Home

Readme

1. 12 PDYNAMICCOVKECHON AA der qui m re ii a E o to ur RN 12 CRETA dd e o cele 12 Upgrade to Windows Visual Studio NET 2003 reiterar ancora ona nana rancia 13 SWICHAO MSTAAS TUS Y MAA eer e ERR ER D I RU Ed eee 13 Support dropped for Windows 98 ssri insiens Ta ee EEEE E EE R E 13 GTAP RICS EEEE de o Om me AA 13 VERSION 2 5 6 15 DECEMBER 2004 cuento enean aeo ep oaa ao epa ia eaa eae o raa eiae nega 13 KNOWN DEFICIENCIES IN VERSION 2 5 6 cccccssccssscessccessecssecessecsssecssscesseceseecsssccssscesseceseecessecsaseesaecesseesseecsaeeess 13 WHAT S NEW IN VERSION 25 0 i ccotieamemiaeetnt em ANON RN ED RIE 13 GAUS file Support added oses deseado A AAA uaa Ede suada toe end 13 Skew t shared with other projects eese tette tnter tenente nennen nennen 13 Fixed b g in levels Codin gs nek in oh T Gah quoad Qe du GEER deae denat 13 VERSION 2 5 4 19 JULY AAA O 13 KNOWN DEFICIENCIES IN VERSION 2 5 4 innne iniii i i i i ii 13 AA E Pe a SN ATA RA SONA 4E 5 rcv A EE E E 14 ARWO WMO message upload eee e te e e e id een 14 VERSION 2 53 11 JULY 2004 scccescccccseccoscssseseseconesscenssacesesssetsansonessdesesuseassatecssacedessdenssacenssasedesacenssasenedadenese 14 KNOWN DEFICIENCIES IN VERSION 2 5 3 ccccccssccssscessccesscessecessccsseecssscesseceseeceseccssscessecessecessecsssceuecesecessecsseeess 14 WHAT S NEW IN VERSION 2 5 3 E E E EA 14 Coded Message ae aeo eee rn into 14 11 15 07 2 of 33 VERSIO
2. 61 knots or greater Previously maximum winds would code for 60 knots or larger Added a forced doubtful heights switch on the Comm tab for TEMPDROP messages If the operator checks this box a 51515 section is forced if it does not already exist and a 10161 group is added to the section The pressure limits for the group span the sounding Added section 7 31313 group to Part A of the message to match coding standards in WMO 306 Supplement 2 Changed the formatting of the 62626 line when saved to a file or transmitted to the ARWO Long 62626 comments must be broken across multiple lines If the break occurs between words in the comments a leading blank is added to the beginning of the next line so that automated decoders can easily detect the word break Modified the computation of the altitude for the WL150 comment in the 62626 group It now takes into account the height differences between the ptu and wind measurements Moved the computation of the max wind level to occur after the standard levels are computed so that the standard levels can be considered for the max wind BatchAspen Added the BatchAspen application This separate program can apply the Aspen Q C processing to a large set of sounding files at one time BatchAspen shares all of its Q C algorithms with Aspen to insure that the processing is identical BatchAspen is an optional component selected during the installation Appendix A of the Aspen User s Man
3. Control 4 a I e DRIN RH ttg 32 PRIN IN O A ANS M MI M E 32 EIA RN 33 WMO Mesas RR EROR RECO RN IER RU e 33 Graphi6s iudi RE REIR ERN REED MERE REC 33 Software Technology o RR E e e e uci 33 11 15 07 5 of 33 Introduction Note Aspen is no longer supported for older versions of Windows It will now only run on Windows XP systems Only versions prior to 2 6 0 can be used on non XP systems Aspen is a suite of programs that are used to analyze radiosonde sounding data Quality control Q C procedures will remove questionable data values apply a limited set of correction algorithms and apply a user controlled amount of smoothing to the data series The Aspen programs perform levels determination and WMO message coding as defined by the FMH 3 handbook amd WMO coding tables Graphical presentation tools provide for convenient browsing and comparison of soundings Three programs comprise the Aspen package e Aspen an interactive MS Windows based Q C program with extensive graphical displays e BatchAspen an interactive MS Windows based program used to apply the Aspen Q C procedures to multiple soundings in a single run e AspenQC a Windows or Linux command line program that can analyze a single sounding The primary documentation is found in the Aspen User Manual which is installed in the Docs subdirectory of the Aspen installation directory by default c Program FilesN CAR Aspen Behind the scenes Aspen performs ext
4. completely object oriented software design which is more resilient to requirements changes and easier to maintain Use of Visual C has led to a significant improvement in processing performance and the presentation of an industry standard user interface 11 15 07 33 of 33
5. is coded in the 77 group was changed to match the WMO 306 specifications Previously the QC data set was used to determine this level Now it is chosen from among the existing significant levels Enlarged the Levels hotspot displays on the XY graph to eliminate text clipping If the sonde position can not be integrated all of the way to the surface the last calculated position is used for the splash location if it is below 850 mb Fixed minor bug in position algorithm that occasionally caused the splash position to not be calculated Version 2 0 1 21 May 1999 Known Deficiencies in Version 2 0 1 The resizing problem noted in Version 2 0 0 has not been fixed A serious problem exists where if the user hits the Enter key while either on the Main tab or the Comms tab the tabs become scrambled The user can close the sounding and reopen it to repeat the QC processing 11 15 07 30 of 33 What s New in Version 2 0 1 The QC tab now removes the old data values before displaying the new results from a recompute operation A bug in standard levels which caused an exception when the QC data is very sparse was fixed QC parameters can be reset to default values from the main file menu without opening a sounding file The number of files open at the same time is limited to 6 to avoid using up Windows resources The equipment type code group a4 changed to 8 for satellite navigation Missing surface pressure is now reporte
6. restarts at 11 rather than 00 for the temperature and wind groups Fixed an error in the position calculation Positions i e latitude and longitude calculated by earlier versions of Avaps Editor are incorrect Fixed a bug where the flight level wind speed and direction could be slightly modified in the Q C data set An extrapolated mandatory level was being created both in section 2 and in section 9 if the sonde was launched within 25 mb below a mandatory level The former has been removed If only flight level winds were available for the entire sounding they were getting coded twice in the 21212 group This has been fixed Changed some level type names in the levels display tab Added adjustment for the time difference between the PTU and wind measurements The time difference is used along with the fall velocity to compute the true height of wind measurements having the same time tag as a PTU measurement This height correction is used only in determination of the surface wind heights and the reported height of the last measured wind in the 62626 group The difference will be at most a few meters Modified the surface wind determination to match Franklin s procedure Surface winds are taken between 10 and 12 meters This height is selected after correction by the adjustment described in the previous paragraph WMO coding fixed so that calm winds are reported as 00000 WMO coding fixed so that north winds have a direct
7. was not being saved after being changed This has been fixed For BatchAspen any configuration option changes are saved immediately and used in the current run of BatchAspen In previous versions BatchA spen had to be stopped and restarted for configuration changes to take effect Version 2 6 4 18 June 2006 Known Deficiencies in Version 2 6 4 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 6 4 Configuration Directories The desktop shortcuts had the wrong working directory and exposed a bug in the way Aspen handled configuration files if they were in the working directory 11 15 07 10 of 33 Version 2 6 3 16 June 2006 Known Deficiencies in Version 2 6 3 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 6 3 Dropsonde Wind Equilibration The user can now set a wind equilibration period for dropsonde winds Winds within this time period after the launch will be discarded This arose because the 53 has started using a GPS re radiation chamber prior to the launch and so the sondes are transmitting winds as soon as they are ejected from the aircraft The fi
8. 2 or RH3 as the RH raw data source but only for AVAPS and MCASS type soundings Version 2 2 1 18 July 2001 Known Deficiencies in Version 2 2 1 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 2 1 Added miscellaneous option allowing the user to disable the generation of the abbreviated header for the TEMPDROP message Added option for setting the time span for position interpolation from the winds Previously this was fixed at 60 seconds and if a wind gap were greater than this the position integration would stop The user can now change the maximum gap width setting in under the miscellaneous options Version 2 2 0 02 May 2001 Known Deficiencies in Version 2 2 0 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 2 0 Temperature time constant and ambient equilibration Replaced the temperature time constant empirical formulation with an explicit calculation The previous version used a time constant that a parameterized function of pressure Two functions were provided based on nominal ascent rates of 5 and 15 m s The new time constant is a function of press
