[Personnel: Last_Name='RITZ', Middle_Name='A.', First_Name='SCOTT']
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Version 2 Goddard Satellite-Based Surface Turbulent Fluxes (GSSTF) Data Entry ID: GES_DISC_GISSTF_V002 |
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Summary
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Abstract:
[Source: NASA GES-DISC, ftp://disc2.nascom.nasa.gov/data/TRMM/Ancillary/gsstf/gsstf2.0/gsstf2_doc ] The data set is referred to as the "GSSTF 2.0 Global Ocean Gridded Data Set." GSSTF stands for Goddard Satellite-Based Surface Turbulent Fluxes. The data set currently contains a suite of 3 products. The first two products provide (i) daily and (ii) monthly-mean, global ocean 1-degree latitude by 1-degree longitude gridded values of surface fluxes and some related quantities based mainly on SSM/I data (Special Sensor Microwave/ Imager; onboard F8, F10, F11, F13, and F14 satellites) over the 13.5-year period of July 1987 through December 2000. Note that monthly-mean data were produced using at least 10 available daily values. The third product provides (iii) the 1988-2000 monthly-mean and annual-mean climatology data for the same parameters. The monthly-mean climatology data were produced using the interpolated (grids with missing value being interpolated from their neighboring 8 grids by a distance weight) individual monthly-mean data. An aggressive interpolation scheme was used, with newly-interpolated grid boxes serving as input for filling in additional grid boxes, in order to maximize the number of grid boxes with data. The climatology files thus have more grid boxes with non-missing data values than the individual monthly and daily files. The annual-mean climatology was then generated based on those 12 monthly-mean climatologies. The daily, monthly-mean, and annual- and monthly-mean climatology products all include eight variables: (1) "E" : latent heat flux (W/m**2), (2) "STu": zonal wind stress (N/m**2), (3) "STv": meridional wind stress (N/m**2), (4) "H" : sensible heat flux (W/m**2), (5) "Q" : surface air (~10-m) specific humidity (g/kg), (6) "WB" : lowest 500-m precipitable water (g/cm**2), (7) "U" : 10-m wind speed (m/s), (8) "DQ" : sea-air humidity difference (g/kg). WB is retrieved from the SSM/I radiances using the method of Schulz et al. (1993), while U is an SSM/I product derived by Wentz (1997). Q is derived from WB and water vapor amount in the entire atmospheric column of Wentz (1997) using the method developed by Chou et al. (1995, 1997). DQ is derived from Q and sea surface temperature (SST) of the NCEP reanalysis (Kalnay et al. 1996), including a 2% reduction in saturation specific humidity at SST due to salinity effect. The turbulent fluxes (wind stress, E, and H) are then computed from U, DQ, and sea-air temperature difference of NCEP reanalysis based on surface layer similarity (Chou 1993; with the flux-profile relationships of Dyer (1974) but changing the von Karman constant from 0.41 to 0.4). Wind stress direction is taken from 10-m wind direction derived from SSM/I 10-m wind speed (Wentz 1997), 10-m wind field of NCEP reanalysis, and wind measurements from ships and buoys (see Atlas et al. 1996) produced at NASA GMAO by Atlas' group. The main refereed citation for the data set is Chou et al. (2003) (all references are listed in section 10). |
Related URL
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Link:
GET DATA
Link: VIEW EXTENDED METADATA Link: VIEW PROJECT HOME PAGE Description: Documentation related to the GSSTF2 reprocessing. |
Geographic Coverage
| N: 90.0 | S: -90.0 | E: 180.0 | W: -180.0 |
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Data Set Citation
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Dataset Originator/Creator:
S.-H. Chou, E.J. Nelkin, J. Ardizzone, R.M. Atlas, and C.-L. Shie
