NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Estimation of the Ocean Skin Temperature using the NASA GEOS Atmospheric Data Assimilation SystemThis report documents the status of the development of a sea surface temperature (SST) analysis for the Goddard Earth Observing System (GEOS) Version-5 atmospheric data assimilation system (ADAS). Its implementation is part of the steps being taken toward the development of an integrated earth system analysis. Currently, GEOS-ADAS SST is a bulk ocean temperature (from ocean boundary conditions), and is almost identical to the skin sea surface temperature. Here we describe changes to the atmosphere-ocean interface layer of the GEOS-atmospheric general circulation model (AGCM) to include near surface diurnal warming and cool-skin effects. We also added SST relevant Advanced Very High Resolution Radiometer (AVHRR) observations to the GEOS-ADAS observing system. We provide a detailed description of our analysis of these observations, along with the modifications to the interface between the GEOS atmospheric general circulation model, gridpoint statistical interpolation-based atmospheric analysis and the community radiative transfer model. Our experiments (with and without these changes) show improved assimilation of satellite radiance observations. We obtained a closer fit to withheld, in-situ buoys measuring near-surface SST. Evaluation of forecast skill scores corroborate improvements seen in the observation fits. Along with a discussion of our results, we also include directions for future work.
Document ID
20160011513
Acquisition Source
Goddard Space Flight Center
Document Type
Technical Memorandum (TM)
Authors
Koster, Randal D. (NASA Goddard Space Flight Center Greenbelt, MD United States)
Akella, Santha (Science Systems and Applications, Inc. Greenbelt, MD, United States)
Todling, Ricardo (NASA Goddard Space Flight Center Greenbelt, MD United States)
Suarez, Max (Universities Space Research Association Greenbelt, MD, United States)
Date Acquired
September 27, 2016
Publication Date
February 1, 2016
Subject Category
Meteorology And Climatology
Oceanography
Report/Patent Number
GSFC-E-DAA-TN35460
NASA/TM-2016-104606 /Vol. 44
Funding Number(s)
CONTRACT_GRANT: NNG12HP06C
CONTRACT_GRANT: NNG11HP16A
Distribution Limits
Public
Copyright
Public Use Permitted.
Keywords
AGCM
GEOS-5
GEOS-ADAS

Related Records

There are no records associated with this record.
No Preview Available