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ILWIS 3.6 Open GEONETCast Toolbox Plug-in User Manual

1. Export GeoTIFF Product Select an appropriate output directory and press Export Product This will take some time as all bands are exported Note from the Products View the various bands that are available radiance reflectance temperature angles etc Note the band number for reflec_1 reflec_2 and reflec_3a as you will use these later in ILWIS You can close VISAT BEAM when the export is completed Open ILWIS 3 6 with the Geonetcast Toolbox installed and select from the toolbox menu the option Import METOP AVHRR 3 from BEAM Specify the appropriate input file directory and output file directory Move to the specified output directory when the import is completed Double click the map list created the name you specified as the output file when importing the image From the map display options menu select the band numbers that represent reflec_1 for the Blue Band reflec_2 for the Green Band and reflec_3a for the Red Band and press OK most likely band numbers 6 7 8 respectively There is no need to change the default stretch values Add a vector file showing the country boundaries to the map display using the option info off and check the geometric properties Move the mouse with the left mouse button pressed over the map display Check the values obtained Also display the other imported image layers and note what these represent as well as their radiometric properties Import of JASON 2 processing result
2. C High Res Autoc If satisfied with the area covered by the selected image you can display the image Right click with the mouse over the filename in the Product View and from the context sensitive menu select the option Open RGB Image View From the VISAT Select RGB Image Channels select from the drop down list under Profile AVHRR 3 L1b 3a 2 1 Day and press OK You can zoom in and out using the navigator available at the top left portion of the image display window Once more click on the file name of the imported image in the Product View when selected it will appear blue Now select from the main menu the option Tools Map Projection Change the Name to an appropriate name e g avhrr_utm and under Projection select UTM Automatic Press OK In the Product View window a new item is now added e g called avhrr_utm Right click with the mouse over the filename in the Product View and from the context sensitive menu select the option Open RGB Image View From the VISAT Select RGB Image Channels select from the drop down list under Profile AVHRR 3 L1b 3a 2 1 Day and press OK You can zoom in and out using the navigator available at the top left portion of the image display window Once more click on the file name of the projected image in the Product View when selected it will appear blue Now select from the main menu the option Export
3. MODIS Fire Product This is the most basic fire product in which active fires and other thermal anomalies such as volcanoes are identified The Level 2 product is defined in the MODIS orbit geometry Terra satellite covering an area of approximately 2340 by 2030 km in the across and along track directions respectively see also http modis fire umd edu products asp Typical filename is MOD14 P2009150 2050 hdf gz MOD 14 Pyyyyddd hhmm HDF4 gz compressed Note that the day number is Julian day About 270 files day are disseminated Check in the archive within the respective sub directory within ITC e g Z MODIS the availability of the data Note the year and Julian date of the day of fire data you want to import Open from the Geonetcast Toolbox the option MODIS Fire Product and sub menu item MODIS Aggregated Fire Product per Day Specify the appropriate year and Day Number Check if the input and output directory settings are correct and press show Note that all files for that given day are processed If fire vectors are present in the source data the shape files are extracted and these are imported as ILWIS vector files together with an associated table For more information on the table entries check the product description as provided on the website indicated above The import routine takes quite a while as a large number of files need to be processed MPE Direct This routine extracts the data directly from
