GEWEX Americas Prediction Project

National Oceanographic and Atmospheric Administration

University of Maryland

Department of Atmospheric and Oceanic Science

GEWEX Continental Scale International Project (GCIP) and GEWEX Americas Prediction Project (GAPP)

Surface Radiation Budget (SRB) Data

Access to the SRB Product

GCIP/GAPP at 1/2 degree reprocessed from 1996 to 2000

GCIP/GAPP at 1/8th degree reprocessed from 1996 to 2000

Read first before download

GCIP/GAPP comparison with ISCCP

Notice to users


This is a first attempt to provide the user community with surface radiation budget (SRB) data, as generated by the National Oceanic and Atmospheric Administration (NOAA), National Environmental Satellite, Data and Information Service (NESDIS) over the United States. This activity is in support of the Global Energy and Water Cycle Experiment (GEWEX) Continental Scale International Project (GCIP) and GEWEX Americas Prediction Project (GAPP).

The product is an outgrowth from an ongoing activity at the Department of Atmospheric and Oceanic Science, University of Maryland to develop and validate an operational model for deriving surface and top of the atmosphere shortwave radiative fluxes from Geostationary Operational Environmental Satellites (GOES), in support of GCIP activities and regional operational numerical weather prediction models.

Instantaneous, hourly, daily, and monthly mean information on surface downwelling shortwave (SW), top of the atmosphere downwelling and upwelling radiative fluxes, photosynthetically active radiation (PAR), cloud amount, and surface skin temperature are provided for an area bounded by 70-125 W longitude and 25-50 N latitude. Validation results against ground truth are also included.

Three types of archives are provided:

Current data     Historic data    Specialized Data               

The current data archive provides information within one to two days of real time. At the completion of the current month record, the data are moved to the historic data archive. Historic data are currently available from 1996 to 2006, and past months of 2007.


High Resolution Surface Downward PAR

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