9. 212 group is not coded when the only winds available are from the flight level observation The default file extension for saved TEMP message files is changed to txt An option has been added to cause a NNNN message terminator to be added to the end of TEMP messages This is only done when saving the TEMP message to a file Configuration The system for configuration of QC parameters has been completely reworked Configuration parameters are now managed in an XML file A configuration set is a named collection of QC parameters Multiple sets can be created and used for different processing scenarios e g perhaps tropical storm and winter storm A particular set is designated as the currently active set Be sure to read the Configuration section in the Aspen User Manual 11 15 07 16 of 33 The interface for editing configuration parameters has been consolidated and improved An interface for managing the collection of configuration sets has been created The user can create delete and modify the named configuration sets Hit Surface Surface Altitude Unknown and Ignore Heights were added to the configuration parameters The labels in the Dropsonde RH channel selection were changed to AVAPS selected 1 and 2 Graphics The graphing component was upgraded to ProEssentials V 4 0 A save option was added for X Y and Skew T graphics JPG and PNG files can be created and saved us
10. 62626 group it is not included in the message Version 2 0 4 17 June 1999 Known Deficiencies in Version 2 0 4 The resizing problem noted in Version 2 0 0 has not been fixed What s New in Version 2 0 4 Additional levels are not generated for wind direction when the wind speed is less than 10 knots The GDL limit for wind speed at levels below 850 mb is reduced from 10 kts to 2 5 kts A Save entry was added to the File menu It is enabled only for tabs that support save functions thus currently enabled only for the WMO tab Version 2 0 3 15 June 1999 Known Deficiencies in Version 2 0 3 The resizing problem noted in Version 2 0 0 has not been fixed Additional levels are generated for wind direction when the wind speed is less than 10 kts The GDL limit for winds at pressures greater than 850 mb needs to be reduced from 10 kts to 2 5 kts This is to conform to a coding rule change requested NHC What s New in Version 2 0 3 Aircraft ID is included in the drop description Bug fixed which caused a crash if there was no launch line in the D file Estimated surface pressure are now coded in sections 5 and 6 of Part B of TEMPDROP message 11 15 07 29 of 33 The dynamic pressure adjustment is fixed so that files created under all versions ofthe AVAPS Drop program are processed correctly This is done by removing the dynamic pressure error correction that was recorded in the Sonde Dynamic Errors field in the D fi
11. Aspen Release Notes Charlie Martin Please be sure to read the Introduction and Installation sections ASPEN RELEASE NOTES sesiscscscstsoccsessessenssdccnssoncsoncsoscoscdnssdevessoncoonsoossacssessdusssensseensoossnsstessoncsseesevestoossnsesesecusse 1 NAL rS 6 INSTALLATION p 6 CONFIGURATION A H 7 CONFIGURATION FILES UNDER WINDOWS 98 ccccssscssssecssseessecessecessccssscesseceseecessecssscesscesecessecessecesscessecenseesues 7 CONFIGURATION FILES UNDER WINDOWS N T 2000 XP sees enne nnne ens 7 VERSION A NT 7 KNOWN DEFICIENCIES IN VERSION 2 7 5 ccccccssccssscessscessecessecssecessecsssccssscessecessecessecessccssecesseceseecsssecssscesecesseeenes 7 WHAT S NEW IN VERSION 2 7 5 cccssccssscsssecssscessscesecessccsssccssscessecessecessccssscessecesecessecessecesscessecesecesseessecessecesseesues 8 BUS TAINS M mete hei cats oro oo ato Ae Se ote Sone cet bot cote Dot oc e im cos La AT dde al de dde EL el erem cil 8 VERSION 2 7 4 SEPTEMBER 17520077 siccsscesscssscssacensensaccsacesseasaacnacanseasanssaconsaasaeesdcanseassacdacensessdacsacansssseassacs 8 KNOWN DEFICIENCIES IN VERSION 2 Vid arca 8 WHATS NEW INC VERSION 2 7 dosis aca ro vo sero a a ad aad axis ea avin a WI dns quad 8 BUGFIXES posar sei ceara da aa br a E ae ica a EEE 8 Gonfigurations a ee RED RENE RETE RCE Ee 8 DIE Diaenostics Files s SARA RRR bn nadie e ARRAS AAT Aden Me coq 8 VERSION 2 7 3 SEPTEMBER 1 20077 scsssssssss
12. N 2 5 2 09 JULY 2004 o onocnonocionononnonoononocnoncononcononcononnonoononoononccnoncononcononnonoononcononconon cono ronocronoonon conos 14 KNOWN DEFICIENCIES IN VERSION 2 5 2 cccccsssccssscessscsssccssscessccssscessscesecsseecsssecssscesseceseecsssecsasessaeceseecsseecsaeens 14 WHAT S NEW IN VERSION 2 3 2 olaaa ad 14 Coded Message satin ERA ER RSS RE AO SOR e na eee edes tbe a 14 VERSION 2 5 1 07 JULY 200 y 14 KNOWN DEFICIENCIES IN VERSION 2 5 1 cccccscccssscsssccssscessecessccsssecsssceseecessecsssccssscesseceseecsssecsaseesaeceseecsseecsaeenss 14 WHAT S NEWINVERSION 2 91 553 rris tr ED YO YE GR Y EDU YO TU CE nine diana 14 Coded Message e e t e deste dte eee eed 14 VERSION 2 5 0 16 JUNE 2004 eee crecen eee eere eee n eene tn eene tne tn sense neta eene en sense nean eene en eene en eene en eene en eta 15 KNOWN DEFICIENCIES IN VERSION 2 5 0 ccccccscccssscessccessccssscessecessecssscessecessecessecesscesseceseecesscessseeuecesecesseceseeess 15 WHAT S NEW IN VERSION 2 5 0 oc ccssscsssccssscessecessccssscessscesseceseecsssecsuscessecessecessecessecesscessecesseceasesaecessecesseceseeess 15 aplash Time ca ioc ae soba a tios 15 AMDICN EE QUINIDI GION a a etm a utut M 15 DUminary Jab E Fes coos An EUER RR UU COUPE 15 Abreviated Headers for Upsondes sese t rene trnetennetne tenent ntes 15 Emailing WMO Messagesc s I ERR e PES 15 VERSION 2 43 12 JANUARY 2004 eterno eon acne 16 KNOWN DEFICIENCIES IN VERSI
13. ON 2 4 3 ccccccssccssscessccssscessecessccsssecssscessecessecsssecssscessecessecessecsascesaecessecsseecsaeenss 16 WHAT S NEW IN VERSION 2 43 aii Va e paier P E OR Dr dva d 16 Levels Processing and Message Coding seen nennen nnns 16 Configuration i i tot ee techd ces coti temi toe m e e e e e A e einen dee a 16 Graphi6s is teat eot tt tete tee ete mee ee te t d ea E dee ten ee ete nam 17 Miscellaneous scito Hee de Ee E unb delete t Doth loll dv gras Votes E D aureus Tory ae ru et 17 Bath ASPEN sto tton tet ed trei tendi em eate Ri d ead ed ved tend te dete 18 Aspen QC zii scenam ate ned ed e eU HAE GHEE emt ee d eo e tee tente ent 18 VERSIONS 22 3 AND 2 3 X AAA A iu Se pua Ese en Pee Saba ER De pa Un Ge eae aeu a ida Papas a Re e Te PRESE s 18 VERSION 2 2 2 26 OCTOBER 2001 onec keen ae io eaae one eani n e eaa inue na eina een oin eaae gen epa uan 18 KNOWN DEFICIENCIES IN VERSION 2 2 2 ccccccscccssscessccssecssscessccsssecssscessecsseecessecsascessecessecsssecsusceaeceseeesseecsaeens 18 WHAT S NEW IN VERSION 22 2 ui a dei itecto 19 VERSION 2 2 1 18 JULY 2001 densas 19 KNOWN DEFICIENCIES IN VERSION 2 2 1 75 5 5 55 38 rra OH OHO A ae 19 WHAT S NEW IN VERSION Z 2 iia aaa 19 VERSION 2 2 0 02 MAY 2001 scccsesscssesesecencsssexesesenssasssesnsonesssecesasenessaesessesnssseonsonssaseseonsenasnssssodesasenesaaetenasenese 19 KNOWN DEFICIENCIES IN VERSION 2 2 0 ccccccscccssscessccssscessscessecsssc
14. PEGraph dependencies removed from the skew t code Fixed bug in levels coding For upsondes if there is no wind data throughout flight Aspen would crash when coding the levels This has been fixed Version 2 5 4 19 July 2004 Known Deficiencies in Version 2 5 4 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed 11 15 07 13 of 33 What s New in Version 2 5 4 ARWO WMO message upload The temporary directory used to hold the WMO message during upload to the ARWO on the WC130J aircraft previously had been set to C Under Windows XP this directory is not writable by non administrative users Aspen was modified to use a system provided temporary file directory path Version 2 5 3 11 July 2004 Known Deficiencies in Version 2 5 3 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 5 3 Coded Message Added standard pressure level for 150 mb All these years no one has noticed this missing level Also fixed the coding of missing wind groups for 200mb and 100mb levels if the levels below them have winds See WMO 306 code table 1734 Version 2 5 2 09 July 2004 Known Defi
15. S NEW IN VERSION 2 1 3 ccccccccccsessccssscessccessccsssccssscessecsssccsssecssscessecesseceseecessecssscessecessecesseenaecessecesseeestesss 24 VERSION 2 12 27 OCTOBER 1999 aara E eor osses rar S AE EE EE aS Eo E ES S AS Ea EE S Si 25 KNOWN DEFICIENCIES IN VERSION 2 1 2 coccccccccccccscsssccsssssccssssscsssssscssssscsssssscsssssscessssscessssscesssssceesssscessssseesaess 25 WHAT S NEW IN VERSION ld ads 23 VERSION 2 16 23 SEPTEMBER 1999 csscccssssssonsensosssesonsenssavsnsaesenssasstoonsacebavssedaedveodseteonsensoavensaesensonsesedeses 25 KNOWN DEFICIENCIES IN VERSION 2 1 1 ccccccccssscsssscssscessscessccsssccssscessecessecsssecssscesseceseecessecsusceseecesseceseecsseeess 25 WHXAT S NEW IN VERSION Zlatan A ds 26 VERSION 2 1 0 10 SEPTEMBER 1999 vsccccscatsncsnsstscstscencstecntecsensstsentsacencstennssasenesssentencencsteenteasensstoentenscuese 26 KNOWN DEFICIENCIES IN VERSION 2 1 0 esses eene eene ener entere eene nens enne eene etre ense 26 WHAT S NEWAN VERSION 2 1 Dia 26 VERSION 2 0 8 6 AUGUST 1999 csssssscsscessanssacsssessanssarsecessanssncsboessanssassesonsassoncanssassdssasansdassasoscsbeessansensseese 27 KNOWN DEFICIENCIES IN VERSION 2 0 8 cccccsscsssscsssccssscessscessccsssecssccessscessecsseessssceseeceseecessecsaseeaecessecsseeesaeenss 27 WHAT S NEW IN VERSION 220 85 toe rt a ER EREN 27 VERSION 2 0 7 30 JULY 1990 ieceeeessereeuee so eaae eoa eo ena idad T Eoo o i is 27 KNOWN DEFICIENCIES IN VERSION 2 0 7 wo
