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4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf
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4 Nalli-Barnet-Zhou-etal oral - JPSS EDR Val - IGARSS Jul-2011 v1.pdf

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  • 1. Joint Polar Satellite System (JPSS) Environmental Data Record Validation Program for the NPP Cross-track Infrared Microwave Sounding Suite (CrIMSS) Nicholas R. Nalli,1,2 Christopher D. Barnet,1 Lihang Zhou,*1,3 Murty Divakarla,1,4 and Degui Gu5 *Presented by Lihang Zhou 1 NOAA/NESDIS/STAR, Camp Springs, Maryland, USA 2 DellServices, Federal Government, Inc., Fairfax, Virginia, USA 3 JPSS Office, Silver Spring, Maryland, USA 4 I.M. Systems Group, Inc. 5 Northrop Grumman Aerospace Systems (NGAS), Redondo Beach, CA, USA
  • 2. With contributions from… • G. Guo (NOAA/NESDIS/STAR) • X. Liu, S. Kizer (NASA/LaRC) • B. Blackwell (MIT) • H. Kilcoyne and J. Feeley (JPSS Office) July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 2
  • 3. Outline • CrIMSS (CrIS/ATMS) EDR Product Overview • Cal/Val Program Status – Overview – Team Members (roles and responsibilities “for the record”) – JPSS CrIMSS Cal/Val Phases – Current (Pre-Launch Phase) Efforts July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 3
  • 4. CrIMSS EDR PRODUCT OVERVIEWJuly 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 4
  • 5. Atmospheric Vertical Temperature Profile (AVTP)• EDR used for initialization of high- resolution NWP models, atmospheric stability, basic science research, etc.• Non-precipitating scenes• Key Performance Parameter (KPP) for lower tropospheric CrIMSS AVTP EDR retrieved from SDR Proxy Data temperature Acknowledgment to SOAT Members G. Guo, X. Liu, S. Kizer, and B. Blackwell July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 5
  • 6. Atmospheric Vertical Moisture Profile (AVMP)• EDR used for initialization of high- resolution NWP models, atmospheric stability, basic science research, etc.• Non-precipitating scenes• Key Performance Parameter (KPP) for lower tropospheric CrIMSS AVMP EDR retrieved from SDR Proxy Data water vapor Acknowledgment to SOAT Members G. Guo, X. Liu, S. Kizer, and B. Blackwell July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 6
  • 7. Atmospheric Vertical Pressure Profile (AVPP);Trace Gas IP and P3I CrIMSS O3 IP retrieved from SDR Proxy Data• AVPP is an EDR derived Acknowledgement to SOAT Members G. Guo, X. Liu, S. Kizer, B. Blackwell from AVTP and AVMP that requires validation.• Trace gas retrievals from sounders are desirable for basic science – O3 is an intermediate product (IP) necessary for optimal EDR retrieval Specification Performance Requirements – CO and CH4 are Parameter IORD-II NGAS SY15-0007 experimental (P3I) Pressure Profile 4 hPa threshold, 2 hPa 3 hPa (with precip and products (not funded goal Psurf error exclusions) within cal/val CH4 (methane) column 1% precision, 5% n/a program) accuracy CO (carbon monoxide) 3% precision, 5% n/a column accuracy July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 7
  • 8. CrIMSS EDR CAL/VAL PROGRAM STATUSJuly 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 8
  • 9. Cal/Val Program Overview • The NPP CrIMSS EDR Validation Program is to ensure the data products comply with the requirements of the sponsoring agencies, drawing on lessons learned from validating the AIRS/AMSU and IASI/AMSU/MHS sounding systems. – Using datasets proven valuable for global validation for AIRS (ECMWF, NCEP/GFS, RAOBs, etc) – Team of Subject Matter Experts (SMEs) from both user and science communities to leverage heritage knowledge, experience and tools as well as assure understanding of customer mission success – Leverage existing capabilities wherever possible • Operational real-time systems (ATOVS, GOES) • AIRS and IASI processing and validation systems • Routine AIRS and IASI instrument monitoring and characterization • Intensive field campaign (aircraft sensor) cal/val experience • To determine whether the EDRs have met their global performance specifications, a “roll-up” of regional