4. M Geostationary MSG HRIT a a M MODIS Fire Product amp country_02 M MPE Direct EZ country_samecode M MPEF B country_samecode 5 phmax20090321 M MSG Satellite and Solar Zenith Azimuth Ar EE phmax20090321 M RSS MPEF phmaxval20090321 M Real Time MSG Visualization and Animation phmaxval20090321 M SAF Africa world seg DM SAF Euro y M SAF SST MSG GOES Combined M SAF South America M SPOT VGT4 Africa M SPOT VGT4 Africa ALBE M SPOT VGT4 Africa ALBO If you quickly want to repeat import of an identical product but of a different time it is much more convenient to simply change the time tag instead of going through the whole menu An example of a command line syntax generated for the CLM import for 200906021200 is given below CNlwis36 Extensions Geonetcast Toolbox toolbox_batchroutines clmimport bat 20090602 1200 Z MPEF 200906 02 D test_geonl C Mlwis3 Extensions Geonetcast Toolbox GDAL bin CNlwis36 C lwis36 Extensions Geonetcast Toolbox util The only change that needs to be applied to import the product that is available 15 minutes later is the time stamp now 200906021215 CNlwis36 Extensions Geonetcast Toolbox toolbox_batchroutines clmimport bat 20090602 1215 Z MPEF 2009 06 02 D test_geon CNlwis36 Extensions Geonetcast Toolbox GDAL bin C Ulwis36 C lwis36 Extensions Geonetcast Toolbox util You can press the command line history button and select the relevant import command ch
5. RAN KU provided to geta FEE YAY Mh Nn CY DEE Ss zooo f better overview of the capabilities of this freeware altimetry toolbox 507 233 78 45 00 0 S 102 35 04 45 W 78 45 00 00 S 102 35 04 45 W Export raster images from ILWIS to BILKO To continue to work with images using BILKO select from the Geonetcast Toolbox Menu the option Toolbox Settings and Export and from here two export options are available depending on the nature of the data as a Single image layer exported as TIF and as Multiple image layers exported as HDF4 Check in your active working directory a map image with a single image layer select the option Single image layer TIF and specify the appropriate Input Map and Output file Directory in the Export to GeoTiff menu Check in your active working directory an map list with multiple image layers select the Li Multiple Image Layers HDF4 option Multiple image layers HDF4 and specify the appropriate Input MapList and ale rossa Output file Directory in the Multiple Image nn Layers HDF4 menu Note that you need to c eee er specify the data type in this example a byte Unsigned integer 16 bits image and you can also specify the band Integer 32 bits sequence in the output HDF file See also the Unsigned integer 32 bits left hand fi gure Float 32 bits Float 64 bits Press OK to execute the export Close ILWIS aoe as a um Down
6. the EUMETSAT website So in order to run this application the computer should be connected to the internet The Java Applet that is executed can be found in the Ilwis directory under Extensions Geonetcast Toolbox MPEdirect The data is copied from http oiswww eumetsat org SDDI html grib html From the Geonetcast Toolbox the option MPE Direct can be selected and if the output directory is correctly specified the show button can be pressed to execute the processing Again note that these routines take time for the MPE product derived from MSG 96 files have to be copied imported and processed for Meteosat 7 there are 48 products respectively If the import process takes too long you can abort it by Extract last 24 hrs MPE product closing the Windows Command window L MSG based Output Directory D test_geon Open a rainfall map Cancel use as Representation mpe_single in the display window also add a vector layer showing the country boundaries Check the results note that the values indicate the rainfall in mm over a period of 15 minutes for MSG Real time MSG Visualization and animation Before you start a session on real time visualization of MSG take a look at the figure below indicating the structure of the various routines that are running once an instance from the Geonetcast Toolbox Menu Real Time MSG Visualization and Animation for a specific field of view of MSG is started Layout of the
7. various components for real time MSG visualization Initiated at specified system clock time at 15 minutes interval Note Format clock time of processing computer HH mm ss use appropriate time zone offset with UTC and local time From Windows Start Menu Settings Control Panel Regional and Language Options select Customize Time Source data directory in assumed in year month day structure If this is not the case the file simplegeo bat should be modified see example of the MSG Data Retriever Command Line string below used for the European window The N should be changed to Y see arrow for position of N in the string st_ilwdir Extensions Geonetcast Toolbox MSGDataRetriever gdalwarp exe config GDAL CACHEMAX 30 t_srs proj latlong te 10 613668 35 265211 13 548728 59 013056 tr 0 04300 0 04300 of ILWIS MSG st_inputdrive workingdate 1 2 3 N B 1 1 st_outputdrive st_outputpath vis workingtime To get an idea of the command line string that is generated by the Meteosat Second Generation Data Retriever open from the Geonetcast Toolbox menu the option Geostationary MSG HRIT and MSG HRIT Select the various import parameters from the menu and press the option Show command line The settings from this command line can be copied into the batch file simplegeo bat if you want to visualize another window but the projection latlong with a pixel size of 0 043 can be maintaine
