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| | | Climate maps | | |
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| Climate maps |
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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.
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