[Parameters: Topic='ATMOSPHERE', Term='ATMOSPHERIC TEMPERATURE', Variable_Level_1='SURFACE AIR TEMPERATURE']
Surface Turbulent Fluxes, 1x1 deg Monthly Grid, Set1 and Interpolated DataEntry ID: GES_DISC_GSSTFM_2c
Abstract: These data are the Goddard Satellite-based Surface Turbulent Fluxes Version-2c Dataset recently produced through a MEaSUREs funded project led by Dr. Chung-Lin Shie (UMBC/GEST, NASA/GSFC), converted to HDF-EOS5 format. The stewardship of this HDF-EOS5 dataset is part of the MEaSUREs project,
GSSTF version 2b (Shie et al. 2010, Shie et al. 2009) generally agreed better with available ship measurements obtained from several field experiments in 1999 than GSSTF2 (Chou et al. 2003) did in all three flux components, i.e., latent heat flux [LHF], sensible heat flux [SHF], and wind stress [WST] (Shie 2010a,b). GSSTF2b was also found favorable, particularly for LHF and SHF, in an intercomparison study that accessed eleven products of ocean surface turbulent fluxes, in which GSSTF2 and GSSTF2b were also included (Brunke et al. 2011). However, a temporal trend appeared in the globally averaged LHF of GSSTF2b, particularly post year 2000. Shie (2010a,b) attributed the LHF trend to the trends originally found in the globally averaged SSM/I Tb's, i.e., Tb(19v), Tb(19h), Tb(22v) and Tb(37v), which were used to retrieve the GSSTF2b bottom-layer (the lowest atmospheric 500 meter layer) precipitable water [WB], then the surface specific humidity [Qa], and subsequently LHF. The SSM/I Tb's trends were recently found mainly due to the variations/trends of Earth incidence angle (EIA) in the SSM/I satellites (Hilburn and Shie 2011a,b). They have further developed an algorithm properly resolving the EIA problem and successfully reproducing the corrected Tb's by genuinely removing the "artifactitious" trends. An upgraded production of GSSTF2c (Shie et al. 2011) using the corrected Tb's has been completed very recently.
GSSTF2c shows a significant improvement in the resultant WB, and subsequently the retrieved LHF - the temporal trends of WB and LHF are greatly reduced after the proper adjustments/treatments in the SSM/I Tb's (Shie and Hilburn 2011). In closing, we believe that the insightful "Rice Cooker Theory" by Shie (2010a,b), i.e., "To produce a good and trustworthy 'output product' (delicious 'cooked rice') depends not only on a well-functioned 'model/algorithm' ('rice cooker'), but also on a genuine and reliable 'input data' ('raw rice') with good quality" should help us better comprehend the impact of the improved Tb on the subsequently retrieved LHF of GSSTF2c.
This is the Monthly product; data are projected to equidistant Grid that covers the globe at 1x1 degree cell size, resulting in data arrays of 360x180 size. The monthly product is a result of averaging of a month worth of daily GSSTF2c files. Starting with Version 2c, there is only one set of Combined data, "Set1".
It contains 9 variables:
"E" 'latent heat flux' (W/m**2),
"STu" 'zonal wind stress' (N/m**2),
"STv" 'meridional wind stress' (N/m**2),
"H" 'sensible heat flux' (W/m**2),
"Qair" 'surface air (~10-m) specific humidity' (g/kg),
"WB" 'lowest 500-m precipitable water' (g/cm**2),
"U" '10-m wind speed' (m/s),
"DQ" 'sea-air humidity difference' (g/kg)
"Tot_Precip_Water" 'total precipitable water' (g/cm**2)
The double-quoted labels are the short names of the data fields in the HDF-EOS5 files.
The monthly temporal and one-degree spatial resolution of the product can be used to examining climate variability at these scales. Oceanic evaporation contributes to the net fresh water input to the oceans and drives the upper ocean density structure and consequently the circulation of the oceans.
The short name for this product is GSSTFM.
