1. Quality Flags: Two separate sets of QFs are provided in IDPS Product: (1) SST QFs; and (2) VIIRS Cloud Mask. Analyses were aimed at identifying a suitable combination. www.star.nesdis.noaa.gov/sod/sst/squam/HR/index_v2.html www.star.nesdis.noaa.gov/sod/sst/squam/HR/index_v2.html Ice Mask: Standard deviation of IDPS VIIRS SST increased in early 2012, when compared against several reference SST fields, which was due to a sub-optimal ice mask. This was identified in SQUAM. Fixes are underway.  Monthly in situ VAL for AVHRR GAC SSTs and PathFinder  Resume L4-SQUAM; add remaining L4-products  Include L3 ARC SSTs  Include standard MODIS SST products (MOD28/MYD28)  Analyses of geostationary satellite SSTs  Analyze correlated error in L2s via “L2-L4” vs. “L2-L4” diagrams for various L2 SSTs SST Quality Monitor (SQUAM) Updates: Progress since GHRSST-13 and Future Work http://www.star.nesdis.noaa.gov/sod/sst/squam/ Prasanjit Dash 1,2, Alexander Ignatov 1, Yury Kihai 1,3 1 NOAA/NESDIS/STAR; 2 Colorado State University-CIRA 3 GST Inc. The SQUAM is a web-based near real-time (NRT) tool to monitor level-2/3 (L2/3) satellite and level-4 (L4) analysis SST products for stability and cross consistency. SQUAM analyzes statistics of departure of target SST (T S ) relative to “reference” SST fields (T R ), including several L4 fields and in situ data. Data stream included in SQUAM since GHRSST-13 are shown in green: Background A. Inclusion of newer satellite SST products (cf., Table 1) B.Quality flags available in IDPS SST data were analyzed and a recommendation was made C.Ice-mask issues with IDPS SST was uncovered, reported and fixed D.Daily in situ validation of ACSPO AVHRR GAC SSTs were implemented (in line with high-resolution products) E.Daily in situ validation of PathFinder (PF) v5 included F.Monthly in situ validation of High Resolution SSTs were implemented (in line with standard practice) This module was affected by STAR move in August 2012; expected to be restored in August 2013. 1. Progress since GHRSST-13 L2- and L3-SQUAM L4-SQUAM New L2 SSTs: VIIRS, Metop-B a) NPP VIIRS (ACSPO) night SST minus OSTIA, 06-Jun-2013 Fig. 1: L2-SQUAM diagnostics for high resolution SST w.r.t. OSTIA. (more analyses at: http://www.star.nesdis.noaa.gov/sod/sst/squam/HR) Fig. 1: L2-SQUAM diagnostics for high resolution SST w.r.t. OSTIA. (more analyses at: http://www.star.nesdis.noaa.gov/sod/sst/squam/HR) b) PDF of a); outliers handled by robust statistics c) “High Res L2 night SST – OSTIA” SST, mean e) Geographical dependence w.r.t. latitude IDPS Cloud & Ice Mask Analyses  A number of new L2 SST products were included in SQUAM: VIIRS (ACSPO, IDPS), and Metop-B (ACSPO GAC and FRAC). Analyses and fixes are underway.  For IDPS SST product, analyses of quality flags were performed and a suitable combination selected. Also, an issue with ice-mask was uncovered using SQUAM.  Daily in situ validations for ACSPO AVHRR GAC and PathFinder v5 were included.  