GEWEX-RFA Data Set Description

Before attempting to submit data, please read "How to Participate"
(http://eosweb.larc.nasa.gov/GEWEX-RFA/documents/how_to_participate.html)
and the "File Convention" document
(http://eosweb.larc.nasa.gov/GEWEX-RFA/documents/data_format.html)
for detailed instructions on the data submission process.

Please maintain a copy of this form for each data product (defined by
<DataProduct>_<ProductVersion> as in the "File Conventions" document)
you submit to GEWEX-RFA, and submit an updated copy of the file with
EACH upload.  This file will serve as the documentation for the entire
data product within the assessment effort.

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Project Title: GEWEX-RFA
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Data product name: GEWEX-SRBQLW_Ed025
(<DataProduct>_<ProductVersion>)

1) Contact for scientific questions about data

Name:  Dr. Paul Stackhouse, Jr.
Address: Mail Stop 420, 21 Langley Boulevard, NASA LaRC, Hampton, VA 23681-2199
Telephone: 757-864-5368
E-mail address: Paul.W.Stackhouse@nasa.gov
URL:  http://gewex-srb.larc.nasa.gov/

2) What is the name of the original archived data set from which this
     GEWEX-RFA subset was produced? srb_rel2.5_qclw_monthly

3) Is the original archived data set currently available from another
     data center or web site? Yes
     If so, please list addresses or URLs: 
       http://eosweb.larc.nasa.gov/PRODOCS/srb/table_srb.html

4) Brief data description:  A reference or URL for the complete original
     archived data set documentation, followed by a brief summary of
     features of particular relevance to the RFA submission (such as gap
     filling method), is the preferred approach.
     (Items of interest: input data streams, name of algorithm used to
     produce data, start and end time of data, gaps in spatial or temporal
     coverage, and data quality issues, etc.).
   
Detailed description of the algorithm used in deriving these parameters can be
found in:

Gupta et al. (1992) - J. Appl. Meteor., 31, 1361-1367.
Gupta (1989)        - J. Climate, 2, 305-320.
Wilber et al. (1999) - NASA/TP-1999-209362, 35 pp. (available on the web from
http://techreports.larc.nasa.gov/ltrs/ltrs.html) 

Cloud parameters were derived from the International Satellite Cloud Climatology
Project (ISCCP; Rossow and Schiffer, 1999,BAMS, 80, 2261-2287) DX data product.

Temperature and moisture profiles were obtained from the 4-D data assimilation
Goddard EOS Data Assimilation System, level-4 (GEOS-4) obtained from the Global
Modeling and Assimilation Office (GMAO) at NASA Goddard Space Flight Center
(GSFC) (Bloom et al., 2005. Documentation and Validation of the Goddard Earth
Observing System (GEOS) Data Assimilation System - Version 4 .  Technical Report
Series on Global Modeling and Data Assimilation 104606 , 26
http://gmao.gsfc.nasa.gov/pubs/docs/Bloom168.pdf)

The use of GEOS-4 for meteorology is the primary difference between
this version (Ed025) and version Ed020.

Column ozone values for the entire duration of this dataset (July 1983 to
December 2004) were obtained primarily from the Total Ozone Mapping Spectrometer
(TOMS) archive.

Surface emissivities were taken from a map developed at NASA LaRC (Wilber et al.
1999, NASA/TP-1999-209362, 35 pp.).

http://gewex-srb.larc.nasa.gov/

5) History of updates and changes.  If you resubmit a new version of
     any part of this data product to GEWEX-RFA, please use this space to
     record the reasons for the new submission (i.e., fixed error in ___
     parameter; changed to area-weighted spatial averaging, etc.)  Please
     specify the parameter(s) affected, new RFA number(s), and the date of
     the change.

6) Please provide a list of publications and journal articles pertaining
     to these data (if any); or a link to a bibliography for the product.

   http://gewex-srb.larc.nasa.gov/common/php/SRB_publications.php 

7) If you would like a specific citation or acknowlegment when these
     data are used in a publication, please provide that here:

"These data were obtained from the NASA Langley Research Center 
    Atmospheric Sciences Data Center GEWEX/SRB Project."

8)  Please indicate below all data types currently included in the GEWEX-RFA
      archive for this data product.

A) Top of atmosphere data products
          _____ Maps (Parameters: list here)
          _____ Time series (Parameters: list here)

B) Surface data products
          __X__ Maps (Parameters: ALWDN, CLWDN2, ALWUP, ALWNET)
          __X__ Time series (Parameters: ALWDN, CLWDN2, ALWUP, ALWNET)

C) Ground-based measurements
          _____ Time series (Parameters: list here)

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Atmospheric Science Data Center
NASA Langley Research Center
User and Data Services
MS 157D
2 South Wright St.
Hampton, VA 23681-2199
Tel: (757) 864-8656
Fax: (757) 864-8807
Internet: larc@eos.nasa.gov
URL: http://eosweb.larc.nasa.gov/