Dataset name: 
NASA Global Energy and Water Exchanges (GEWEX) Surface Radiation Budget (SRB)

Variable names: 
sw_sfc_dn

Reference of original data:
Stackhouse, Jr., Paul W., Shashi K. Gupta, Stephen J. Cox, J. Colleen Mikovitz, Taiping Zhang, and Laura M. Hinkelman:
    The NASA/GEWEX Surface Radiation Budget Release 3.0: 24.5-Year Dataset.  GEWEX News, 21, No. 1, February, 10-12, 2011.

Downloaded site:
https://eosweb.larc.nasa.gov/project/srb/srb_table

Downloaded Date:
June 27, 2014

Downloaded by:
Mingquan Mu
Earth System Science, University of California, Irvine

Name and version of original source:
NASA GEWEX SRB rel3.0

Start date:
July 1983

End date:
December 2007

Temporal resolution:
monthly

Spatial resolution:
1.0x1.0 degree

Unit:
Watt m-2

Data format:
netCDF