Dataset Title: Version 2 Goddard Satellite-Based Surface Turbulent Fluxes (GSSTF) Data Dataset Release Place: Greenbelt, MD, USA Dataset Publisher: NASA Goddard Earth Sciences Data and Information Services Center (GES-DISC) Version: 2.0 Online Resource: http://disc.sci.gsfc.nasa.gov/precipitation/data-holdings/access/gs... |
Temporal Coverage
| Start Date: 1987-07-01 |
| Stop Date: 2000-12-31 |
| Start Date: 1988-01-01 |
| Stop Date: 2000-12-31 |
Location Keywords
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GEOGRAPHIC REGION
> GLOBAL OCEAN
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Data Resolution
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Latitude Resolution:
1 Degree
Longitude Resolution: 1 Degree Temporal Resolution: Monthly |
Science Keywords
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY >SPECIFIC HUMIDITY [Definition] |
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >HUMIDITY >SEA-AIR HUMIDITY DIFFERENCE [Definition] |
| ATMOSPHERE >ATMOSPHERIC WATER VAPOR >PRECIPITABLE WATER >LOWEST 500-M PRECIPITABLE WATER [Definition] |
| ATMOSPHERE >ATMOSPHERIC WINDS >WIND STRESS >ZONAL WIND STRESS [Definition] |
| OCEANS >OCEAN HEAT BUDGET >HEAT FLUX >LATENT HEAT FLUX [Definition] |
| OCEANS >OCEAN HEAT BUDGET >HEAT FLUX >SENSIBLE HEAT FLUX [Definition] |
| OCEANS >OCEAN WINDS >SURFACE WINDS >10 M WINDS [Definition] |
| OCEANS >OCEAN WINDS >WIND STRESS [Definition] |
| OCEANS >OCEAN WINDS >WIND STRESS >MERIDIONAL WIND STRESS [Definition] |
ISO Topic Category
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CLIMATOLOGY/METEOROLOGY/ATMOSPHERE
OCEANS |
Platform
| DMSP 5D-2/F10 >Defense Meteorological Satellite Program-F10 [Information] |
| DMSP 5D-2/F11 >Defense Meteorological Satellite Program-F11 [Information] |
| DMSP 5D-2/F13 >Defense Meteorological Satellite Program-F13 [Information] |
| DMSP 5D-2/F14 >Defense Meteorological Satellite Program-F14 [Information] |
| DMSP 5D-2/F8 >Defense Meteorological Satellite Program-F8 [Information] |
Instrument
| SSMI >Special Sensor Microwave/Imager [Information] |
Project
| EOS >Earth Observing System [Information] |
| EOSDIS >Earth Observing System Data Information System [Information] |
| ESIP >Earth Science Information Partners Program [Information] |
| MEASURES >Making Earth Science Data Records for Use in Research Environments [Information] |
Use Constraints
| Please Cite the data set creators if you use this data. |
Data Set Progress
| COMPLETE |
Data Center
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Goddard Earth Sciences Data and Information Services Center (formerly Goddard DAAC), Global Change Data Center, Earth Sciences Division, Science and Exploration Directorate, Goddard Space Flight Center, NASA
[Information]
Data Center URL: http://disc.gsfc.nasa.gov/
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Personnel
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ERIC
J.
NELKIN Role: TECHNICAL CONTACT Role: INVESTIGATOR Email: Eric.J.Nelkin at nasa.gov Contact Address: NASA Goddard Space Flight Center Code 613.1 City: Greenbelt Province or State: MD Postal Code: 20771 Country: USA |
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CHUNG-LIN
SHIE Role: TECHNICAL CONTACT Role: INVESTIGATOR Email: chung-lin.shie-1 at nasa.gov |
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SCOTT
A.
RITZ Role: DIF AUTHOR Phone: 301-614-5126 Fax: 301-614-5268 Email: Scott.A.Ritz at nasa.gov Contact Address: NASA Goddard Space Flight Center Global Change Master Directory City: Greenbelt Province or State: Maryland Postal Code: 20771 Country: USA |
Publications/References
Atlas, R., R.N. Hoffman, S.C. Bloom, J.C. Jusem, and J. Ardizzone, 1996: A multiyear global surface wind velocity dataset using SSM/I wind obser-vations. Bull. Amer. Meteor. Soc., 77, 869-882.