16. alculations can now be specified in the configuration This capability was added at the request of the National Hurricane Center but it should be used with caution since changes may violate the specifications ofthe FMH 3 Levels can now be edited where the user can mark levels that should not be coded The WMO message will be recoded without the designated levels Tropopause detection has been fixed for levels generation Previous code was not iterating over the complete tropopause candidate region A bug was fixed which sometimes caused the highest data point to be labeled as a tropopause User configuration of the levels departure limit for determining GDL levels has been added The threshold can be set for temperature relative humidity wind speed and wind direction Note that improper use of this can cause the levels determination to be out of specification with the FMH 3 A separate smoothing step for temperature has been added solely for the purpose of tropopause determination The final Q C d temperature data is now smoothed before the tropopause is calculated If this is not done small features in the temperature trace would cause tropopauses to be identified when they are nota gross feature of the sounding A configuration item tropopause smoothing wavelength was added to allow the user to control the amount of smoothing A rounding problem in latitude and longitude that caused Marsden square coding errors has been fixed The 21
17. ave been addressed The user may now edit the 61616 group parameters without causing other edits to the message from being lost Code groups are edited individually so that inadvertent changes to adjacent groups are minimized Graphics Significant improvements have been made to the two graphical displays Skew T This product has been rewritten so that when the display limits of the skew t graph are changed the reference lines e g adiatbats and isotherms are redrawn and relabeled In version 1 when the user zoomed the area within the skew t the reference line labeling was lost The zoom area is selected with the mouse pointer XY Graph The most significant change to the XY graph is the ability to now overlay the analyzed levels on the graph Hot spot capability causes the level type name and pressure to pop up on the display when the user positions the mouse pointer over a level symbol on the graph A graph of the pressure fall velocity versus the GPS measured fall velocity has been added Software Technology Version 1 of Avaps Editor was built on a combination of Fortran Visual Basic and Visual C This conglomeration of technologies led to a software package which had become increasingly difficult to maintain and which had performance penalties due to the Fortran and Basic code Version 2 is based completely on Visual C building upon the Microsoft Foundation Class application framework This approach has allowed for a
18. cccccccscsccsssssccsssssccssssscsssssscsssssscsssssscsssssscessssscsesssscessssscessssscessssscesaass 27 WHAT S NEW IN VERSION 2 0 7 cocccccsssssssecssscessecessecssscessscesecessecsssecsuscessecesecessecessccssscesseceasecesscesecesseceseeeeseeens 27 VERSION2 0 6 15 JULY 1099 nente oen aetas nonna oben sa SENA Dens e aee en paseos ea en nine so ausos kane cn aon agen 28 KNOWN DEFICIENCIES IN VERSION 2 0 6 wocccccccccsccessssccessssccsssscsesssscsssssscsesssscessssscecsssscssessscessssscesssssceessssesaeas 28 WEAT S NEW IN VERSION 20 6 re ERU TORTE NW VU YO EVER EA E E YER FREU FREE 28 VERSION 2 0 5 21 JUNE 1990 csccsccssccnsexsssetesssetesnsonconteasoseossonssessucsasoutenssanstesacenesasssesacenesasedesdsenesessnedeteness 29 KNOWN DEFICIENCIES IN VERSION 2 0 5 wocccccccscsccessssccsssssccessssccssssscsssssscsssssscsssssscsssssscsesssscessssseesessscesssseesaeas 29 WHAT S NEW IN VERSION 2 0 5 c ccssssessecssscessecescecesscessscessecessecsssecsuscessecessecessecessecssecessecessecesscessecesseeesseeeseeess 29 OS UNPAID AA O AAN 29 KNOWN DEFICIENCIES IN VERSION 2 0 4 wccccccccsccessssccessssccssssscsssssscsssssscsesssscsssssscessssscesesssccssssscsesssscesssseeseaeas 29 W HATSS NEWIN VERSION 2 0 2L ener re terre certe sa sot a RO RERO caidas E EE eve eR asa tla 29 VERSION 2 0 3 15 JUNE 1999 cscsscsscsscsscssssssccsccsccsccscssccsacsecsessassessessassassessessessassassassassassassassessassaseases 29 KNOWN DEFICIENCIES IN VERSION 2 0 3 vccccccc
19. ciencies in Version 2 5 2 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 5 2 Coded Message Fixed coding of standard pressures in Part C These are coded as mb rather than tens of mb as is done in Part A Version 2 5 1 07 July 2004 Known Deficiencies in Version 2 5 1 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 5 1 Coded Message Pressure coding for parts C and D was fixed The fine print in the WMO 306 see note for PPP specifies that the pressure in these parts is reported in tenths of a mb Thanks to Paul Cieselski of CSU for detecting this problem 11 15 07 14 of 33 Version 2 5 0 16 June 2004 Known Deficiencies in Version 2 5 0 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed AspenQC does not link under Solaris It will no longer be supported for Solaris What s New in Version 2 5 0 Splash Time The splash time for dropsondes has been added to the 62626 group of the TEMPDROP sect
20. cssscessecessecessecesscessecessecessccssseenseceseeeessecsateess 19 WHAT S NEW IN VERSION 2 2 0 c ccscccessccssscessecessecsssccssscessecessecessecssscessecesecessecessecesecessecessecesscensecessecesseeesteess 19 Temperature time constant and ambient equilibration seseeeeeeeenenees 19 WMO MESSE coding eere ERR RD OO Oen 20 Date Aspen tunt et RR ERR HR RR RO RERO e qu 20 Miscellaneous seus dota oM tet ee RS SES ML M IE LM e aa A M M A ES A 20 VERSION32 1 9 T7 AUGUS T2000 scsicsscccsnccsscncsasencsssenssiosescscendencsadedsotecnssnsesccnssadaucsatesesasdncdasanesaduncedsaassasanede 21 KNOWN DEFICIENCIES IN VERSION 2 1 9 vosccccccecestcscesccseacavscseesosstsesncoensascasostcocbsnsestcosesesndasesssosvsessensoscse esaesns 21 WHAT S NEWIN VERSION 2 li n I oro proi on PO p rented doa 21 VERSION 2 1 8 28 JUNE 2000 siccssceiscsssncsscstsenssassncessanssnsaeessscssasdeosdeossonsescdbenssensbnssteansonsdasdsosnsensdasaseassansoands 21 KNOWN DEFICIENCIES IN VERSION 2 1 8 ccccccssccssscsssccssscessscessecsssecssscesseceseecessecssscessecessecessecsascesasceseeceseeceseees 21 WHAT S NEW IN VERSION Zi TXO EO EV T XE E FR EH aerated 22 11 15 07 3 of 33 VERSION 2 1 7 8 JUNE 2000 csssssscssssssssssssssssssssssssssssccsssssssssssssssssssssssssssccsssssssssssessssssssssssssssssssssssssssssssesssssss 22 KNOWN DEFICIENCIES IN VERSION 2 1 7 cccccscccssscessccssscessscessccsssecsescesseceseecsseecsasceseecessecsssecsaseeaecessec
21. d regardless of the whether the previous operation was a file open or a data product save This is a documented bug or feature in the more recent Windows versions Aspen now will open the file chooser in the directory where the previous open took place for each type of file access activity 11 15 07 17 of 33 Added a standalone AspenQC program which can be run from the command line under Windows and Linux File input and output is via standard input or from named files Added support for the comma separated variable CSV file format This format allows direct import and export between Aspen and MS Excel as well as providing a reasonable generic format for arbitrary data sets Modified the default file naming convention for output files to match the typical windows usage where the file name extension identifies the type of data in the file NetCDF Class JPG and PNG files now get the extensions nc cls jpg and png respectively Made significant additions to the user manual especially concerning the QC parameters and configuration management Set the Most Recently Used file number limit to 16 since windows didn t seem able to handle more than this Added launch time to the Main tab display PgUp and PgDn buttons will now cause the Raw and QC tabular displays to scroll up or down Scrollbars fixed so that views can be scrolled when sounding windows are made smaller than the main frame BatchAspen Added csv
22. d as three solidii instead of five solidii The Tab dialogs were expanded to make full use of the tab areas A sounding description box was added to the Comm tab Implemented the 62626 group in WMO message and added controls for its configuration on the Comm tab Fixed field width formatting was applied to 61616 group coding Version 2 0 0 17 May 1999 Known Deficiencies in Version 2 0 0 The resizing capabilities within the Multiple Document Interface have not been enabled When a user resizes one of the windows containing a particular sounding the contents of the window will be clipped Occasionally when the window is maximized again 1t will not fill the entire area correctly If the user simply iconifies that window and maximizes it again it should return properly to full size This problem appears to occur sometimes after print previewing as well The cause of the resizing problem stems from a defective third party control that provides window resizing capabilities for Visual C applications We are working with the manufacturer to resolve the issue The recently introduced specification for the 62626 code group in the WMO TEMPDROP section 10 has not yet been implemented Development of this capability is currently in progress What s New in Version 2 0 0 This is the first release of Avaps Editor Version 2 This version contains many changes and enhancements over Avaps Editor Version 1 The major changes are summarized be