8. EF Fle Edit Layers Options Help M MSG Satelite and Solar Zenith Az i p X Vh BH 187155524 ED RSS MPEF Sr LA M Real Time MSG Visualization and AI s EB country_02 M SAF Africa 3 Properties M SAF Euro S i lai20090421 M SAF SST MSG GOES Combined E Properties M SAF South America Legend M SPOT VGT4 Africa _ o c000 M SPOT VGT4 Africa ALBE C 1 7500 ED SPOT VGT4 Africa ALBQ __ 3 s000 M SPOT VGT4 Africa BBDHRN Tis 2500 B SPOT VGT4 Africa BBDHRT R 0000 M SPOT VGT4 Africa BBDHRY a M SPOT VGT4 Africa BIOQ ED SPOT Vegetation DMP M SPOT VGT4 Africa FCOVER ap gt x ED SPOT VGT4 Africa LAI ii SPOT VGT4 Africa DMP M SPOT Vegetation NDVI ff SPOT Vegetation NDWI Date yyyymmdecdec zoogos l M SPOT Vegetation PHENOKS Input Directory ZAVGT4Atrica DOT Von FENN oupa ntenoy Det en a hy M SPOT Vegetation YPI M Toolbox Settings and Export Show Deine Cene ko EB Image Processing T gt lt 16076 3806 16 14 24 9 S 7 58 21 71 E 16 14 24 88 S 7 58 21 71 E Query None Note that the VGT4Africa products are a decadal product in order to import the various products the Date format here should be specified as yyyymmdecdec where dec stand for decade There are three decades specified as 01 11 and 21 for the first 10 days the second series of 10 days and the remaining days for the last decade of the month respectivel
9. ILWIS 3 6 Open GEONET Cast Toolbox Plug in User Manual Part 2 Version 1 Ben Maathuis ITC Enschede May 2009 ITC Working with the ILWIS3 6 GEONETCast Toolbox plug in Calculation of the sun MSG satellite azimuth and zenith angles For further analysis often azimuth and zenith angles of the sun and the MSG satellite are required Computation of these angles is facilitated under the Geonetcast Toolbox option MSG Satellite and Solar Zenith Azimuth Angles Double click the sub menu and first calculate the zenith angles For Year Month and Day specify 2009 06 21 and for Time of day UTC 12 00 Press Show to execute the computation If you are more familiar with the southern hemisphere you can also specify for Year Month and Day 2009 12 21 and 12 00 UTC for the time respectively A number of zenith angle and derived maps are being generated The map called msgzen is the original satellite zenith angle map the msg_zenres is the zenith angle resampled to the MSG projection These angles remain constant as MSG is a geostationary satellite Also the secant of the MSG satellite zenith angle map is derived defined as 1 cos zenith_angle This map is called sec_msgzen Also the solar zenith angle is calculated and resampled to the MSG projection This output map is called sol_zenres and the secant is sec_solzen A sun elevation map is derived called sun_elev and is subsequently c
10. TOP A On the right side of the listing activate the option Favourite Note that the selected satellite is moving to the top of the satellites group list Move to the Main tab under the SatScape Settings menu and Save all settings In the SatScape Launch Pad select the option Pass Predictions From the calendar specify the year month day you would like to select to determine the time of satellite overpass for your specific location Select from This Satellite drop down list METOP A and press the GO button In the table that is subsequently generated the overpasses of the satellite is given You can use the Peak local time to get an idea of the best overpass images If interested in images of the morning overpass first note the time offset between local time and UTC time and select the appropriate local time using the file with the greatest Peak Elevation value In the example given below for a location situated at 52 degree North Latitude and 6 degree East Longitude for 01 June 2009 the most suitable image would be the one having the Peak local time of 12 31 18 Note that there is an offset between local time and UTC of minus 2 hours so the METOP AVHRR image that should be selected should have been recording at 10 31 18 As the AVHRR data is provided with start and end of scan time the appropriate image can be easily selected SatScape Pass Prediction for METOP A of 01 June 2009 1 Click on a date then choose h
11. Total Broadband directional BBDHRV bbdhr_vis 0 001 hemispherical reflectance Visible BioGeo Quality BIOQ nmod dataset gives the number Value of valid observations during the synthesis period Imk and sma Dry Matter Productivity DMP dmpyyyymmdecdecv 0 01 dmpyyyymmdecdeccl Class map Fraction of Surface covered FCOVER fcover 0 004 by Vegetation errfcover 0 004 Leaf Area Index LAI lai 0 033333333 Normalized Difference NDVI ndvi 0 004 0 1 Vegetation Index Normalized Difference NDWI ndwi 0 008 1 Water Index Phenology Key Stages PHENOKS phhalf number of phlength dekads since phs tart January Ist 1980 Phenology Maximum NDVI PHENOMAX phmax number of dekads since January Ist 1980 Pl 0 004 0 1 Small Water Bodies SWB swb Class map Vegetation Productivity VPI vpiyyyymmdecdecv Value Indicator VPiyyyymmdecdecc Class map All batch routines can be found under the ILWIS directory Extensions Geonetcast Toolbox toolbox_batchroutines and the batch filename convention used is VGT4 abbreviation import bat Note that the Abbreviation refers to the product names indicated in the table above Broadband albedo corresponds to the amount of solar energy reflected by a surface spectral albedo spectrally integrated over the 300 3000 nm wavelength domain It provides information on the radiative balance thus on temperature and water balance The spectral albedo