assessments is envisioned. – Typical validation methods characterize the performance of the EDRs in various ensembles of cases. – Specifically, this will involve stratifying the specs according to various bins: • day/night • latitude bands (i.e., polar, midlatitude, tropical) • land/ocean/ regional • (possibly) altitude and surface characteristics • Assessments will also be performed against current capabilities using heritage sensors and algorithms – Hyperspectral AIRS and IASI systems (well established comparable products) – ATOVS (HIRS/AMSU) operational products to demonstrate the value of the hyperspectral measurements to the user community July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 9
  • 10. Team Members – Roles & Responsibilities (1/3) NOAA Team MembersEDR Name Organization Funding Agency TaskLead Chris Barnet NOAA/NESDIS/ JPSS Lead CrIS/ATMS STAR EDR TeamAVTP/AVMP Changyong Cao NOAA/NESDIS/ JPSS Coordination w/ STAR GSICSAVTP/AVMP Mitch Goldberg NOAA/NESDIS/ JPSS & NOAA-PSDI NGAS-code, STAR NUCAPSAVTP/AVMP Anthony Reale NOAA/NESDIR/ JPSS NPROVS STARCrIMSS SDR John Derber NOAA/NCEP JPSS NWP ingestAVTP/AVMP Fuzhong Weng NOAA/NESDIS/ NOAA-PSDI MiRS STARCrIMSS SDR Yong Han NOAA/NESDIS/ JPSS CrIS SDR STARCrIMSS SDR Tsan Mo NOAA/NESDIS/ JPSS ATMS SDR July 2011 STAR Nalli, Barnet, Zhou, et al. - IGARSS-11 10
  • 11. Team Members – Roles & Responsibilities (2/3) NOAA-External Team MembersEDR Name Organization Funding Agency TaskCriMSS SDR Gail Bingham USU/SDL JPSS CrIS/ATMS SDRAVTP/AVMP Bill Blackwell MIT JPSS Microwave productsAVTP/AVMP Allan Larar NASA/LaRC JPSS EDR ValidationAVTP/AVMP Xu Liu NASA/LaRC JPSS IASI proxy, EDR validationAVTP/AVMP Hank SSEC JPSS SDR, PEATE RevercombAVTP/AVMP Dave Tobin SSEC JPSS ARM-RAOBSAVTP/AVMP Larrabee Strow UMBC JPSS OSS validationAVTP/AVMP Joel Susskind NASA/GSFC JPSS AIRS proxy July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 11
  • 12. Team Members – Roles & Responsibilities (3/3) NOAA-External Team MembersEDR Name Organization Funding Agency TaskCrIMSS SDR Steven Beck Aerospace Corp. external RAOB,LIDARCrIMSS SDR Steven English UKMET external UKMET analysisCrIMSS SDR William Bell ECMWF external ECMWF analysisAVTP/AVMP Steve Friedman NASA/JPL NASA Sounder PEATEAVTP/AVMP Denise Hagan NGAS NG Prime EDRCrIMSS SDR Degui Gu Validation/SDR coordination July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 12
  • 13. Cal/Val Phases • Pre-Launch • Early Orbit Checkout (EOC) – L + 90 days, as sensors are activated • Intensive Cal/Val (ICV) – Stable SDR out to L + 24 months • Long-Term Monitoring (LTM) – From end of ICV (L + 24 months) to the end of operational lifetime – Characterization of all EDR products and long-term demonstration of performance July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 13
  • 14. EDR Validation Activities by Phase (1/2)Pre-Launch – Early Orbit Checkout • Pre-launch – Global synthetic datasets • Tests algorithm for theoretical robustness – self-consistent temperature, moisture, ozone, and cloud water profiles are “controlled” • Simulated for a wide range of environmental scenes, including seasonal, diurnal, spatial variability, and actual sensor scanning geometry including FOV rotation – Proxy datasets • Data derived from real measurements from existing satellite systems with similar specs (here AIRS/AMSU and IASI/AMSU) • Used to test concepts and exercise CrIMSS algorithm ; support launch readiness (functionality of the code, develop methods of empirical bias correction) and porting of algorithms • Aqua/AIRS has advantage of having 9 IR FOVs and 01:30 orbit • METOP/IASI has advantage of direct IR radiance spectral transform and MHS channels • Early Orbit Checkout – Model comparisons • Useful at first light and for long-term monitoring – Similar to AIRS science team activities using ECMWF and NCEP/GFS – Compare forward models, sanity checks on “obs − calc” – Simultaneous nadir overpass and double differencing of radiances. • Methods are becoming mature, high level of confidence from AIRS/IASI work. – Inter-compare with operational AIRS and/or IASI products. • Initially (first light) use off-line versions of CrIMSS products. – Even if retrievals are poor, having geophysical state and diagnostics can help identify problems. • Useful to identify and mitigate issues with the NGAS EDRs – PCA analysis of noise characteristics and instrument monitoring. • Can be used to verify instrument noise, random and systematic components. • Can be used to monitor instrument health. July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 14
