NOAA Product Integrated Validation Dataset (Database)

1. NOAA Product Integrated Validation Dataset(Database) Tony Reale NOAA / NESDIS Office SaTellite Applications and Research (STAR) Bomin Sun and Frank Tilley IMSG Corp., Rockville Md

3. Program Goals • Archive of “traceable” sensor and retrieval products via from multiple data platform (satellite and ground truth) collocated observations • historical (TOVS, DMSP … radiosonde (nwp)) • real-time (ATOVS, AIRS, IASI, GOES, COSMIC … Radiosonde, NWP, GPS, ground radiometers…) • future (NPOESS / GOESR … ) • Unambiguous consistent validation of NOAA satellite derived weather products • Monitoring and evaluation of (satellite) and ground truth platform sensors • Input for “controlled” retrospective products processing (climate) • Synergy with evolving NOAA instrument CAL/Val Programs

4. Historical Collocation Database at STAR (1979-2006) (Per satellite, per year) Raob (PrepBufr … Woolen) NCEP HIRS 1b 1c Collocate … Primary fov … Secondary fov’s Poleward 45 N MSU 1b Raob (screened) Reale / Tilley 1c Global 1c Index Sat-ground Sat-Sat ground-ground SSU 1b ground IGRA NCDC SAT 1c TOVS derived products DMSP (T and I) derived products DMSP (T1,T2 and I)

5. Integrated Cal/Val System (Weng, Cao … Goldberg) http://www.orbit.nesdis.noaa.gov/smcd/spb/calibration/icvs/

6. Radiance P Td T Atmosphere Clouds Surface Radiance Validation at Reference Sites using RTM Satellite Observations Validating Calibration Improving RTM RTM Forward Calculations

7. Integrated Product Validation System System Flowchart Cosmic ATOVS GOES AQUA Metop RAOB Model GPS Any or all of the data sets may be collocated using the information stored within the relational database. Collocated Locations Use locations to produce output data files NetCDF Collocated Data Files NetCDF files include both L1C and L2 products NRT Visualization and Monitoring Distribution

8. NOAA Integrated Product Validation (Real-time phase-1 (Phase-2) ) Radiances 1b,1c from each ATOVS N18 Oper Test MIRS Collocate * derived products … Primary fov … Secondary fov’s Raob (PrepBufr … NMC) derived product files from each Metop (ATOVS) Oper, Test MIRS Eumetsat Raob (screened) Reale / Tilley Flat files (multiple collocation) EDGE (analysis and display) ground Metop (+IASI) NOAA Eumetsat IGRA SAT GPS Indexes (Phase-2) COSMIC GOES Aqua AIRS DMSP ARM … Flat files (net CDF) Per project ( 1999 – present )

9. Collocation Strategy

10. Example of Collocation Record

13. NOAA Integrated Sounding Product Validation System • ATOVS • Metop • NOAA-18 • MIRS • Metop • NOAA-18 PURPOSE: Centralized NOAA protocol for monitoring and validating operational satellite products IMMEDIATE GOALS: 1) Compile integrated multiple data platform datasets of collocated satellite and ground truth observations: ATOVS MIRS GOES Aqua-AIRS COSMIC ATOVS + IASI 2) Provide Analysis Raobs NWP GPS Metop ATOVS (Eumetsat) ATOVS + IASI (NOAA) ATOVS + IASI (Eumetsat) Aqua-AIRS GOES COSMIC

14. Environmental Data Graphical Evaluation (EDGE)

16. C O S M I C … the independent nature of radio occultation soundings make them highly complementary to other atmospheric sounding systems, such as infrared and microwave sounders … Eva Borbas (SSEC), Christian Rocken (UCAR), Jim Yoe (NOAA)

17. The COSMIC Challenge • Truth or Satellite • Spatial / temporal characteristics • 2500 global “refractivity” Profiles daily • well sampled over diurnal cycle • less reliable near surface • Access and Application (L. Cucurull, Ben Ho) • Temp, H20, Refractivity, Bending angle • Upper troposphere moisture, stratospheric temp, tropopause • Other (A. Bilich) • Centerpiece Benchmark Observations • Historical (CHAMP (2001)…)

18. Ground GPS(IPW) • Validate radiosonde moisture • Independent validation of derived satellite moisture profiles • Compliment COSMIC moisture in lower troposphere • Promote availability at all (GCOS reference) radiosonde sites

19. In-situ Observations • Atmospheric Profiling and Clouds • Microwave Radiometer (Column Integrated H20) • Microwave Radiometer Profiler (T, H20 and CLW profiles @ 20-30 and 50-60 GHz) • GVR (183 +/- 1,3,7,14 gHz) • Raman Lidar (H20 Vapor, Cloud, Aerosol) • Radiosonde (Vaisala RS-92, dual humicap) • AERI (RT, Clouds , T, H20 and Trace Gas @ 3 -20 (25) Microns)

20. Other Issues • Strategy for compiling (long-term ) collocation database (for Climate) • Sonde Screening • Sonde not functioning as designed … (Reale / Tilley), • Non-homogeneity … Seidel, Lanzante, Haimberger • Other sources (IGRA, Imke Durre (NCDC) …) • Consensus Reference Water Vapor System (J Facundo) • Long term collocation record useful to characterize: • Sonde and sounder homogeneity record(s) • Homogeneity of calculated (from sonde using RTM) – obs radiance • Sensitivity of sounder measurement to sonde non-homogeneity • Sensitivity of sonde measurement to sounder non-homogeneity • Sounder sensitivity to weather signals • real-time weather scale • climate scale • RT development (resolving sonde and sounder measurements) • (reference networks synchronized to satellite overpass better) • Satellite derived product processing (tuning) and validation • Real-time (nwp) • Retrospective (climate) • Touching base with other collocated observations for climate (ERA-40 …)

22. Spatial gradient in RS 90 radiosonde-retrieval RMS comparison (North Slope of Alaska, 156.6W,71.3N) Q3 flag accepted cases Total Column precipitable water vapor statistics

23. NOAA / GCOS Workshops (Boulder-05, Seattle 06) to define reference network for Climate… Reference Network Mandate: Characterize measurements?Synchronized data? Monitor Climate?

24. Summary • Integrated Validation dataset /database consisting of collocated POES / GOES / Ground Truth compiled routinely by NESDIS • Provides unambiguous sensor / products validation • Inclusion of COSMIC / GPS provide highly reliable accurate atmospheric state parameters • Archive of traceable measurements / products key for climate