12. ange the time and press enter A new instance of an import is executed for the new time stamp given Try to import a later instance of a product using the command line history First use the menu option to import a product and note the creation of the string in the command line when executing the operation In a second step modify the Date portion of the string from the command line history and execute a second instance of an import of a similar product You can take the CLM under the MPEF menu This product has a temporal frequency of 15 minutes Using the Geonetcast Toolbox under ILWIS 3 6 Open with external freeware tools Not all data import routines to use data products that are provided through GEONETCast need to be developed under ILWIS as a number of other freeware routines are already available that have the capability to process certain data streams Furthermore other free software tools are widely used for capacity building within other disciplines like the use of BILKO for the marine RS society It was considered more important to develop efficient import or export routines so existing capabilities of these freeware tools can be fully utilized Within GEONETCast data is disseminated that is recorded by the Jason 2 altimeter instrument and those from various sensors recorded by METOP A Further details are provided how once the processing is completed by these freeware tools the data can be imported into ILWIS Also ex
13. d Currently from the Geonetcast Toolbox menu using the option Real Time MSG Visualization and Animation a selection can be made of a number of standard windows If one of the windows is selected check the settings of the input and output directories Eerie tal J and press show In the Windows Command EED teuaizeton euro j window all kind of settings are performed and in the end you are requested to provide Cancel your password to access the file server Provide your password in the Command Window and press enter The Command Window closes and you can also close ILWIS as the visualization is started based upon a Scheduled Task instance depending on the system s clock time it Real Time MSG Visualization To see if the Scheduled Task is created select from Windows Start Menu Settings Control Panel Scheduled Tasks The Task MSG_visual will appear Note the Schedule and the Next Run Time Double click the Task MSG_visual and inspect the other settings as well Note the batch file that is executed Run st_msg region bat see also the overview provided above If the application is left undisturbed every 15 minutes a new instance of an import sequence is executed and all images are visualized on the screen Activate the display window showing the imported MSG image To do so click with the left hand mouse button over the image Now you can use the scroll bar of the mouse to see the images that ha
14. in itself corresponds to hemispherical reflectance of the canopy 1 e the bidirectional reflectance integrated over the hemisphere with regards of the view directions i e view and solar zenith angles relative azimuth angles A simple approach consists in estimating two sorts of albedo the directional hemispherical albedo corresponding only to the direct radiation coming from the sun BBDHR and a bihemispherical albedo BBBHR corresponding roughly to the diffuse radiation assumed isotropic The directional hemispherical albedo is computed for the local solar noon In the framework of the VGT4AFRICA project data products for broadband directional hemispherical reflectance BBDHR are provided for the visible BBDHRV near infrared BBDHRN and total BBDHRT wavelength ranges Furthermore VGT4Africa also supplies the uncertainty budgets on these values in Albedo Error Budget ALBE products and some related quality information like a land cover map and a status map of quality bits in Albedo Quality ALBQ products It is important to account for this quality information and the error budgets when analysing the BBDHR values for the different wavelength regions Source From Product Meta Data description XML The 3 biogeophysical products Leaf Area Index LAD Fractional Green Cover FCOVER and BioGeo Quality BIOQ provide various parameters such as leaf area index fractional green cover both with an error budget land cover class and
