STAR Sounder Validation Archive

1. STAR Sounder Validation Archive N. R. Nalli, T. Reale, A. Gambacorta, C. Tan, E. Maddy, F. Iturbide-Sanchez, M. Divakarla, X. Xiong, et al. CrIS/ATMSEDR Validation Telecon 10 September 2013 Nalli et al. - STAR Validation Archive

2. Validation Archive • We are currently in the process of building a Validation Archive (VALAR) for S-NPP CrIMSS validation • This archive will serve as a go-to validation archive for the life of the S-NPP CrIMSS mission and directly support development • The base archive is shaping up to consist of the following S-NPP matchup datasets… Nalli et al. - STAR Validation Archive

3. NUCAPS MiRS NPP IDPS GTS (CFSR+GFS) X ? Dedicated + Reference + COSMIC DualReg ECMWF NPROVS 137 IASI (NOAA) AIRS v6 Daily; 7-day delay (NetCDF / HDF5) IASI stamp NUCAPS stamp AIRS stamp IDPS stamp Daily; nrt g r a n u l e s +SDR: CrIS, ATMS, VIIRS, AIRS, MODIS, IASI, AVHRR…

4. Ref/DedDataset and Re-Retrieval ARCHIVE PDISP, NARCS, tbd.pp ( 0-order ) operational Ded / Ref Collocations 7-day delay Append Stamps Re-Retrieve (Single EDR ...) (DualR, 1st order, 2nd…) NUCAPS, IDPS, IASI, … AIRS, (scripts) DualR managed by project Ded / Ref Collocations (+ DualR, ReRet1 …) (project archive) Guides Development Publications PDISP, NARCS, tbd … p Nalli et al. - STAR Validation Archive

5. Datasets (1/3) • High-quality RAOB “anchor points” (dedicated sondes and reference sondes) analogous to NPROVS • Original native ASCII files • Reduced 100 effective layer RTA (i.e., “degraded”) • Merged ECMWF internal “Level 2” formatted files • CrIS/ATMS Granule “stamps” (i.e., 4-scan line granules within +/- 1 minute of overpass, ~500 km radius) • CrIS SDRs, geolocation (HDF5) • ATMS SDRs, TDRs, geolocation (HDF5) • CrIMSS IDPS operational EDRs and CCRs (HDF5) Nalli et al. - STAR Validation Archive

6. Datasets (2/3) • Possible additional “stamps” • (?) AIRS stamps (Eric?) matched up with the S-NPP dedicated RAOBs for Satellite EDR Intercomparisons • Dedicated RAOBs launched for S-NPP have good overlap with AIRS overpasses • (?) VIIRS stamps • Need to identify specific products • Space limitations preclude obtaining “everything,” but the RAOB “anchor points” keep the space requirements relatively manageable Nalli et al. - STAR Validation Archive

7. Datasets (3/3) • Pre-Processing and Re-Retrieval Datasets • NUCAPS Algorithm (Gambacorta, King, Wolf, et al.) • Legacy algorithm, physical retrieval with regression a priori • Original IDPS Algorithm (Iturbide-Sanchez, Divakarla, et al.) • Physical-only algorithm • Dual-Regression Algorithm (Tan, Nalli, Weisz, et al.) • Regression-only algorithm, uses only CrIS radiances, does not use cloud-clearing • NOAA AIRS Algorithm (Maddy) Nalli et al. - STAR Validation Archive

8. A Research Archive… • Forward-thinking,research flexibility • Re-Retrieval capability: Validation ↔ Development • EDR-RAOB matchups based on differing criteria • Allows for, but not constrained by, simple “nearest FOR” • Multiple matchups per RAOB can be obtained; trade-space between sample size, collocation distance, nearest accepted, etc. • Meteorological context in the vicinity of the RAOB, cloudiness/aerosols, precip, etc. • NPROVS+ linkage and standardization • Study of meteorologically interesting conditions and applications (e.g., Saharan dust impact study made possible by AEROSE) • Algorithm Intercomparisons; algorithm development • Dedicated Vaisala RS92 RAOBS can be further processed (GRUAN) to yield “reference dataset” • Tap into ancillary datasets for “retrieval dissections” (e.g, PMRF lidar, AEROSE sunphotometer, M-AERI, ozonesondes, etc.) Nalli et al. - STAR Validation Archive

9. Data Organization (Parent Level) Nalli et al. - STAR Validation Archive

10. Data Organization (Campaign/Site Level) Nalli et al. - STAR Validation Archive