A Software For Agricultural And Drought
Monitoring Using NOAA-AVHRR Images
Author(s)
A. Calle, J.L. Casanova and F. Gonzalez-Alonso
Abstract
In Spain the absence of rainfall together with the appearance of long periods of
drought represent one of the main environmental problems which have a
negative effect on agriculture and which give rise to large forest fires. Remote
sensing techniques provide an extremely useful tool for the observation and
monitoring of large areas of land, on a scale which is most adequate for a country
such as Spain. AVHRR images from the NOAA satellites are especially suitable
due to the large area of coverage of the sensor as well as the excellent temporal
resolution as daily images are available. Indicators of the state of the vegetation
applicable to NOAA images are normally derived from the NDVI (Normalised
Difference Vegetation Index). With the a
Keywords
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