World Water and Climate Atlas

The IWMI World Water and Climate Atlas gives irrigation and agricultural planners rapid access to accurate data on climate and moisture availability for agriculture.

The Atlas includes monthly and annual summaries for precipitation, temperature, humidity, hours of sunshine, evaporation estimates, wind speed, total number of days with and without rainfall, days without frost and Penman-Montieth reference evapotranspiration rates.

The core of the Atlas is data assembled from weather stations around the world for the period 1961-1990. Data can be extracted in summary, manipulated using the Atlas software, or exported in a standardized format for use in other applications. Users can also include their own local data for a more detailed picture of a particular area.

Applications include:

• identifying areas suitable for rainfed agriculture
• determining how much irrigation is needed in relation to what the climate provides
• providing inputs for hydrological modeling of river basins
• extracting climate inputs for crop modeling

For more information on the Atlas follow the links to the left.

Model and Web related Queries: Sadir Mohiyadeen (Senior Software Developer)

THIS PROJECT WAS MADE POSSIBLE BY THE GENEROUS SUPPORT OF THE GOVERNMENT OF JAPAN (OFFICIAL DEVELOPMENT ASSISTANCE) AND THE UNITED STATES AGENCY FOR INTERNATIONAL DEVELOPMENT (USAID)