23. d when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 4 The 1000mb height will be extrapolated if the surface pressure is greater than or equal to 949 5mb and less than 1000 mb as per instructions from Scott Persinger the upper limit used to be 950 0 mb Added Zmodem protocol for transfer of TEMP message to the ARWO for WC130J aircraft Enhanced the editing procedures on the WMO tab The original count of code groups is displayed along with the number of modified groups The number of modified groups is the sum of groups inserted deleted and modified Groups that are inserted are highlighted in green Groups that are modified are highlighted in red A Restore button can be pressed to restore a modified group to its original value Bug fixed where surface wind altitudes of 12m were being coded into the 62626 group Bug fixed where edits to the abbreviated header 61616 and 62626 groups are preserved when switching between the WMO and Comm tabs If fields on the Comm tab that affect these groups are changed the edits are lost Fixed a bug where the surface altitude was being initialized from the registry rather than the value specified in the sounding file Version 2 1 3 23 Nov 1999 Known Deficiencies in Version 2 1 3 The resizing problem noted in Version 2 0 0 has not be
24. d with pdf files 11 15 07 6 of 33 Configuration Configuration is perhaps the trickiest aspect of using Aspen The Aspen configuration scheme uses XML files aspen xml and aspen dtd to maintain configuration information These files are kept in different directories depending on the version of Windows that Aspen is installed on In all cases the ASPENCONFIG environment variable can be set to specify a custom location where the files are located However this variable is not used during the installation process the user must set this variable and copy the files into that directory if desired Configuration files under Windows 98 Versions of Aspen prior to V2 6 0 can be installed on Windows 98 The aspen xml and aspen dtd configuration files are installed into the main Aspen program directory typically c Program Files NCAR Aspen The environment variable ASPENCONFIG is set to this directory and an entry is placed in autoexec bat to set ASPENCONFIG This variable is also set in the environment section of the Windows 98 registry aspen xml and aspen dtd can be edited directly by the user Configuration files under Windows NT 2000 XP Since there may be multiple users on an NT 2000 XP machine there needs to be copies of the configuration files for each user The following scheme handles this situation When Aspen is started it will check the following three locations in this order for existing aspen xml and aspen dtd files c D
25. ed during the install process Changed from the InstallShield to the Wise installer The user will see very little difference in the installation procedure Version 2 1 9 17 August 2000 Known Deficiencies in Version 2 1 9 The resizing problem noted in Version 2 0 0 has not been fixed Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 9 Added capability to process MCASS data files These are observations made by the specialized NCAR sounding system which uses a dropsonde lifted by a balloon The data files are typically quite large and users will want to set the QC filtering and final smoothing wavelengths to much larger values e g 60s than the typical default values Be sure to set the nominal ascent rate to 5 m s Dynamic correction for temperature and winds levels calculation and TEMP message encoding should usually be disabled as well for MCASS observations Version 2 1 8 28 June 2000 Known Deficiencies in Version 2 1 8 The resizing problem noted in Version 2 0 0 has not been fixed Successively processing many files 30 during one run of Avaps Editor can cause the g
26. eed and direction are not available for editing on the main tab Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 5 Fixed protocol specification of Zmodem TEMP message transfer to ARWO This was tested January 7 2000 on WC130J 5301 Double clicking a code group on the WMO tab opens the modify dialog The original group count and the modified group count are printed on the first page of the printed WMO pages Move the AEV string in the 62626 message so that it appears before REXMIT OF OB CORRECTED RPT and LAST REPORT TO It will be placed after all of the other codes in the 62626 line Version 2 1 4 5 Jan 2000 Known Deficiencies in Version 2 1 4 The resizing problem noted in Version 2 0 0 has not been fixed 11 15 07 23 of 33 Long messages in the 62626 group do not line wrap Launch wind speed and direction are not available for editing on the main tab Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem Surface winds are not compute
27. en fixed Long messages in the 62626 group do not line wrap Launch wind speed and direction are not available for editing on the main tab Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 3 Fixed bug where the surface wind speed and direction were being reversed for GLASS soundings Fixed bug which caused program to crash in the vertical velocity check if there were no launch winds and no sonde winds 11 15 07 24 of 33 Version 2 1 2 27 October 1999 Known Deficiencies in Version 2 1 2 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Launch wind speed and direction are not available for editing on the main tab Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 2 Added bu
28. ensive data manipulations Users should carefully read the user manual The bulk of this ReadMe document contains a sequential listing of modifications made to successive versions of the Aspen software package Significant changes in program functionality and usage are described here It is important to read the applicable section when installing a new version of Aspen Installation Installation of Aspen is trivial Simply run the self installing msi file or the exe file for pre V2 6 0 versions of Aspen The Aspen files will be written to the default directory c Program Files NCAR Aspen It is recommended to use the default installation location Any user can install Aspen under Windows98 and Windows2000 For versions prior to V2 6 0 administrator privileges are required to install Aspen on Windows XP Icons for Aspen and BatchAspen will be created on the desktop and added to the Start menu Sample data files are located in the Sample Data subdirectory Documentation will be found in the Docs subdirectory The ASPENPROG environment variable will be set to point to the directory containing the Aspen executable files Aspen uses ASPENPROG to locate online documents and default configuration files ASPENPROG should not be altered The Help menu item in Aspen and BatchAspen allow the user to display this ReadMe document and the Aspen User Manual For this to work properly the system must have the Adobe Acrobat Reader installed and associate
29. file output option Added a menu bar Added configuration set selection editing and management Rearranged user interface layout Fixed directory name configuration so that it is saved between runs Added configuration items for output directory locations AspenQC Added capability to read data from standard input Versions 2 2 3 and 2 3 x Internal releases often changing Not for public distribution Various changes added incrementally and released to selected users Version 2 2 2 26 October 2001 Known Deficiencies in Version 2 2 2 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed 11 15 07 18 of 33 What s New in Version 2 2 2 Extensive changes were made to the source code so that the core Q C routines could be built without MFC dependencies so that the code could be used on Unix platforms Fixed missing value bad value indicators and units definitions in the netCDF files Fixed bug which caused a crash in the levels determination of surface winds for upsondes when make altitudes missing was selected Added units to labels on the main tab Expanded the limits of the RH trace on the XY graph to 1 to 101 so that it is easier to discern between missing RH values and 100 or 0 RH values Added option for operator to choose between RH1 RH
30. gest system The recipient address is provided by a new configuration option TempEmailAddress A button is located on the WMO tab which is used to initiate the email When the button is pressed an email window will popup with the TEMP message The user can activate or cancel the email send from here and also edit the recipients and message if necessary The email capability uses the default mail client e g Outlook or Outlook Express It is recommended that recipient address be an alias from the mail client address book The mail client should also be configured to send plain text messages and automatic line wrapping should be set to the maximum value This feature has only been tested using Outlook Express as the mail client 11 15 07 15 of 33 Version 2 4 3 12 January 2004 Note the interface for configuration of OC parameters has changed significantly with this release Be sure to read the Configuration section of these release notes and the Configuration section in the Aspen User Manual Known Deficiencies in Version 2 4 3 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed AspenQC does not link under Solaris Sorting out the library specifications might fix this What s New in Version 2 4 3 Levels Processing and Message Coding The threshold limits for GDL c