Chou, S.-H., 1993: A comparison of airborne eddy correlation and bulk aerodynamic methods for ocean-air turbulent fluxes during cold-air outbreaks. Bound.-Layer Meteor., 64, 75-100.
Chou, S.-H., R.M. Atlas, C.-L. Shie, and J. Ardizzone, 1995: Estimates of surface humidity and latent heat fluxes over oceans from SSM/I data. Mon. Wea. Rev., 123, 2405-2425.
Chou, S.-H., C.-L. Shie, R.M. Atlas, and J. Ardizzone, 1997: Air-sea fluxes retrieved from special sensor microwave imager data. J. Geophys. Res., 102, 12705-12726.
Chou, S.-H., E. Nelkin, J. Ardizzone, R. Atlas, and C.-L. Shie, 2003: Surface turbulent heat and momentum fluxes over global oceans based on the Goddard satellite retrievals, version 2 (GSSTF2). J. Climate, 16, 3256-3273.
Dyer, A.J., 1974: A review of flux-profile relationships. Bound.-Layer Meteor., 7, 363-372.
Kalnay, E. and coauthors, 1996: The NCEP/NCAR 40-year reanalysis project. Bull. Amer. Meteor. Soc., 77, 437-471.
Schulz, J., P. Schluessel, and H. Grassl, 1993: Water vapor in the atmospheric boundary layer over oceans from SSM/I measurements. Int. J. Remote Sens., 14, 2773-2789.
Wentz, F.J., 1997: A well calibrated ocean algorithm for SSM/I. J. Geophys. Res., 102, 8703-8718.
GSSTF 2.0 Global Ocean Gridded Data Set
http://disc.sci.gsfc.nasa.gov/precipitation/data-holdings/access/gs...
GES DISC home page
http://disc.gsfc.nasa.gov
Chou, S.-H., 1993: A comparison of airborne eddy correlation and bulk aerodynamic methods for ocean-air turbulent fluxes during cold-air outbreaks. Bound.-Layer Meteor., 64, 75-100.
Chou, S.-H., R.M. Atlas, C.-L. Shie, and J. Ardizzone, 1995: Estimates of surface humidity and latent heat fluxes over oceans from SSM/I data. Mon. Wea. Rev., 123, 2405-2425.
Chou, S.-H., C.-L. Shie, R.M. Atlas, and J. Ardizzone, 1997: Air-sea fluxes retrieved from special sensor microwave imager data. J. Geophys. Res., 102, 12705-12726.
Chou, S.-H., E. Nelkin, J. Ardizzone, R. Atlas, and C.-L. Shie, 2003: Surface turbulent heat and momentum fluxes over global oceans based on the Goddard satellite retrievals, version 2 (GSSTF2). J. Climate, 16, 3256-3273.
Dyer, A.J., 1974: A review of flux-profile relationships. Bound.-Layer Meteor., 7, 363-372.
Kalnay, E. and coauthors, 1996: The NCEP/NCAR 40-year reanalysis project. Bull. Amer. Meteor. Soc., 77, 437-471.
Schulz, J., P. Schluessel, and H. Grassl, 1993: Water vapor in the atmospheric boundary layer over oceans from SSM/I measurements. Int. J. Remote Sens., 14, 2773-2789.
Wentz, F.J., 1997: A well calibrated ocean algorithm for SSM/I. J. Geophys. Res., 102, 8703-8718.
GSSTF 2.0 Global Ocean Gridded Data Set
http://disc.sci.gsfc.nasa.gov/precipitation/data-holdings/access/gs...
GES DISC home page
http://disc.gsfc.nasa.gov
Creation and Review Dates
DIF Creation Date:
2008-11-03
Last DIF Revision Date:
2011-07-26
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