Natural Resources
     and Environment

News, Publications & Announcements - Climate Change

July 1999
Global climate maps

The global climate maps presented here are based on data for 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.

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For related information, see the following theme pages: -Geo-Information  -Climate Change  
August 1998
Integrated coastal area management and agriculture, forestry and fisheries
FAO guidelines

This FAO Guidelines examines issues specific to those sectors, and suggest the processes, information requirements, policy directions, planning tools and possible interventions that are necessary for ICAM (Integrated coastal area management and agriculture).

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For related information, see the following theme pages: -Geo-Information  -Climate Change  
December 1996
Agrometeorological Crop Forecasting

Crop forecasting is the art of predicting crop yields (tons/ha) and production before the harvest actually takes place, typically a couple of months in advance. Several techniques can be used. What is described here is the approach used by FAO in national food security systems. Crop forecasting relies on computer programmes that describe the plant-environment interactions in quantitative terms. Such programmes are called "models", and they attempt to simulate plant-weather-soil interactions. They need, therefore, information and data on the most important factors that affect crop yields - the model inputs. After passing "through" the model, the inputs are converted to a number of outputs, such as maps of crop conditions and yields.

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For related information, see the following theme pages: -Geo-Information  -Climate Change  
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