15. lassified into a map called illum_cond indicating when it is day twilight or night over the field of view of MSG Open the various maps created you can use a Pseudo Representation In the map display window of the map called msg_zenres press the Layers button from the display menu select Add Graticule and select as Graticule distance 23 degree 26 minutes as this is the approximate location of the Tropic of Cancer Capricorn in the northern and southern hemisphere respectively Note that MSG is situated at 0 degree above the equator You can also add a vector layer with the country boundaries The ILWIS script that is used can be found in the Ilwis directory Extensions Geonetcast Toolbox angle and is called create_zenith_angle_maps there is another one for the azimuth angle calculations Move to this directory and open the script Study the content of both scripts If you make modifications to a script it is better to store it under another name Activate the Create Satellite and Solar Angle Maps option once more and now calculate the Azimuth angles using the same UTC time specifications as indicted before Maps calculated are msg_azres and sol_azres for the resampled azimuth angles of the satellite and sun respectively Eventually use another UTC time to calculate the solar zenith angle to get a better idea of the classification of the illumination conditions e g use a UTC time of 20 00
16. load and install BILKO The references are given in the document Other useful x ces software tools After installation start the application From the BILKO main menu select File and Open move to the directory where you stored the previously exported TIF single image layer select the appropriate file and press OK to Open the Image Accept the window size dimensions press OK and use the default stretch option press Apply From the Menu select View and Zoom and Preserve Shape Move the mouse with the left mouse button pressed over the image and note the values given at the bottom right hand of the BILKO menu Close the image layer Select from the BILKO menu the option File and Open Now select the exported Multi layer image Select the Scientific Data Directory and on the right hand side select using the right mouse button over the 3 dimensional Scientific Dataset the context sensitive option Open Connected and press OK Now from the BILKO main Menu select Image and from the dropdown list select Composite Have a look at the results Note that the band sequence used can be changed when exporting the Map List from ILWIS
17. netcast Toolbox menu the option VGT4 Africa and retrieve some of the products Check in the archive which data is available before you start the import e g Z WGT4Africa Note that for a number of products standard colour representations are available like NDVI LAI FCover The class maps can be visualized using the default representation When visualizing the imported products also add a layer showing the country boundaries In the ILWIS directory Extensions Geonetcast Toolbox util maps you will also find a vector file only showing the African countries This file can be copied to the active working directory as well use the ILWIS copy object to option Upon import consult the product description provided in the VGT4Africa User Manual for a more in depth discussion Using the Command Line History from the main ILWIS menu ILWIS keeps a track of the last series of operations that have been executed This command line history is available when clicking the drop down button on the right side of the command line under the main ILWIS menu See also the figure below Access to the command history WS ILWIS Open D test_geon1 File Edit Operations View Window Help AR XE EEE kBaREneamBmL o amp ne ERBER A DOR ia oe ICAllwis36 Extensions Geonetcast Toolboxitoolbox_batchroutines VGT4phenomaximport bat 20090321 Z VGT4Africa D test_geo v x Operation Tree Operation List Navigator test_geon
18. ow many days worth of p ou would like 2 You can choose to have predictions for a single satellite or all of your favourites 3 le p only be you want to display the pas 4 When you re re he GO button Pass predictions for METOP A on 1 Jun 2009 only Visible and Radio passes Clear Print Save as Spreadsheet PeakEL End End AZ Length m Visible METOP A Select and copy the relevant file containing the Peak time for the greatest Peak Elevation from the archive e g Z METOP to your local working directory Close SatScape Download and install VISAT BEAM also download the AVHRR METOP reader plug in called beam metop avhrr reader 1 3 jar Copy this plug in at least version 1 3 into the BEAM sub directory Modules The references are given in the document Other useful software tools where to obtain the freeware utilities Open VISAT BEAM select from the main menu the option File Import and Import Metop AVHRR 3 Level 1b Product Browse to your active working directory and double click the selected file that you have copied from the archive before The file name now appears in the product view To get an idea of the area recorded by METOP AVHRR 3 select from the main menu View Tool Windows and World Map The field of view of the specific recording is indicated over a world map See also figure below Worldmap showing extent of AVHRR 3 image selected World Map 1 OL 2x O4x O8x 16x 32x