31. gnate whether or not the sounding reached the surface The user can elect to not make use of the calculated altitudes After the processing parameters are changed the user presses a RECOMPUTE button to reprocess the sounding using the new parameters Printing The standard Windows printing and print preview interface has been implemented for all text based data presentations This provides the standard preview capability which allows the user to select particular pages to be printed The standard Windows printer configuration scheme will be familiar to Windows users 11 15 07 32 of 33 Levels Coding The levels coding algorithms have been modularized and separated from the WMO coding sections of Avaps Editor This will make the software more adaptable to changes and easier to maintain A Levels tab has been added to the main display This provides a listing of the analyzed levels with their relevant data parameters Standard levels are highlighted and the list can be sorted by any parameter such as level type time or pressure This display will be very useful in examining the source level that led to the creation of a particular WMO code group WMO Message WMO message coding is as a result of its definition very hierarchical in nature Thus the message coding software was reformulated as a class library with a structure that mirrors the rules defined in the WMO coding manuals Deficiencies in the WMO message editing h
32. he Subversion repository This allows for more flexible and comprehensive revision control The current source code revision number now appears in the Help gt About menu item Version 2 6 0 21 June 2005 Known Deficiencies in Version 2 6 0 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 6 0 Configuration files When new configuration parameters are added to later versions of Aspen the program will automatically add them to a user s existing aspen xml configuration file Thus new parameters can be added to Aspen without requiring the existing configuration file to be discarded and replaced by a newer version Dynamic correction The smoothing wavelength for dynamic corrections for tdry and winds are now user settable instead of using the final smoothing wavelength This was in response to significant variance being added as a result of the dynamic correction when the final smoothing wavelength was small typical CRC rejection Dropsonde data frames which have a CRC error noted in the status field are now rejected by default The configuration parameter DiscardBadCrcData was added to the Other Options tab of the configuration dialog 11 15 07 12 of 33 Upgrade to Windows Visual Studio NET 2003 The compiler technology was upgraded f
33. ing the save buttons or file menu commands A plot width options for graphic file output was added Plot widths are specified in pixels Vertical scrolling on zoomed plots has been enabled Bug fixed if levels computation was turned off and the sounding recomputed the old out of date levels were being plotted This no longer happens Initial XY plot display is now QC thermodynamic data pressure axis levels enabled with the XY grid Miscellaneous The source code was upgraded to properly use the standard C library with the correct namespace syntax The netCDF library was upgraded to version 3 5 1 of The Apache xerces c XML library was upgraded to version 2 3 0 of Help topics can now display the Release Notes and the Aspen User Manual The units definitions in the NetCDF file output were made compatible with Unidata dunits conventions Some memory reference problems detected by Insure were corrected Fixed bugs in some of the file decoders Corrected the logic relating to the Unix timestamp and launch times The launch time is now treated as being in GMT throughout the program Output data filenames get a file root name derived from the root name of the input file with RAW or QC appended The default location for directories when opening sounding files and saving data products was fixed In some versions of Windows e g NT 2000 and XP the default directory for any file chooser dialog would be the last directory accesse
34. ion 10 Ambient Equilibration When dropsondes are released from an aircraft they must respond to a sudden change in environment The temperature pressure and RH data are discarded during this period of equilibration The length of this period is a multiple of the sensor time constant Previous versions of Aspen used a fixed number time constants A new scheme has been introduced which dynamically calculates the number of time constants required to reach a given accuracy This will allow for significantly better data recovery at the top of low level drop soundings The number of time constants required is based upon the difference in temperature between the outside of the aircraft and the temperature measured by the sonde prior to launch and uses the exponential response to a step function to determine the appropriate number of time constants Summary Tab An additional tab has been added to the main display This Summary tab displays information about the processing Abreviated Headers for Upsondes Upsondes now have abbreviated headers coded for them Two new configuration parameters UpsondeAbrHdr and UpsondeICAO are used to specify the abbreviated header code and the ICAO code for upsonde TEMP TEMP SHIP and TEMP MOBIL messages Emailing WMO Messages The capability to email the WMO message has been added This may be useful for real time data delivery situations such as submission to the GTS via the NWS email data in
35. ion reported as 360 rather than 0 Transmit time in the abbreviated header has been changed from the sounding launch time to the time that the data file is opened plus 2 minutes Downward height integration corrected so that the same result is obtained whether or not the surface hit is selected Version 2 0 6 15 July 1999 Known Deficiencies in Version 2 0 6 The resizing problem noted in Version 2 0 0 has not been fixed What s New in Version 2 0 6 Bounds checking is fixed for the correction number observation number mission id eyewall azimuth and retransmission number on the COMMS tab Added the sonde serial number to the description text which appears on all graphics and text products Added forced line breaks at WMO 21212 31313 and 51515 code groups Added PRINT and SAVE buttons to the WMO tab 11 15 07 28 of 33 Version 2 0 5 21 June 1999 Known Deficiencies in Version 2 0 5 The resizing problem noted in Version 2 0 0 has not been fixed What s New in Version 2 0 5 WMO message is now formatted in 11 columns instead of 12 The ADDS system is not able to handle lines wider than 11 columns The README is now also distributed in a txt file that can be opened by Wordpad The blank line following each part of the WMO message has been removed Changed mean boundary layer wind speed units in 62626 group to be reported in knots as per the instruction manual for HAPS Editsonde If there is no data for the
36. is 11 KNOWN DEFICIENCIES IN VERSION 2 6 2 ccccscccssscessccssscessecessccsssecssscesseceseecsssecssscesaecessecsssecsaseeseeceseeesseecsaeenss 11 WHAT S NEWIN VERSION 20 2 oa 11 EURO FMA S sca poet nee ta ob atlas EAR LAE dodo ta E cda alk sok ah ek da MEL dll LM Rer BL ele JM aa E a 11 VERSION 2 6 L 24 MAY 2006 ciscssssesssssesssncessanssnsansesconsesssecosoansonssnsensansontosesacsas econsacoscsssass assasenssesessansonsseese 11 KNOWN DEFICIENCIES IN VERSION 2 6 1 ccccccscccssscsssccsssccssscessccsssccssscesecessecssecessscessecessecessecssscessecesseeeseeesseeess 11 WHAT S NEW IN VERSION 2 6 Lui bt 11 Observed DositlOns oa 11 GPS altitude added to output files sese netten nnns 11 Latitude and longitude choice e tddi dd 12 WMO Message sui iio eti etes dd Toa dons 12 EUCEOTMI S EAN AA A E AE A A A ee dai 12 ASPEN A RAR 12 PENCE TAPAS CTL AY RRR RENE ca E TE e du DN eu D ote SE TE a CO SG ONE O TR TES CAE SE TE Da ON oL DOLOS OON TEESE DOE E A 12 VERSION 2 6 0 21 JUNE 2005 essssssssesssssosscscsssosoesosososocscsssosocsosesosocscsssosoescossosocscsssososscsssosocscsssosoesesssosossess 12 KNOWN DEFICIENCIES IN VERSION 2 6 0 cccccscccssscsssccessccssscessccsssccssscessecesseceseccssscessecessecesscessseesecesseceseecsseeees 12 WHAT S NEW IN VERSION 2 6 0 o ccsscssssccssscessecessecesscessscessecessecssecessecessecessecessecessecsuscessecesseceascensecessecesseeeseeess 12 Configuration MES a A A IS
37. l is being created which doesn t have a time field Detect failed spline fits in dynamic adjustments and vertical velocity calculations and produce error messages Version 2 7 4 September 17 2007 Known Deficiencies in Version 2 7 4 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 7 4 Bug Fixes The detrending in the Buddy Check introduced in V2 7 3 was not working This has been corrected Configurations The sample configuration set in the distributed aspen xml file has been updated to specify the Editsonde configuration parameters as default values An editsonde configuration set has also been created which also has the same parameters Users should delete their exisiting aspen xml file so that the new one will replace it Aspen will do this when it discovers that aspen xml is missing Be sure to write down any existing configurations and restore to the new configuration after it has been created by Aspen O C Diagnostics File Text diagnostic output from the Q C processing can now be saved to a file Data points removed by each of the Q C algorithms are tabulated The diagnostic output is enabled by a new configuration option on the configuration Other tab The output file is located in either the directory that Aspen is ins
