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CALIBRATION AND RE-PROCESSING STATUS

CALIBRATION AND RE-PROCESSING STATUS. Calibration Status VIS will be completed in September IR will be completed in October Microwave ready back to 98, earlier ??? Re-processing Sequence: Ancillary will be completed in September ISCCP/GPCP will start in November SRB will start in January

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CALIBRATION AND RE-PROCESSING STATUS

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  1. CALIBRATION ANDRE-PROCESSING STATUS • Calibration Status • VIS will be completed in September • IR will be completed in October • Microwave ready back to 98, earlier ??? • Re-processing Sequence: Ancillary will be completed in September ISCCP/GPCP will start in November SRB will start in January SeaFlux & LandFlux will start in March

  2. VIS CAL Evaluation Summary AVHRR vs MODIS & NOAA Cal ISCCP Biased LOW by ≤ 3%, RMS ≤ 4% (Except NOAA-17 at 8% & 9%) Afternoon Satellites Generally Agree Some Degradation Trends Need to be Adjusted (NOAA-7 & 17 but NOT NOAA-9 or 18) Some Re-evaluations of Degradation Record (Especially Morning Satellites, NOAA-10 & 12)

  3. COMPARISONS TO NOAA-9 and NOAA-18

  4. RE-EVALUATIONS

  5. RE-EVALUATIONS

  6. VIS CAL Evaluation Summary MODIS-DCC Calibration of 12 Geos – Gain ISCCP Biased LOW by 2-4%, RMS 2-4% ISCCP Results Noisier than Doelling Results A Few Degradation Trend Differences Some “Local” Discrepancies

  7. VIS CAL Evaluation Summary Overall Evaluation of Accuracy: About 3% “ABSOLUTE” BUT What is Uncertainty of Moon? What is Uncertainty of MODIS? What is Uncertainty of Earth Targets?

  8. Common Data Format • 1 Degree Equal-Area Mapping (0,0 is corner) • 3 hr 1 day Time intervals (lowest common?) • (month/year) file names • Binary – Byte Coding • reserved missing data code • Fixed Variable Arrays • Area statistics and joint histograms • netCDF4 format

  9. ISCCP Status Overview • Processing • D-Version Completed: July 1983 – December 2009 (26.5 yr) • B1 Deliveries up to date • Calibration Finished thru December 2009 (SCC ends 2011) • Revisions • Cloud Detection Algorithm Finished for B1U w polar revision • Cloud Retrieval Revisions Finished (still testing) except for aerosols & land reflectance • Re-engineering • Code Modernized, Adapted to B1U/GAC & Ported • NCDC has run complete version • Still have to Revise Ancillary Inputs • New Products (H-Version) Designed

  10. VIS Monitor PM Orbiters MODIS POINT Estimated Relative Uncertainty

  11. FINAL ISCCP D-VERSION CLIMATOLOGY TAU = 3.9 CA = 66.3% PC = 572 mb TC = 261.6K

  12. FINAL ISCCP D-VERSION CLIMATOLOGY RS = 0.14 TS = 288.7K

  13. NEW DATA PRODUCTS • B1U Radiances • ANCILLARY: Lnd/Wtr Mask & Topography, Landcover, Ozone, Merged Snow-Ice, Atmospheric Temperature & Humidity • HXS: high-res, pixel (10 km), single-satellite (like old DX) • HXG: high-res, pixel, global (global-DX reduced to common variables, in netCDF) • All gridded products in netCDF • HGS: high-res, gridded (1°), single-satellite (DS-plus) • HGG: high-res, gridded, global (like old D1, merged DS) • HGH: high-res, gridded, hourly-monthly mean (like old D2) • HGM: high-res, gridded, monthly-mean (like old D3) • FHRadiative Flux Products (INPUT, PROF, TOA, SRF, MON)

  14. Remaining Tasks & Re-Processing Plan • IR calibration and/or revise spectral treatment • Testing whole system • Reviewing whole record for small glitches -- QC development • Re-processing plan: • Start with 2009 incorporating FY-2C/E • Re-process in reverse chronological order • Process 2010 incorporating Brazil-GOES as soon as Calibration Ready • Finish whole record adding 2011 • Replace/revise VIS calibration procedures – after start

  15. JOINT PRODUCT DESIGN& SUGGESTED USES • Joint Product Design (List Contents -- Handout) • Suggested Uses • Characterize Exchanges (and imbalances) for • Forced Variability (diurnal, seasonal) • Weather-scale Variability (aka Internal Modes, convective, baroclinic) • Slow modes (MJO, interannual, ENSO, etc) • Generation of APE • E&W Transports & their Variations • Exchange Process Studies

  16. POLAR PRIORITIES • Sea Ice Surface Temperature • Better Atmospheric Temperature Profiles • Precipitation • Cloud Vertical Structure

  17. SUGGESTED MODEL DIAGNOSTICS • Distributions of diabatic heating • Composite Weather State Variation Statistics • Forced Modes: Amplitude & Phase • Internal Modes: Variance with Space-Time Scales • Slow Modes: Frequencies of Occurrence, Geographic Patterns, Amplitude Distributions

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