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The map above is a cumulative rainfall map for
areas of the southcentral US for the time interval
of June 3 through June 10, 2004. Color patterns on
the map show the amount of rain which fell in those
areas for this seven day period. Maps like this were
once prepared by totalling rain gauge observations,
plotting them on a map by hand and contouring the
map. Now NASA has rainfall measuring satellites which
estimate rainfall amounts over broad areas and provide
data which can be used to create computer generated
images such as the map shown above.
The map was produced by the Tropical
Rainfall Measuring Mission - a Joint project between
NASA and the Japan Aerospace Exploration Agency.
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