38. le and then applying the correct value of 0 4 mb Analysis of D files that have the incorrect 1 5 mb dynamic pressure error will not have a surface pressure that is 1 1 mb lower than that reported in Avaps Editor Versions 2 0 2 and earlier The TEMPDROP message formatting has been changed in order to minimize the total number of lines used by a message Line breaks are no longer inserted between sections The enter key problem has been fixed Hitting the enter key no longer causes the tabs to get scrambled The Mission Id field on the Comm tab has been fixed so that it is saved between runs This matches the behavior of the Mission storm field Version 2 0 2 26 May 1999 Known Deficiencies in Version 2 0 2 The resizing problem noted in Version 2 0 0 has not been fixed The Enter key problem from Version 2 0 1 has not been fixed It has been identified as a bug in the third party index tab control and a bug report has been sent to the manufacturer What s New in Version 2 0 2 Overriding the launch pressure was causing the levels to get mixed up This has been fixed The ShowFocusRect property of the tab control has been set to false This removes the unnecessary dashed rectangle that appeared around the text of the selected tab The Lowest Winds level was being incorrectly labeled in the Levels tab as Highest Winds The label has been corrected Level detection algorithm for the maximum winds which
39. low Performance The processing speed is roughly 5 to 10 times faster than version 1 This is due mainly to the use of optimized C source code and design modifications to the processing algorithms User Interface The user interface is based on the standard Microsoft Multiple Document Interface MDI This interface allows multiple soundings to be opened and processed concurrently within the editor This makes it very 11 15 07 31 of 33 convenient to compare multiple drops The MDI will be familiar to users of common Windows based software for instance it is the interface found in applications such as Microsoft Word and Excel OC Algorithms The quality control algorithms are based on a different strategy In version 1 the raw sounding data was structured into an array of time slices with missing data indicators entered for parameters if they were missing at a given time step This array was then analyzed with data quality metrics assigned to each data point In some cases parameters are interpolated across missing data gaps This scheme could allow the user to manually manipulate the quality metrics and thus subjectively influence the inclusion of any data parameter at any time Note however that this subjective editing capability was not made available to the user in version 1 In version 2 the approach is to start with the time series of each raw data parameter A battery of quality control tests is applied to the time series a
40. med in previous versions This places it before the Tdry dynamic adjustment and the RH lower limit step Fixed surface winds determination to take into account the altitude of the surface Fixed wind barbs on skew t plot to report in knots rather than mps The observation number on the COMMS tab is initialized to blank If the user does not enter an observation number it will be reported as 01 MXWNDBND choice was added to the environment drop down list on the Comm tab If winds are only reported for the launch observation they are not processed Fixed bug where duplicate levels were being coded in XXBB A checkbox was added to the Main tab to indicate that the surface altitude is not known This should be checked when a dropsonde is dropped over land It prevents the upward height integration from being performed and causes the heights to be taken from the downward integration 11 15 07 26 of 33 Version 2 0 8 6 August 1999 Known Deficiencies in Version 2 0 8 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Flight level wind speed and direction are not available for editing on the main tab What s New in Version 2 0 8 The skewT graph was changed to plot data as a line rather than as points The file chooser is opened immediately when Avaps Editor is started This behavior is configurable via the Tools gt Other Options menu Missing surface pressure is
41. n the Levels plot on the XY graph 11 15 07 9 of 33 Fixed Launch Wind Speed and Launch Wind Direction Overrides These were not working correctly in previous version The U and V time series were not being updated with user specified values if only one of wind speed or wind direction were specified Designated Data Source and Destination Directories A fixed data source and destination directory can be specified so that the file selector for opening files always starts in a specified directory and saved products are saved in the same fixed location This is enabled by setting the FixedSrcEnabled configuration option to true and setting the FixedSrcDir option to the desired directory Both of these options can be set on the configuration other options dialog tab TEMP Message Emailing The email address for TEMP messages was being forced to uppercase It can now be entered in mixed case Version 2 6 5 31 July 2006 Known Deficiencies in Version 2 6 5 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 6 5 Backed out recent changes to launch altitude for AVAPS and GAUS formats so that launch altitude returns to being taken from the reported geopotential altitude rather than the reported GPS altitude Bug Fixes The DiscardBadCRCData Q C option
42. nch altitude override Previously setting this override did not affect the downward height integration For a dropsonde Ifa mandatory level is created within 2mb below the flight level but winds are not coded for the level use the flight level winds in that mandatory level Version 2 1 6 11 Feb 2000 Known Deficiencies in Version 2 1 6 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem 11 15 07 22 of 33 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 6 Added TEMP messages TEMP TEMP SHIP and TEMP MOBILE Status bar is updated more frequently during processing and displays more detail Added launch parameter overrides for wind speed and wind direction Bug fixed in surface altitude specification Bug fixed in Class file read Increased limits for filter and smoothing wavelengths Changed program name to Aspen Version 2 1 5 8 Jan 2000 Known Deficiencies in Version 2 1 5 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Launch wind sp
43. nd data points that fail to pass are simply removed from the time series The final smoothing step will replace the acceptable raw data points with their smoothed values Thus at the end of the quality control processing data values only exist at points where an original observation was found in the raw data set The estimation of the surface pressure has been improved Version 1 assumed that the last pressure reading of the sounding was the surface pressure James Franklin s analysis of the sonde telemetry has been utilized to estimate a more accurate surface pressure which will provide improved surface pressure and height reports Note that this can cause discrepancies on the order of 10m between the heights for a sounding analyzed by both versions 1 and 2 Algorithms to perform dynamic corrections for temperature and wind speed have been added OC Configuration and Control User specification of the quality control parameters has been implemented A set of property pages allows the user to change the limits that are enforced by the various quality control algorithms The Ooyama filtering and interpolation scheme was studied and implemented as a stand alone class library It is used extensively throughout Avaps Editor Version 2 Several important user controls have been provided in Version 2 e The observed aircraft flight level data can be overridden as necessary The end of the drop time can be specified by the user e The user can desi
44. now coded correctly in the thermodynamic significant levels A bug in the coding of dew point depressions has been fixed Earlier versions had an error in the rounding of dew point depressions greater than 5 C and in the coding of dew point depressions between 5 C and 6 SE A terminating character has been added to each WMO part A custom WMO abbreviated header code can be specified on the Comm tab It will remain as the default value until cleared A custom ICAO identifier can be specified in the ICAO drop down list on the Comm tab It will be saved as a choice for future runs of the editor Fixed a bug where blank lines were being added to WMO message when it was saved to disk Version 2 0 7 30 July 1999 Known Deficiencies in Version 2 0 7 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Flight level wind speed and direction are not available for editing on the main tab What s New in Version 2 0 7 Added additional wind QC step where winds are discarded if the GPS reported vertical velocity is significantly different than the hydrostatically computed vertical velocity Added option to save Raw and QC data in netCDF files Increased the number of segments in the skew t adiabatic and pseudo adiabatic curves to give them a smoother appearance 11 15 07 27 of 33 Fixed problem in coding of nn group in the XXBB part of the TEMP message nn now