19. perations menu press Export Note that for import in ILWIS a Global resolution is required X from 180 to 180 and for Y from 90 to 90 The resolution Step can be 1 3 1 5 1 7 1 9 of a degree respectively Specify that the export format is NetCdf and select an appropriate filename and output directory in the Export menu Press OK to execute the export Open ILWIS and from the Geonetcast Toolbox select the option Import Jason 2 from BRAT Select the appropriate input file and specify an output file Also specify the appropriate resolution 1 3 of a degree is 3 etc Press OK to execute the import Display the resulting map using a pseudo representation and eventually stretch the map e g from 50 to 50 Also add a vector file showing the country boundaries Browse with the cursor pressing the left mouse button over the map and check the resulting values BRAT exported altimetry data in ILWIS 64 Export JAS_NEW_3d MapMirrorRotate Export JAS_NEW mpr Rotate270 ILWIS File Edit Layers Options Help In BRAT many DOK VAR RK a D 1 24663867 other processing ZE country_02 5 S 7 ao es BE i g Properties Bx SER Pr ns a ee 5 op tions ale SB Epos yg TESTEN thes ct available check ES Properties lt z N SEN fee 77 state Legend ae A A TRE R 5 4 N the training BE iy fi wi s P HA A 25 000 aa V DA Neg N X material that is ooo AA Ay g VAA ERA A RA AAEN ff p 2500 A A A y ii ae TKN SM
20. port routines are described how to transfer the results obtained by ILWIS can be transferred to BILKO Processing of METOP AVHRR 3 data using SatScape and VISAT BEAM EPS formatted AVHRR 3 data is disseminated in chunks of 3 minutes of recording by GEONETCast The filename convention uses the year month day begin and end time of recording Sample filename is specified below AVHR_xxx_1B_M02_20070925072803Z_20070925073103Z_N_O_20070925090937Z The time difference between the first date time string and the second one is 3 minutes scanning from 07 28 03 to 07 31 03 Problem is that over a specific area one needs to know when the satellite was passing over In order to determine the time of overpass of METOP over a certain latitude longitude position use can be made of SatScape Download and install SatScape The references are given in the document Other useful software tools After installation start the application From the SatScape launch pad note the local and UTC time Select Settings and from the SatScape Settings Menu select Locations Specify in the lower part of the menu the location name and latitude longitude of this location Press the Use as Primary button on the lower left the location settings will be transferred to the upper part of the menu Save the setting Subsequently move to the sub menu Groups and from the Satellite Groups select the Group weather Scroll through the list and select ME
21. s from BRAT The Basic Radar Altimetry Toolbox is an excellent utility to perform the processing of altimetry data The processed altimetry data that is recorded by the JASON 2 instrument is disseminated via GEONETCast Check on the file server the data that is available e g Z JASON Look for the data having a file name convention as JA2_OPN_2PcS033_194_20090601_212231_20090601_231853 bz2 Copy a selected set of JA2 OPN files to your local harddisk Before you can use the data in BRAT make sure that the files are decompressed Download and install BRAT The references are given in the document Other useful software tools Also consult the information as provided by EUMETSAT at http www eumetsat int Home Main What_We_Do Satellites Jason index htm l en and download the OSTM Jason 2 Products Handbook which is available at http www eumetsat int Home Main What_We_Do Satellites Jason Services l en This document is providing more information about the file name convention that is used etc Below a short summary is provided of the main steps in BRAT For more elaborate exercise material consult the Reference Guide and Training manuals that are provided at the download site of BRAT Open BRAT and create a new Workspace and save it From the menu select Datasets and create a new one You can give it a relevant name e g Jason_OGDR select the option Add Files and add all decompressed Jason 2 files Select from
