1. Centre de Météorologie Spatiale DP/CMS/R&D–GuyRochard28/11/2002 Direction de la Production Centre de Météorologie Spatiale Guy.Rochard@meteo.fr Direction de la Production This ppt is on the WEB : http://guy.rochard.free.fr/meteo/fichiers/locglob.ppt Local & global preprocessings

2. Advanced Technology Microwave Sounder (ATMS) Northrop Grumman Ozone Mapping & Profiler Suite (OMPS) Ball Aerospace Cross-track IR Sounder (CrIS) 1.ITT Industries Visible/IR Imaging Radiometer Suite (VIIRS) Raytheon SBRS Instruments in Development/Production Phase Conical-scanning Microwave Imager/Sounder (CMIS) Boeing

3. CrIS ITT5 VIIRS Raytheon7 GPSOSSAAB2 ATMS Northrup Grumman 4 OMPS BALL3 CMIS Boeing6 ADCSCNES/TRW4 SARSATCNES/DND/TRW6 ALT TRW2 APSTBD2 SESSBALL2 ERBSTRW2 TSISLASP2 CMIS VIIRS CrIS ATMS ERBS OMPS NPOESS 1330 Configuration Last column is the number of instruments, one more ATMS is from NASA

4. 13301730 2130 VIIRS CMIS CrIS ATMS SESS GPSOS SS SARSAT ADCS ERBS OMPS VIIRS CMIS VIIRS CMIS SS SARSAT ADCS ALT TSIS SS CrIS ATMS APS SARSAT VIIRS 1030 ATMS CrIS CERES OMPS = Potential flight of opportunity NPP NPOESS

6. Thanks to Karen for presenting this ppt. With POES, we met some problems between global and local level 1B : http://guy.rochard.free.fr/meteo/fichiers/STG_SWG_12_2002_Brunel.pdf presents global/local differences for POES calibration and navigation http://guy.rochard.free.fr/meteo/fichiers/10282.doc indicates the needed coherence between local & global calibrations. With NPP & NPOESS, we could met similar troubles. The following slide indicates other problems to solve for both global and local preprocessings to optimize the coupling of instruments.

7. http://guy.rochard.free.fr/meteo/fichiers/crop0002.jpg shows HIRS channel registration. http://guy.rochard.free.fr/meteo/fichiers/crop0006.jpg AVHRR channel registration. http://guy.rochard.free.fr/meteo/fichiers/secondlobes.doc secondary lobe antenna of AMSU. http://guy.rochard.free.fr/meteo/fichiers/crop0003.jpg misalignment between AVHRR and HIRS. http://guy.rochard.free.fr/meteo/fichiers/Misalignment_and_coregistration.doc summarizes a work done to improve partly these problems on POES.

8. HIRS

9. AVHRR

10. Secondary lobes AMSU

11. MISALIGMENT HIRS/AVHRR

12. * http://www.meteorologie.eu.org/ici/ shows the benefit to collocate AVHRR and HIRS. * Why not a collocation of VIRSS, CrIS, ATMS, CMIS ?… http://guy.rochard.free.fr/meteo/fichiers/localglobalHIRS.doc shows that a too large difference between NESDIS (global) and Lannion (local) rejects one of the data source in NWP. * About navigation of the data, collocation + landmarks are the best using automatic software. * About calibration, a compromise must be found between the global preprocessing (using one full orbit) and direct readout.

13. REPARTITION GEOGRAPHIQUE DES OBSERVATIONS ATOVS HIRS

14. SafetyNet is a system of 15 globally distributed SMD receptors linked to the centrals via commercial fiber, it enables low data latency and high data availability Safety Net

15. Direct readout : The hardware exists…so, now, the software has to come.!… NPP & NPOESS also… Thanks !… This ppt is available at : http://guy.rochard.free.fr/meteo/fichiers/locglob.ppt

16. * Outside USA, it’s not sure to get SAFETY NET data in 20 mn. * It’s necessary for regional use to get the data through direct readout access up to 1B navigated radiances (at least), then : * A local preprocessing package is necessary as AAPP for POES. * Coherence between “local/global” calibration & navigation is needed as collocation between visible, infra-red and microwave… and an operational monitoring of this coherence should exist * Up to level 1B, we must rely on the manufacturers of the radiometers and spacecrafts.. Above 1B, all should should get benefit from a cooperation with users en scientists. Conclusions :