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Centre de Météorologie Spatiale

Direction de la Production. Direction de la Production. Centre de Météorologie Spatiale. DP/CMS/R. &D. –. Guy. Rochard. 28/11/2002. Centre de Météorologie Spatiale. This ppt is on the WEB : http://guy.rochard.free.fr/meteo/fichiers/locglob.ppt. Local & global preprocessings.

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Centre de Météorologie Spatiale

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  1. Direction de la Production Direction de la Production Centre de Météorologie Spatiale DP/CMS/R &D – Guy Rochard 28/11/2002 Centre de Météorologie Spatiale This ppt is on the WEB : http://guy.rochard.free.fr/meteo/fichiers/locglob.ppt Local & global preprocessings Guy.Rochard@meteo.fr

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

  3. NPOESS 1330 Configuration CMIS ATMS CrIS VIIRS ERBS OMPS Last column is the number of instruments, one more ATMS is from NASA

  4. NPOESS NPP 1330 1730 1030 2130 VIIRS VIIRS VIIRS VIIRS CMIS CMIS CMIS CrIS CrIS CrIS ATMS ATMS ATMS SESS GPSOS SS SS SS SARSAT SARSAT SARSAT ADCS ADCS CERES ERBS OMPS OMPS ALT APS TSIS = Potential flight of opportunity

  5. 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.

  6. 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.

  7. HIRS

  8. AVHRR

  9. Secondary lobes AMSU

  10. MISALIGMENT HIRS/AVHRR

  11. * 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.

  12. REPARTITION GEOGRAPHIQUE DES OBSERVATIONS ATOVS HIRS

  13. Safety Net 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

  14. 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

  15. Conclusions : * 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.

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