- NASA Aquarius Mission

Ocean Modeling and Data Analysis Working Group Discussion 10:50-­‐12:20 July 21, 2010 Sea<le, Washington, USA Charge •  Coordinate efforts and develop methods to exploit Aquarius SSS to study ocean variability and air-­‐sea interacIons using data analysis and ocean models Working Group Tasks and Topics -­‐-­‐-­‐ 3 Phases -­‐-­‐-­‐ •  Phase 1: Pre-­‐launch –  Launch •  Phase 2: In Orbit Checkout (IOC), Launch + 45 days –  Post Launch Assessment Review (PLAR) •  Phase 3: IOC + 6 months –  Science team meeIng “Ocean Modeling and Data Analysis” Working Group Chair: Yi Chao [[email protected]] Arnold Gordon [[email protected]] Frank Bryan [[email protected]] Bill Large [[email protected]] Fred Bingham [[email protected]] Alberto Piola [[email protected]] Raul Guerrero [[email protected]] Rui Ponte [[email protected]] Ichiro Fukumori [[email protected]] Nikolai Maximenko [[email protected]] Tony Busalacchi [[email protected]] Gary Lagerloef [[email protected]] Steve Riser [[email protected]] Tangdong Qu [[email protected]] Rong Zhang [[email protected]] Hsun-­‐Ying Kao [[email protected]] Gene Feldman [[email protected]] Frank Wentz [[email protected]] Claudia Giulivi [[email protected]] Eric Hackert [[email protected]] Samuelraj Daniel Jacob [[email protected]] Nadya Vinogradova [[email protected]] James Potemra [[email protected]] Oleg Melnichenko [[email protected]] How would you like to communicate beyond emails? •  Aquarius/SAC-­‐D InformaIon and Discussion Forum –  h<p://aquarius.gsfc.nasa.gov/forum/aquarius/
forum_show.pl •  LimitaIons: –  No documents (.doc, .ppt) –  No images (.gif) –  No group mailing/broadcasIng •  Other tools: Google Doc, Google Group •  Other ideas…please email [email protected] Phase 1: Pre-­‐launch, Now to April 2011 •  Assigned Task: To idenIfy, assess and recommend a near real-­‐Ime data set for SSS (SST, surface vector wind, waves) to be used by the Aquarius simulator •  The data need to have the following characterisIcs –  Global –  Accessible in a public domain –  Available in near real-­‐Ime (similar to IGDR SSH data with a latency no more than a week) –  Reasonable performance comparing with the observaIonal data available •  Web space: h<p://ourocean.jpl.nasa.gov/SSS/ (sandbox to assess data quality before recommending to Aquarius at GSFC/ESR) GHRSST: Monthly OSTIA minus NCEP OIv2 GHRSST: Daily SST error for G1SST SST Task working with GHRSST •  Is the current NCEP Reynolds SST the best for Aquarius? •  If not, which GHRSST L4 products can be considered as the alternaIve/backup data set? •  Who: If you would like to help, please email [email protected] Proposed SSS: 1/12 deg HYCOM •  HYbrid Coordinate Ocean Model (HYCOM) •  VerIcal coordinate –  Isopycnal in the open straIfied ocean –  Terrain-­‐following in shallow coastal regions, and –  Z-­‐level (depth) near the surface mixed layer •  1/12° Global & 32 layers •  Navy OperaIonal Global Atmospheric PredicIon System (NOGAPS) •  Navy Coupled Ocean Data AssimilaIon (NCODA) SSS from 1/12 deg HYCOM Subsurface Salinity from 1/12 deg HYCOM 0, 250, 500, 1000 meters SSS Simulated by Models • 
