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Global climate grids
Climate data
Climate maps
Spatial interpolation
Methods and tools
 
Climate maps
The global climate maps are based on data of mean monthly values of temperature, precipitation and cloudiness prepared in 1991 by R. Leemans and W. Cramer and published by the International Institute for Applied Systems Analysis (IIASA).
The IIASA data correspond to an imaginary "net" covering the Earth's surface with a mesh size of 0.5 degrees. This is equivalent to about 60 km - an area of about 3,600 sq. km - at the equator. Monthly climatic data for each cell in the net are provided by weather stations and consist of an average, or "normal", value of monthly climate elements. Using spatial interpolation, a value is computed for each cell based on the neighbouring station values.

Agroecological zoning guidelines (AGLL)
GEONETWORK: Maps, GIS datasets, Satellite Imagery
Global climate maps
Koeppen climate classification maps
Mountain climates

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