Data Sets

Data sets are a necessary part of describing the global water and energy cycle, and provide scientists with the information they need in their work to understand and predict climate variation. GEWEX Panels coordinate the production of data sets from measurements taken from satellites and in situ observation networks around the globe. Links to data sets or the projects that generated them are below.

For an overview on how to assess the quality of a data set, see the Data Set Quality Assessments guide. This aide gives the hows and whys of evaluating how good a data set really is.


GEWEX Cloud System Study (GCSS)

Data Integration for Model Evaluation (DIME)


Baseline Surface Radiation Network (BSRN)

Global Aerosol Climatology Project (GACP)

Global Precipitation Climatology Project (GPCP)

Global water Vapor Project (GVaP)

International Satellite Cloud Climatology Project (ISCCP)

International Satellite Land-Surface Climatology Project (ISLSCP)

Surface Radiation Budget (SRB)



Coordinated Energy and Water Cycle Observations Project (CEOP)


Global Soil Wetness Project-2 (GSWP-2)

Global Soil Wetness Project-3 (GSWP-3)

Global DATA Centers

Global Precipitation Climatology Centre (GPCC)

Global Runoff Data Center (GRDC)

Reanalysis Data

European Centre for Medium-Range Forecasts

NASA/GSFC Global Modeling and Assimilation Office

National Centers for Environmental Prediction (NCEP)/NCAR

Other Data Sets


International GEWEX Project Office
111 Research Hall, Mail Stop 6C5
4400 University Drive
Fairfax, VA 22030 USA

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