NPP Chooser
Posted: Tue Apr 19, 2011 7:58 pm
The NPP data chooser can be found in the Under Development list in the Data Sources tab of the Data Explorer window. The NPP chooser allows you to display NPP (NPOESS Preparatory Project) satellite data. If you have sample NPP data and are interested in using the NPP chooser, you must run the McIDAS-V version 1.01 package with build date 2011-04-16. To check the build date, see the Help -> About McIDAS-V menu. The NPP chooser will not work with older versions of McIDAS-V.
To display NPP data, open the NPP chooser, and select either one time to display one granule, or multiple times to display multiple granules to be aggregated together to produce a larger image. Select multiple granules with Ctrl+click. Once the chosen times are specified, click the Add Source button. After the data source is added, the Field Selector tab will open. If the key icon is shown in the Fields panel, open the tree and select the type of data to display. In the Displays panel, select the Display type for how to display the data (Image Display is the default). The Region tab shows the data to be loaded. When available, the Channels tab allows the user to select the wavenumber to be displayed. Click and drag the green line to select the wavenumber. Click the Create Display button to display the image in the Main Display Window.
Along the outer edges of the displayed data, black bands may appear due to the removal of duplicate data produced by the "bowtie deletion effect". Progress is being made in the effort to eliminate these black bands by filling them with the appropriate data. Multispectral displays may be used in different circumstances, enabling the user to have a hands-on approach to interact more with the data. This allows the data to be displayed and analyzed in a manner similar to the Satellite > HYDRA chooser.
At present, simulated NPP proxy data is available from NOAA. The current launch date for the NPP is 25 October 2011. The NPP mission is designed to support monitoring of climate variations and global biological productivity. More information on the NPP, including descriptions and uses of the various onboard sensors, can be found at: http://jointmission.gsfc.nasa.gov/.
Note: You need to have two files to display each granule (a data file and a geolocation file), beginning with the following for each type of NPP data:
ATMS (Advanced Technology Microwave Sounder): SATMS and GATMO
CrIS (Cross-track Infrared Sounder): SCRIS and GCRSO
VIIRS (Visible Infrared Imaging Radiometer Suite) includes SVI and SVM:
SVI: SVI and GIMGO
SVM: SVM and GMODO
The geolocation and data files have very similar names (the numbers after 'd', 't', 'e', and 'b' are identical, but the numbers following 'c' are different). For example, in the same folder you would need the following files to display an ATMSS NPP granule:
SATMS_npp_d20100906_t1935191_e1935505_b00012_c20110707155932067006_noaa_ops.h5
GATMO_npp_d20100906_t1935191_e1935505_b00012_c20110707155932065809_noaa_ops.h5
If both of these files are not in the same folder, then no files will be listed in the Data Explorer. If they are both in the same folder, then the SATMS file will be listed, and you can select the file and go on to display the data. The SATMS file is the data file, and the GATMO file is the geolocation file.
To display NPP data, open the NPP chooser, and select either one time to display one granule, or multiple times to display multiple granules to be aggregated together to produce a larger image. Select multiple granules with Ctrl+click. Once the chosen times are specified, click the Add Source button. After the data source is added, the Field Selector tab will open. If the key icon is shown in the Fields panel, open the tree and select the type of data to display. In the Displays panel, select the Display type for how to display the data (Image Display is the default). The Region tab shows the data to be loaded. When available, the Channels tab allows the user to select the wavenumber to be displayed. Click and drag the green line to select the wavenumber. Click the Create Display button to display the image in the Main Display Window.
Along the outer edges of the displayed data, black bands may appear due to the removal of duplicate data produced by the "bowtie deletion effect". Progress is being made in the effort to eliminate these black bands by filling them with the appropriate data. Multispectral displays may be used in different circumstances, enabling the user to have a hands-on approach to interact more with the data. This allows the data to be displayed and analyzed in a manner similar to the Satellite > HYDRA chooser.
At present, simulated NPP proxy data is available from NOAA. The current launch date for the NPP is 25 October 2011. The NPP mission is designed to support monitoring of climate variations and global biological productivity. More information on the NPP, including descriptions and uses of the various onboard sensors, can be found at: http://jointmission.gsfc.nasa.gov/.
Note: You need to have two files to display each granule (a data file and a geolocation file), beginning with the following for each type of NPP data:
ATMS (Advanced Technology Microwave Sounder): SATMS and GATMO
CrIS (Cross-track Infrared Sounder): SCRIS and GCRSO
VIIRS (Visible Infrared Imaging Radiometer Suite) includes SVI and SVM:
SVI: SVI and GIMGO
SVM: SVM and GMODO
The geolocation and data files have very similar names (the numbers after 'd', 't', 'e', and 'b' are identical, but the numbers following 'c' are different). For example, in the same folder you would need the following files to display an ATMSS NPP granule:
SATMS_npp_d20100906_t1935191_e1935505_b00012_c20110707155932067006_noaa_ops.h5
GATMO_npp_d20100906_t1935191_e1935505_b00012_c20110707155932065809_noaa_ops.h5
If both of these files are not in the same folder, then no files will be listed in the Data Explorer. If they are both in the same folder, then the SATMS file will be listed, and you can select the file and go on to display the data. The SATMS file is the data file, and the GATMO file is the geolocation file.