From a mixture of precipitation station data and satellite derived precipitation maps the well-known trend of decreased rainfall from the mid 1960's to the early 1980's, followed by a rainfall increase was confirmed. Since 1982 the 300 mm isohyet has on average been moving 9.4 km north per year.
The map shows the rainfall trend 1982-2004, and the positions of the 300 mm isohyet in 1984 (drought year) and 1994 (wet year).


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Last modified Sun Mar 12 13:40:43 2006
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