Parameters contained in the data files include the following:
DQ|sea-air humidity difference|(g/kg)
E|latent heat flux|(W/m^^2)
H|sensible heat flux|(W/m^^2)
Qair|surface air (~10-m) specific humidity|(g/kg)
STu|zonal wind stress|(N/m^^2)
STv|meridional wind stress|(N/m^^2)
Tot_Precip_Water|Total Precipitable Water|(g/cm^^2)
U|10-m wind speed|(m/s)
WB|lowest 500-m precipitable water|(g/cm^^2)
End of parameter information
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Data Set Citation
Dataset Originator/Creator: Shie, C.-L., K. Hilburn, L. S. Chiu, R. Adler, I-I Lin, E. Nelkin, and J. Ardizzone
Dataset Title: Surface Turbulent Fluxes, 1x1 deg Monthly Grid, Set1 and Interpolated Data
Dataset Series Name: GSSTFM
Dataset Release Date: November 18, 2011
Dataset Release Place: Greenbelt, MD, USA
Dataset Publisher: Goddard Earth Science Data and Information Services Center (GES DISC)
Dataset Editor: Andrey Savtchenko
Issue Identification: GSSTFM_2c
Data Presentation Form: Digital Science Data
Other Citation Details: http://disc.gsfc.nasa.gov/data/GES_DISC_GSSTFM_2c.htmlOnline Resource: http://disc.sci.gsfc.nasa.gov/daac-bin/DataHoldingsMEASURES.pl?PROG...
Start Date: 1987-07-01Stop Date: 2008-12-31
Latitude Resolution: 1 degree
Longitude Resolution: 1 degree
Horizontal Resolution Range: 100 km - < 250 km or approximately 1 degree - < 2.5 degrees
Temporal Resolution: monthly
Temporal Resolution Range: Monthly - < Annual
ATMOSPHERE > ATMOSPHERIC PRESSURE > SEA LEVEL PRESSURE
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > AIR TEMPERATURE
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SKIN TEMPERATURE
ATMOSPHERE > ATMOSPHERIC TEMPERATURE > SURFACE AIR TEMPERATURE
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > EVAPORATION
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > HUMIDITY
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > PRECIPITABLE WATER
ATMOSPHERE > ATMOSPHERIC WATER VAPOR > WATER VAPOR
ATMOSPHERE > ATMOSPHERIC WINDS > SURFACE WINDS
ATMOSPHERE > ATMOSPHERIC WINDS > TURBULENCE
ATMOSPHERE > ATMOSPHERIC WINDS > WIND STRESS
ATMOSPHERE > ATMOSPHERIC RADIATION > ATMOSPHERIC HEATING
ATMOSPHERE > ATMOSPHERIC RADIATION > HEAT FLUX
ATMOSPHERE > ATMOSPHERIC RADIATION > RADIATIVE FLUX
OCEANS > OCEAN HEAT BUDGET > CONDUCTION
OCEANS > OCEAN HEAT BUDGET > EVAPORATION
OCEANS > OCEAN HEAT BUDGET > HEAT FLUX
OCEANS > OCEAN PRESSURE > SEA LEVEL PRESSURE
OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE
OCEANS > OCEAN WINDS > SURFACE WINDS
OCEANS > OCEAN WINDS > TURBULENCE
OCEANS > OCEAN WINDS > WIND STRESS
ISO Topic Category
Use Constraints Please cite the dataset originator if you use this data.
Data Set Progress
Role: TECHNICAL CONTACT
Email: gsfc-help-disc at lists.nasa.gov
Goddard Earth Sciences Data and Information Services Center Code 610.2 NASA Goddard Space Flight Center
Province or State: MD
Postal Code: 20771
Phone: 301-763-8136 x131
Email: Lawrence.E.Flynn at noaa.gov
Role: DIF AUTHOR
Email: irina.v.gerasimov at nasa.gov
GES DISC NASA Goddard Space Flight Center Code 610.2
Province or State: MD
Postal Code: 20771
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Extended Metadata Properties
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Creation and Review Dates
DIF Creation Date: 2012-03-09
Last DIF Revision Date: 2012-03-13