45. ocuments and Settings lt user gt Application Data Aspen The directory specified by the ASPENCONFIG environment variable The working directory that Aspen is being run from If aspen xml and aspen dtd cannot be located in any of these places Aspen will offer to copy default configuration files first to ASPENCONFIG directory if ASPENCONFIG is defined or to c Documents and Settingsi lt user gt Application Data Aspen The user can make copies of aspen xml and aspen dtd if they wish to backup their existing Aspen configuration The advanced button on the System menu of the Control panel is used to access the environment variables under Windows NT 2000 XP The ASPENCONFIG environment variable can be set here if the default configuration directory choice is not suitable Note that the directory c Documents and Settings lt user gt Application Data is configured by default as a hidden directory under Windows Set options under the Windows Explorer gt View menu to show the directory Version 2 7 5 2 Known Deficiencies in Version 2 7 5 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed 11 15 07 7 of 33 What s New in Version 2 7 5 Bug Fixes Fixed a bug in Level operator lt which only showed up if hit surface AND drop over land were unchecked It appears that a leve
46. raphics displays to become illegible Restarting the program fixes the problem 11 15 07 21 of 33 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 8 62626 comment for LAST REPORT changed to read LAST REPORT FROM OB 01 THRU xx TO icao where xx is the current observation number and icao is the ICAO indicator Fixed a bug in the environment radix report This field was not updating in the 62626 comment after the user changed it on the COMMS tab Fix similar problem in correction number Version 2 1 7 8 June 2000 Known Deficiencies in Version 2 1 7 The resizing problem noted in Version 2 0 0 has not been fixed Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 7 If no winds are reported the wind speed units indicator specifies mps instead of knots 62626 messages will line wrap when necessary DLM WIND string added to the 62626 section WL150 string added to the 62626 section Bug fixed in lau
47. rides sse 10 Designated Data Source and Destination Directories sse 10 TEMP Message Emailing itte tei te tho ede ADO a decetero dna doa nda dote dodenus 10 VERSION 2 6 5 31 JULY 2006 csccccscsscssssscssssscssssscsscsscsscsscssssacssssscsassassacsscsassacsacsassacsacsassassassacsacsassacsaceaces 10 KNOWN DEFICIENCIES IN VERSION 2 6 5 cccccsssccssscsssccsssccssscessecsssecssecesseceseeceseccsascessecessecessecssseeesecesseceseeesseeess 10 WHAT S NEW IN VERSION 2 6 5 ccccccssscsssccssscessecessecsssccssscesecessecsseecssscessecessecessecessecesscessecessecesscesecessecesseeeateess 10 11 15 07 1 of 33 VERSION 2 6 4 18 JUNE 2006 issscssscanscassacsacessassacesacesscnsacesacendenvacesacensanbidassacensansacesacensenvancsacendendacssacentensdness 10 KNOWN DEFICIENCIESIN VERSION 2 04 iii aiii 10 WHAT S NEW IN VERSI N 256 1 E E EEEE is 10 Configuration DIF CIOFIEs iet eite e tee eee ebbe bayern eee b E E ERU Eee eee 10 VERSION 2 6 3 16 JUNE 2006 scscosscsscssssoncsssssesccesssssesesasosesasedeaasonssasenesaconcsasesesaconssasssesasodesaseccaasenssasenesdsoneae 11 KNOWN DEFICIENCIES IN VERSION 2 6 3 ccccccssccssscsssccssscessscessecsssecssscessecessecessecssscesseceseecsssecsascesaecessecsseecsaeeess 11 WHAT SNEWIN VERSION 2 6 3 5 dot a mede re TRE VER TO Noid tablet Obie Hone 11 Dropsonde Wind Equilibration sees tenente entente nennen 11 VERSION 2 6 2 15 JUNE 2006 00000 da
48. rom Visual Studio 6 to Visual Studio NET 2003 While this is transparent to the user this compiler is much more standards compliant The compiled code should also run faster Switch to MST install system Aspen is now distributed as a Microsoft System Installer MSI package This allows the install process to take advantage of the MSI install uninstall repair deployment functionality All DLLs and supporting files are now placed in the Aspen install directory Previously some DLLs were installed in Windows system directories which could lead to clashes with existing system files Users can install Aspen without having Administrator privileges Support dropped for Windows 98 Starting with Aspen V2 6 0 Windows 98 is no longer supported Graphics The windows graphing component has been upgraded from version 4 to version 5 of the Gigasoft ProEssentials component Version 2 5 6 15 December 2004 Known Deficiencies in Version 2 5 6 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 5 6 GAUS file support added Aspen can now read GAUS format files The GAUS files are very similar to MCASS files Skew t shared with other projects The skew t code and graphics adapter arrangement were modified to allow sharing with other projects and Proessentials
49. rst winds are not usable as they represent the deceleration of the sonde after launch Version 2 6 2 15 June 2006 Known Deficiencies in Version 2 6 2 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 6 2 File Formats Yet another version of the AVAPS file has appeared and Aspen has been modified to decode it properly The ptu time offset and the AVAPS file format indicators were changed in that file The Aspen version number now appears in the post processing comments of the EOL output file format Version 2 6 1 24 May 2006 Known Deficiencies in Version 2 6 1 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 6 1 Observed positions The sonde positions provided in the input file can be retained in favor of the integrated winds position A new Boolean configuration parameter ReportObservedPos has been added to select this option The default value is false When set true the raw position information is passed to the QC data sets rather than the position as integrated from the winds This is useful in cases where the user wishes to take advantage of a GPS posi
50. scsccsssssccsssssccesssscsssssscssssscsesssscsssssscesessscsesssseessssscesessseeesssseesaeas 29 WHAT S NEW IN VERSION 20 a EORR WO re E e e WE ERE EE n edere 29 11 15 07 4 of 33 VERSION 2 0 2 26 MAY 1999 oonnnconiononiononoanoncononocnoncononcononcononnononnonocnoncononrononnonocnonoononnonon canon rononrononronocnonconono 30 KNOWN DEFICIENCIES IN VERSION 2 0 2 ccccccscccssscessscsssccssscessecsssecssecessecessecsssecssscesseceseecessecsusceaeceseeesseeceaeenss 30 WHAT S NEW IN VERSION 20 2 i vette eed ih Do Rd 30 VERSION 2 0 1 21 MAY 1999 lt i cccccssscsscansasssassecasonssnsssoassanssasoseadsonsecsbbesssondsasecsonsabesnodseshcontsaseesaseensecsosedsiosses 30 KNOWN DEFICIENCIES IN VERSION 2 0 1 ccccccccssscsssccsssccssscessecsssecssscessecessecsssecssscesseceseecessecsuseesaeceseecsseecsaeeess 30 WHAT SNEWIN VERSION2 0 1 sus ore dero re vorgehen ote de artem ber ee o aes 31 VERSION 2 0 0 17 MAY 1999 ccccecssssesssenssasesesssonssasssesecenssasesesscenssassnesasensensossonssasbasoasenssasenssdescsenssassnesaceness 31 KNOWN DEFICIENCIES IN VERSION 2 0 0 cccccscccssscessccessecssscessecsssccssscesseceseecessecssscessecessecessecssseeaecessecessecsseeess 31 WHAT S NEW IN VERSION 2 0 0 cccccessccssscessscessecessccssscessecessecsseecssecessecessecessecessecsscessecessecesecessecessecesteceaeeess 31 Performances et INO Be o e ee 31 Usernterfaces as RR RUE NBN 31 DOCAS ON sis onn ep RUN EUR BU EI UR ERE 32 OC Configuration and
51. sseecsaeenss 22 WHAT SANEWTN VERSION Zlatan ar tee ore 22 VERSION 2 1 6 LI EEB 2000 eccccsicessccsssasianssccassassasesacsacasianssncobsessanssncpbossiansancucasiaassnesecassnnsiassesvacsesssebsstatiosse 22 KNOWN DEFICIENCIES IN VERSION 2 1 6 wcccccccccsccsssssccsssssccesssscsssssscssssscsesssscessssscessssscessssscessssscsssssscesssssesaess 22 WHAT S NEW IN VERSION 2 1 6 55 one Sse GE ou HBR de pte bee mee boven 23 VERSION 2 1 5 8 JAN 2000 daccscctcoscssssscsacenssaseccsscenesssscesacenssasedessconssascbesdcenssasecesdcenesasscesaceassasedessconsscssacdadesese 23 KNOWN DEFICIENCIES IN VERSION 2 1 5 ceccccccccccccessssccessssccessssccssssscsssssscsesssscsssssscssessscsesssscsesssscessssscesessssesaeas 23 WHAT S NEW IN VERSION 2 1 5 vcccccccccessecssscessecescecsssccssscessecsssecsssecuscessecesecessecessccascesaecessecesseeuecessecesseeeseeess 23 VERSION 231 4 5 JAN 2000 cs cccest ccaccectensiccatcestenctcuassectanssacatceatedsscsedcsatanedacaitcsatenstadaasedhesssasatcnaseastasatere 23 KNOWN DEFICIENCIES IN VERSION 2 1 4 vocccccccccccecsssccessssccesssscsssssscsssssscsesssscsssssscessssscesessscessssssesessscessssceseaeas 23 WHATAS NEW IN VERSIONS dei 24 VERSION 2 1 3 23 NOV 1999 ccsricssscssscssdentacsodeshccnsacesacssdentecsodestasnsdassacsageatdagodesbeonsdassdenadenteaodsebesasdessacsaesaeae 24 KNOWN DEFICIENCIES IN VERSION 2 1 3 viccccccccccccsssssccsssssccesssscsessscsesssscsesssscessssscsecssscsesssscessssscesessscessssscesaeas 24 WHAT
52. sssssssssssssssssssassassssssssassacsasssssacsassassassassacsacsassacsacsacsassacsacsacs 8 KNOWN DEFICIENCIES IN VERSION 2 73 cccstecscesecesecevstvcssecegeis sei idas 8 WHATS NEW IN VERSION 2 75 en vars sok B BN oak a 8 O C SUMMON LLL 8 Visual tudio Upgrade iia o ROO nan REOR asa PET RE pas 9 MINE iEn DEO ND UoNOBOHDBOPDPBOEOBO BO DO Dopo ope pO o Boo Oo Eo DB 9 VERSION 2 7 2 FEBRUARY 11 2007 scsssscscssccsoncsesdussasansastensacconcsssensGesonsestenssecnsesconsesoontensonseceonsencousensentense 9 KNOWN DEFICIENCIES IN VERSION 2 7 2 sscccsssssessevestevevecesencusacevtseosccvsstevsteesuensevtcdevsdvsstevsssosvansentssensevestesessonaed 9 WHAT S NEW IN VERSION 27 2 net o toa etos D HER IHE EO E FO Ye ete iunt gts 9 Final Smoothing rto tede eb ee eter i e ie ede een ein i ede fe reete 9 MIROFEIXGSS irse tette otto ettet le Lab bete ice does beet reddo Brest Besten Beste Bo LO tede Ev EA cua 9 VERSION 2 7 1 SEPTEMBER 25 2006 ssicssiesssasstssactasiaiestentessstssdedacansdareatenteassesodedecensdaieasencenssucsbesasonsdniessaase 9 KNOWN DEFICIENCIES IN VERSION 2 7 1 ccccccscccssscessccessecessccssscsssecsssccssscessecessecsssecssscesseceseeceseecsssecsascesseceseeesues 9 WHAT S NEW B SITES acp H 9 Levels Editing a ed e e E E Annan Pe TE Ra CD coca de P ore do O 9 Tevels PIODDPEQCOE ose eu DR quo DR ME DC eg ELI DD DV OI LE Unt 9 Fixed Launch Wind Speed and Launch Wind Direction Over