22. the menu Operations and create a new operation provide it with an operation name e g Jason_OGDR Active your current dataset under the heading Datasets In the Fields below select lon degrees_east right click your mouse and select set as X Repeat this procedure for lat degrees_north and set as Y Now note the Resolution and filter information default settings are for a global definition at a spatial resolution of 1 3 degree Now under the Data Expressions you will see that X is defined as longitude Y is defined as latitude Right click with the mouse on the Data field and Insert Empty Expression Again right click on the created Expression and select Insert a Formula Now you can select SSH_Jason1_GdrA uncheck as alias and press OK The full expression is now provided Modify the first parameter altitude in the Expression and change this to alt You can eventually press the option Check syntax After this modification you should not get a warning message when the syntax is checked Press Execute to start the calculation of the SSH_Jason1_GdrA operation If you get an error message at the start of the processing save your work exit BRAT and Start BRAT again and execute the operation once more You can display your results in BRAT This is not further described here as you are now going to use the Export option In the O
23. the number of valid observations that are taken into account The land cover class GLC2000 number of valid observations and status map for LAI and FCOVER values are included in BIOQ products These quality indicators are therefore to be used in the analysis of the LAI and FCOVER products of the same dekad Source From Product Meta Data description XML The 3 Phenological products Key Stages Maximum NDVI and Monitoring provide various phenological parameters such as the start date of the detected growing season the date of half senescence the season length which are included in Phenology Key Stages PHENOKS products The maximum NDVI Normalized Difference Vegetation Index value observed during the season and the date it was observed on can be found in the Phenology Maximum NDVI PHENOMAX product of the same 10 day period and indicators of probable start of season and other monitoring parameters can be found in the Phenology Monitoring PHENOMON product So it is important to view the 3 Phenology products PHENOKS PHENOMAX and PHENOMON of the same dekad together To compute all these seasonal parameters the phenology production takes into account 54 dekads of SPOT VEGETATION NDVI including the current one which represent 1 5 years of data in total The PHENOMON product is currently not distributed via GEONETCast Source From Product Meta Data description XML Import a number of products from VGT4Africa Select from the Geo
24. ve been visualized before To stop an instance of Real Time MSG Visualization and Animation select from this menu the option Stop Animation and type Y in the Command Window The Scheduled Task is than being deleted from the Tasks Manager Import of products derived from the SPOT Vegetation Instrument VGT4Africa Within the GEONETCast data stream also non meteorological organizations can contribute Check the listing of multicast channels to see what other data providers do disseminate their data through EUMETCast GEONETCast available at http www eumetsat int Home Main What_We_Do EUMETCast Reception_Station_Set up index htm An example is the products that are disseminated through the VGT4Africa initiative On a 10 day basis various products are generated and subsequently disseminated Open from the Geonetcast Toolbox menu the option SPOT VGT4 Africa and check for yourself the import options of the various data sources that are available See also the figure below Toolbox menu structure for VGT4Africa products I ILWIS Open D test_geon1 EIER File Edit Operations View Window Help sOD _axgiw Wpesmmaneaaserliesne iaseer nst ne SPOTVEGETATIONDMP Kal Operation List Navigator Mm D test_geon Operation Tree E country_02 ff Geostationary MSG HRIT a country_02 EN En 2 Product Fy 244 lai20090421 D test_geon1 tlai20090421 0 033333333 ILWIS AR rec M MP
25. y In the example given above the Date is specified as year 2009 month May decade 11 second decade of May A lot of information is provided on the VGT4Africa Home page available at http www vet4africa org From the Homepage menu select Documents and under User Guides download the VGT4Africa user manual and save this document to your local harddisk Also read before you continue from this webpage the product sheets for the various data types In the VGT4Africa user manual from page 97 onward the details are given for the various products that are routinely produced When importing the products it is assumed that this reference is used prior to import The table below provides a short summary of the VGT4Africa product import routines available within the Geonetcast Toolbox under the option VGT4 Africa VGT4Africa import details Name product Abbreviation Files created upon Calibration import all file names coefficients end with yyyymmdecdec used Albedo Error Budget ALBE ERR_bbdhr 0 0001 ERR_bbdhr_NIR 0 0001 ERR_bbdhr_VIS 0 0001 Albedo Quality ALBQ Imk land cover map of GLC2000 Class map classes sma Status Map for Visible Near Bitwise e encoded reflectance BBDHRT BBDHRN and BBDHRV Broadband directional BBDHRN bbdhr_nir 0 001 hemispherical reflectance Near Infrared Broadband directional BBDHRT bbdhrt 0 001 hemispherical reflectance

ILWIS 3.6 Open GEONETCast Toolbox Plug-in User Manual

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