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HYCOM Other U.S. Navy models: NCOM, NLOM Mercator Ocean ECCO (JPL, Hamburg) Reanalysis: SODA, POP IPCC climate models CCMAT47 20th Century CMIP3 Simulated Mean Ocean Surface Salinity CCMAT63 CNRM CSIRO GDFL20 MEAN IAP BCCR IPSL MIROCHR MIROCMR MRI NCAR UKMOCM3 GISSEH GISSER Waliser, Chao, Li, et al., 2010, In Prep (10^-­‐3) 20th Century CMIP3 Simulated Standard DeviaIon of Monthly Ocean Surface Salinity CCMAT47 CCMAT63 Anomalies are about the Annual Cycle CNRM CSIRO GDFL20 STD IAP BCCR IPSL MIROCHR MIROCMR MRI NCAR UKMOCM3 GISSEH GISSER (10^-­‐3) Waliser, Chao, Li, et al., 2010, In Prep Argo 2005 Salinity Mean WOA2005 Salinity Mean Argo 2005 Salinity STD WOA2005 Salinity STD Phase 1: Pre-­‐launch, Now to April 2011 •  Assigned Task: To idenIfy, assess and recommend a near real-­‐Ime data set for SSS (SST, surface vector wind, waves) to be used by the Aquarius simulator •  The SSS data need to have the following characterisIcs –  Global –  Accessible in a public domain –  Available in near real-­‐Ime (similar to IGDR SSH data with a latency no more than a week) –  Reasonable performance comparing with the observaIonal data available NCEP is used today; What about NOGAPS? Who: If you would like to help, please email [email protected] What: in situ data; comparisons; staIsIcs; what else? WW3: SWH, MSS(x, y) Who: If you would like to help, please email [email protected] What: in situ data; comparisons; staIsIcs; what else? In Orbit Checkout (IOC): Launch + 45 days Post Launch Assessment Review (PLAR) •  First…Aquarius… –  First Aquarius SSS weekly map (L3a) –  First SSS 7-­‐10 days map merging Aquarius with Argo+driser+ships+moorings (L3b) –  First SSS 7-­‐10 days map merging Aquarius with Argo+driser+ships+moorings and SMOS (L3c) –  First assimilated SSS maps from ??? models (L4) •  Data analysis and model results from YOU Fred Bingham UNCW •  Important pre-­‐ and post-­‐ launch acIviIes: -­‐ Pre-­‐launch, determine spaIal staIsIcs from the model and from in situ data, decorrelaIon scales, variances, coefficients of variaIon, anisotropy, etc. -­‐ Post-­‐launch, compare model and in situ staIsIcs with those from Aquarius to the extent possible given the differing sampling scales. Steve Riser UW ΔT ΔS 6/24/2009 - 7/15/2009
Upper 5 m; Δt ∼ 2 hr; 0-150 m
• ΔT and ΔS near the surface
relative to values at 15 dbar
Example of UW float equipped with STS sampling
Rainfall (mm/hr) and Wind Speed (m/sec) • Wind Speed Rainfall Wind speed and rainfall from UW float 6916 near HOT (STS-­‐equipped) •• •
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• • • • • • • • • • • • • • Deployments of STS-­‐equipped Profiling Floats Through 7/19/2010 SpaIo-­‐Temporal Variability and Error Structure of Sea Surface Salinity in the Tropics A.Busalacchi – ESSIC Co-­‐Is: G. Alory CNAP/Legos (Toulouse, France), P.A. Arkin – CICS/ESSIC, J. Ballabrera-­‐Poy – ICM/
CSIC (Barcelona, Spain), T. Delcroix – IRD/LEGOS (Toulouse, France), E. Hackert -­‐ ESSIC, J. Janowiak – CICS/ESSIC, R. Murtugudde -­‐ ESSIC, M. Sapiano – CSU/Dept. Atmos. Sc., R.H. Zhang -­‐ ESSIC Project Goals •  Determine SSS error fields over tropical oceans •  IdenIfy SSS standard deviaIon, decorrelaIon scales, representaIvity error (RE) and signal to noise raIos (SNR) •  In addiIon to these project goals of calculaIng SSS error fields we plan to address the following scienIfic quesIons 1.  Can Aquarius SSS lead to be<er esImates of verIcal salinity profiles? 2.  Can SSS be validated using satellite esImates of precipitaIon, evaporaIon, and other ancillary data? Phase 3: IOC + 6 months Science Team Meejng aker launch •  More Data analysis and model results from YOU •  Special journal issues