53. tab Successively processing many files 30 during one run of Avaps Editor can cause the graphics displays to become illegible Restarting the program fixes the problem 11 15 07 25 of 33 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 1 1 Fixed a bug in the coding of the check digit Fixed a bug in the coding of heights that round to 1000 m GG group now rounds up to the next hour if minutes are equal to 30 Version 2 1 0 10 September 1999 Known Deficiencies in Version 2 1 0 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Launch wind speed and direction are not available for editing on the main tab What s New in Version 2 1 0 A check was added for failures of the filtering routine in the filter check and the final smoothing If the filtering algorithm fails the data is not modified and a warning message is given to the user Avaps Editor can now process upsonde data formatted in the NCAR GLASS D file format The program alters slightly some of the processing algorithms for upsonde data Added capability to process NCAR CLASS files The smoothing of the QC pressure field now occurs before the pressure monotonic check placing it two QC steps ahead of where it was perfor
54. tag decoding in AvapsFileHeader to catch some dormant errors in Avaps file coding Version 2 7 2 February 11 2007 Known Deficiencies in Version 2 7 2 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 7 2 Final Smoothing Setting the final smoothing wavelength to O can disable the final smoothing This is useful if Q C procedures are to be applied without any smoothing of the final data Minor Fixes Fixed bug in AVAPS file decoding relating to the launch altitude and gps measurement Application version number now reports 4 version digits Version 2 7 1 September 25 2006 Known Deficiencies in Version 2 7 1 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 7 1 Levels Editing On the Levels tab individual fields within a given level may be selectively disabled by clicking on the field The whole level may also be disabled by clicking on the level name Levels Plot Trace The Levels button on the XY graph now displays a trace of the levels along with the levels hot spot symbols When the levels are edited on the Levels tab the changes are reflected i
55. talled in or the directory of the first file processed by Aspen during that run Be sure to disable the option when not needed in order to avoid littering the system with diagnostic files Version 2 7 3 September 1 2007 Known Deficiencies in Version 2 7 3 Surface winds are not computed when Surface Alt Unknown is checked This is due to the dependency of the surface wind computation on known altitudes i e 10 or 12 m above surface and can be fixed What s New in Version 2 7 3 Q C Summary Added reporting of the number of data points rejected by each Q C algorithm for each of the sounding parameters The summary information on the Summary Tab can be saved to a text file 11 15 07 8 of 33 Visual Studio Upgrade The project was upgraded to build under Visual Studio 2005 The software is now built on an XP system running under Parallels on a MacBook Pro Visual Studio creates executables that are about twice as large as the previous version leading to a 6MB increase in the size of the MSI Minor Fixes Missing GPS vertical velocity changed from 999 0 to 99 0 a couple of years ago and was just detected Now either 999 0 or 99 0 result in missing GPS vertical velocity A minor bug in string trimming routines was fixed Limit the AEV field to 5 characters and fix so that it is created correctly it was 00000 in v2 7 2 Fixed a minor memory leak in the ExtendedStatic user interface class Added error checking on the time
56. tion measured directly by the sonde This option can be set on the Other Options tab of the configuration dialog GPS altitude added to output files The raw i e observed GPS altitude was added to the CSV EOL and netCDF outout file formats QC files in these formats will contain both an integrated altitude obtained from the hypsometric equation and the 11 15 07 11 of 33 raw observed value typically GPS Raw files in these formats will only report the raw observed GPS altitude Note that currently the only input files that might provide GPS altitudes are CSV and GAUS Latitude and longitude choice The user can elect to use either the originally observed sonde position usually GPS or the wind integrated position reported in the latitude and longitude fields of the QC output files WMO Message Added the ATCF field to the 62626 group of WMO section 10 If the Obs number on the Comms tab is blank then an Obs number of 99 will be assigned in the TEMP DROP 62626 group File Formats Aspen can now read and write the recently specified EOL sounding file format Support was added for the AVAPS file format version 1 6 AspenQC AspenQC now has a command line switch for specifying the configuration set name to be used so that the aspen xml file doesn t need to be edited in order to switch configuration sets Administrative The Aspen source code and supporting files have been migrated from the NCAR EOL CVS repository to t
57. ttons on the graphics displays which allow data point markers and grid displays to be toggled on and off Fixed heights logic for Surface Alt Unknown Downward and upward integrations were confused because of this switch Added display of a data status column on the Raw tab For dropsonde this shows a 1 if the checksum is non zero The end of drop time override fixed to insure that data within the tenth of a second that was chosen is included Previously if a user specified a time to a tenth if the point had a time a few hundredths greater would not be included Added an option to specify the nominal descent rate at either 5 m s or 15 m s This affects the ambient temperature and pressure equilibration processing and the temperature dynamic adjustment If the last wind altitude is greater than 999m it is not coded This is at the request of James Franklin Included the Q C parameters in the global parameters for netCDF Q C file saves and a couple of other parameters in the global attributes for both the Q C and raw netCDF saves In consultation with the NHC the editor version number is coded in the 62626 group of a TEMPDROP message with an identifier of AEV Version 2 1 1 23 September 1999 Known Deficiencies in Version 2 1 1 The resizing problem noted in Version 2 0 0 has not been fixed Long messages in the 62626 group do not line wrap Launch wind speed and direction are not available for editing on the main
58. ual describes the operation of BatchAspen Miscellaneous Disabled the toolbar docking This feature was not being used and could potentially confuse some users if it was accidentally activated The resizing problem noted in Version 2 0 0 has been fixed The application window for each file new file being analyzed now opens at the correct size 11 15 07 20 of 33 The limit on the number of files that can be open at the same time has been increased to 20 Enabled temperature sensor dynamic correction for up soundings Reworked the input file format detection so that Aspen can also process CLASS format files produced by Aspen Doing this however is probably a bad idea Aspen can write dropsonde data in the CLASS format But if the file is then read back into Aspen it will assume that it is a CLASS sounding and apply incorrect processing steps The Q C d vertical velocity Dz Dt has been added to the Q C tabulated data display The vertical velocity is not computed for aircraft point in the sounding since this was leading to bogus values in a region where the quantity is not accurately measured RH lower limiting is now performed after the final smoothing step so that negative RH values created by the smoothing are eliminated Added sample data files for different types of sounding systems The files are found under Program Files gt NCAR gt Aspen gt Sample Data Installation of the sample data is now optionally select
59. ure temperature and sensor ventilation rate The previous version gave a time constant that was not correct for drops that were launched from high altitudes Because the ambient equilibration routine uses the temperature time constant to determine how much temperature and pressure data to discard right after the drop begins an incorrect determination of this 11 15 07 19 of 33 region was being made The new time constant correctly determines the appropriate ambient equilibration routine In general the new time constant is slightly smaller than the previous formulation This will have a slight impact on the dynamic temperature adjustment Removed the Nominal Ascent Rate selection from the options tab as it is no longer needed for the temperature time constant The ambient equilibration interval was increased from 5 5 temperature time constants to 7 time constants for pressure and temperature This is to accommodate the slightly smaller temperature time constant and maintain consistency with the HAPS processing Added Sonde Mass and Parachute Area parameters to the options tab for cases where a non standard parachute and dropsonde are used These parameters are used to calculate a theoretical fall rate which is needed to calculate the temperature time constant immediately after launch from the aircraft WMO message coding The Max wind level has been corrected to code a maximum wind only if the level codes to

Readme

Contents

Download Pdf Manuals

Related Search

Related Contents