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Satellite Products in the NPP Era

Satellite Products in the NPP Era. John M. Haas, The Aerospace Corporation. NPOESS/NPP Data Products. Raw Data Records (RDRs) Similar to Level 1A for CEOS/NASA. ~ 150 giga bytes per day (similar to Terra or Aqua). Sensor Data Records (SDRs) Similar to CEOS/NASA Level 1B.

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Satellite Products in the NPP Era

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  1. Satellite Products in the NPP Era John M. Haas, The Aerospace Corporation

  2. NPOESS/NPP Data Products Raw Data Records (RDRs) • Similar to Level 1A for CEOS/NASA. • ~ 150 giga bytes per day (similar to Terra or Aqua). Sensor Data Records (SDRs) • Similar to CEOS/NASA Level 1B Environmental Data Records (EDRs) • Similar to CEOS/NASA Level 2. • NPP Provides 25 of 55 NPOESS EDRs. 12 Mbps 3 Mbps CrIS/ATMS APS CMIS VIIRS SES GPSOS ERBS TSIS ALT OMPS Flight on NPP Flight on NPOESS

  3. NPP Overview - Instruments(1 of 2) VIIRS CrIS • Purpose: Land, ocean, atmospheric parameters at high temporal resolution • Precursors: AVHRR, OLS, MODIS, SeaWiFS • Developer: Raytheon • Approach: Multi-spectral scanning radiometer, 3000 km swath width • TRL: 6.5 • Purpose:Temperature and moisture profiles at high temporal resolution • Precursors:HIRS, AIRS, IASI • Developer: ITT • Approach:Michelson interferometer, 2300 km swath width. Co-registered with ATMS • TRL: 6.5

  4. NPP Overview - Instruments(2 of 2) OMPS ATMS • Purpose:Temperature and moisture profiles at high temporal resolution • Precursors:AMSU, MHS • Developer: Northrop Grumman • Approach:Scanning passive microwave radiometer, 2300 km swath width. Co-registered with CrIS. • TRL: 6.5 • Purpose: Monitors total column, vertical ozone profile • Precursors: TOMS, SBUV, GOME, OSIRIS, SCHIAMACHY, OMI • Developer: Ball • Approach: Nadir and limb push broom CCD spectrometers, 2600 km swath width • TRL: 6.5

  5. Imager Comparison Capability AVHRR OLS VIIRS Imagery Resolution (km) 1-7 0.5-1.1 <0.4-0.8 # of Channels 6 3 >15 Low Light Visible No Yes Yes Ocean Color No No Yes Radiometric Performance 0.12 NA 0.05

  6. VIIRS Dramatically Improves Edge-of-Scan (EOS) Imagery AVHRR Channel 1 Nadir VIIRS Band M5 Nadir VIIRS Band I1 Nadir Nadir AVHRR Channel 1 EOS VIIRS Band M5 EOS VIIRS Band I1 EOS Edge of Scan

  7. Multi-spectral Cloud Imaging VIIRS

  8. Sea Surface Temperature and Vegetation Index (MODIS)

  9. Nighttime Imagery DMSP

  10. Ocean Color Bahamas MODIS

  11. Cyclone Hudah MODIS

  12. Comparison of CrIS and HIRS • Number of Channels • HIRS – 20 • CrIS – 1300 • Sensor parameters HIRSCrIS Scan type Step and dwell Step and dwell FOVs/Scan 56 steps 30 FOVs of 3x3 each IFOR 1.3 x 1.3° 3.3 x 3.3 ° IFOV size at Nadir 10 km 14 km Sampling at Nadir 26 km 16 km Pixel/scan (FOVs x steps) 56 270 Swath + 49.5° + 48 1/3° each side of Nadir

  13. Improved Sounders Hyper-spectral infrared sounders, (e.g CrIS), will greatly improve the information content of atmospheric parameters such as moisture. Below is a comparison of moisture weighting functions from the current operational sounders and future advanced infrared sounders More and sharper weighting functions result in much improved accuracy

  14. Improved Vertical Resolution and Accuracy of Soundings CrIS EDR performance corresponding to the Temperature and Moisture Profile animations for 11 sequential 6 hours forecasts beginning on February 5, 1993 at 0600Z Simulated Comparison of CrIS and HIRS Retrievals to Truth Truth CrIS HIRS

  15. Monitoring Ozone - OMPS

  16. Summary • NPOESS will produce 26 EDRs in the NPP era • Products will focus on Imagery, atmospheric profiles, clouds and Ozone • Products will be available from NOAA and NASA once approved • Data will be broadcast real time in X band • NPP will bridge the gap between current systems and NPOESS • Opportunity to see the data early • Opportunity to begin to exploit the data early

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