Monthly in situ validation for high resolution SSTs was implemented Future Work Acknowledgments & Disclaimer This work was supported by NESDIS (PSDI, JDE, ORS), JPSS, GOES-R. We thank SST colleagues at NCEP (Bob Grumbine), O&SI SAF (P. LeBorgne), UK Met Office (Matt Martin, Jonah Roberts-Jones, Emma Fiedler), NAVO (Doug May, J-F. Cayula, Bruce McKenzie), NODC (Ken Casey, Deirdre Byrne), U. Miami (Bob Evans, Peter Minnett), ABoM (Helen Beggs), JPL NASA (J. Vazquez, Yi Chao, Mike Chin, & Ed Armstrong) and NESDIS STAR & OSPO) (J. Sapper, F. Xu, XM. Liang, B. Petrenko, J. Stroup, D. Frey, E. Maturi, A. Harris, J. Mittaz) for help and collaboration. The views and findings are those of the authors and should not be construed as an official NOAA or US Government position, policy, or decision. GHRSST XIV Annual meeting 2013, 17-21 June 2013, Woods Hole, MA, USA Prasanjit.Dash@noaa.gov /Tel.: 301-683-3363 or Alex.Ignatov@noaa.gov / Tel.: 301-683-3379Prasanjit.Dash@noaa.govAlex.Ignatov@noaa.gov Summary L2- and L3- SQUAM: (L2 – L4) L4-SQUAM: (L4 – L4) ** Reynolds (AVHRR; AVHRR+AMSR-E*) RTG (high, low) NAVO K10 POES GOES Blended NASA JPL: 1km G1SST, 1km MUR OSTIA (real-time, reanalyzed) CMC0.2° (real-time; RAN ongoing ) GAMSSA, ODYSSEA GMPE *AMSR-E discontinued in 2011 +pending inclusion of RSS, NCODA GAC (Global Area Coverage) GAC (Global Area Coverage) NESDIS heritage Main Unit Task(MUT) (Ref: L4, insitu) NESDIS heritage Main Unit Task(MUT) (Ref: L4, insitu) NAVO SEATEMP (Ref:L4, insitu) NAVO SEATEMP (Ref:L4, insitu) High Res (HR) (AVHHR/MODIS/VIIRS) High Res (HR) (AVHHR/MODIS/VIIRS) NESDIS ACSPO (Ref: L4, insitu): Metop-A, NPP VIIRS, Metop-B, Terra/Aqua MODIS NESDIS ACSPO (Ref: L4, insitu): Metop-A, NPP VIIRS, Metop-B, Terra/Aqua MODIS EUMETSAT O&SI SAF (Ref: L4, insitu): EUMETSAT O&SI SAF (Ref: L4, insitu): L2 (LEO) L3 (LEO) PathFinder v5.0 (Ref: L4, in situ): (A)ATSR [ ESA CCI ARC] (ongoing) PathFinder v5.0 (Ref: L4, in situ): (A)ATSR [ ESA CCI ARC] (ongoing) Bulk Foundation Ensemble JPSS IDPS VIIRS (Ref: L4, insitu): JPSS IDPS VIIRS (Ref: L4, insitu): Table 1: Sea surface temperature (SST) products monitored in SQUAM **SQUAM was affected due to the STAR move from Camp Springs, MD to College Park, MD in August 2012. SQUAM functionality has now been fully restored along with newer additions;. The only exceptions is L4-SQUAM which is expected to be restored in August 2013. NESDIS ACSPO (Ref: L4, insitu) - NOAA16-19,Metop-A,Metop-B -Insitu val for all platforms -Analyses of reprocessed GAC NESDIS ACSPO (Ref: L4, insitu) - NOAA16-19,Metop-A,Metop-B -Insitu val for all platforms -Analyses of reprocessed GAC d) “High Res L2 night SST – OSTIA” SST, std dev f) Geophysical dependence w.r.t. total column water “IDPS VIIRS minus OSTIA”, Mar-20-2012 Condition #1 'High Quality' Condition #8 'Confidently clear‘ (recommended) Monthly VAL wrt. iQuam in situ SST Fig. 3: Daily vs. Monthly in situ validation of high resolution SSTs OSI SAF Metop-A SST minus Drifters, Night Daily (31-May-2013) Monthly (May-2013) Fig. 2: Ice-mask issue in IDPS VIIRS detected from std. dev of SSTs wrt. OSTIA Increasing std dev in IDPS SST GAC: www.star.nesdis.noaa.gov/sod/sst/squam/ACSPOGAC PathFinder: www.star.nesdis.noaa.gov/sod/sst/squam/PF/ AVHRR GAC & PF Daily in situ VAL Fig. 2: Analyses of IDPS quality flags for performance and coverage