  • 15. EDR Validation Activities by Phase (2/2)Intensive Cal/Val – Long-Term Monitoring • Operational RAOBs – Useful for long-term characterization and global latitude representation. After couple months should begin to have significant statistics. – Tony Reale’s NOAA Products Validation System (NPROVS) • Dedicated RAOBs – Useful for regional characterization. – Will take many months (years?) to accumulate enough statistics. – Need site support and funding for large number of RAOBs. – Ideally coordination through GCOS Reference Upper Air Network (GRUAN) • Intensive Field Campaigns (e.g., Tobin et al. 2006, JGR, 111; Taylor et al. 2008, BAMS, 89; Blackwell et al. 2001, TGARS, 39) – Useful for SDR cal/val; state specification for thorough “cal/val dissection”. – Will attempt coordination with other cal/val leads (e.g., VIIRS clouds). – Scientific campaigns of opportunity • Low cost, low risk; has advantage of exploiting scientific participation; crude “dress- rehearsal” • NOAA Aerosols and Ocean Science Expeditions (AEROSE) (Nalli et al. 2011, BAMS), linkage to GOES-R program July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 15
  • 16. Current Pre-Launch Phase Efforts (1/2) Ocean-only Cloud_Cleared (Divakarla, 2011)• The SOAT is preparing for NPP AVTP- RMSD (K) AVMP RMSD (%) launch with proxy datasets and methods of evaluation – Working toward launch readiness Figures courtesy of SOAT team effort: G. Guo, X. Liu, S. Kizer,• Proxy Data Package for 19 Oct 07 B. Blackwell _____ IASI (IR) -------- CrIMSS (IR+MW) _____ IASI(MW) -------- CrIMSS(MW-Only) “Focus Day” generated by SOAT Retrieved Total Precipitable Water (cm) – Granules 139-142. (Divakarla et al., 2011) (LaRC, MIT, NASA, and NOAA) IASI CrIMSS ECMWF – CrIMSS EDR algorithm has demonstrated good convergence – Have obtained initial estimates of OSS RTM biases – Statistics of AVTP and AVMP differences ECMWF analysis show reasonable and encouraging performance The Google-Earth Pro interface used to display CrIMSS/IASI EDRs (and SDRs) offers a very powerful method to evaluate EDRs qualitatively at the retrieval Field of Regard (FOR) resolution. Many EDR products (AVTP, AVMP, Total O3 etc.) can be cross-checked with this interface and has potential Location of Granules for many near real-time applications in the future. 139-142 July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 16
  • 17. Current Pre-Launch Phase Efforts (2/2) RAOB • NOAA AEROSE Campaigns (Nalli et al. 2011) – Pre-launch test of deployment of scientific validation campaigns of opportunity. – Ship-based dedicated RAOB (PTU, z, wind, O3) over open ocean. – Region is of scientific interest germane to the CrIMSS mission. • Saharan air layer (SAL) and tropical cyclogenesis • Dust and biomass burning NOAA Unique IASI Product aerosols • Tropospheric ozone dynamics • AEROSE 2010 is being used as a field campaign proxy dataset • AEROSE 2011 is currently underway! July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 17
  • 18. Summary• The status of the NPP CrIMSS EDR Validation Program was overviewed in this presentation. The validation program is to ensure the data products comply with the requirements of the sponsoring agencies. JPSS specifications for the AVTP, AVMP and AVPP EDR products will replace IORD/NGAS specs.• To demonstrate launch readiness, pre-launch Cal/Val efforts are currently ongoing including the development of “proxy datasets,” focus days, intensive campaigns-of-opportunity, and initial tests of the IDPS EDR algorithm.July 2011 Nalli, Barnet, Zhou, et al. - IGARSS-11 18

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