Satellite assessment of rainfa
Completed The purpose of the project is Improved empirical methods of estimating rainfall over greater Sahel: 5 year data set comparison.The definition of temporal and spatial limitations.Stronger understanding of meteorological processes and the vegetation/rainfall relationships involved. This project has been highly successful. TAMSAT are now among the world leaders in satellite rainfall estimation. Validation of the cold cloud duration method of estimating area rainfall over 10 day or monthly periods has been demonstrated. In the past year efforts have concentrated on :(1) development of a 5 year rainfall climatology from satellite images compared with conventional ground observations.(2) validation, improvement and extension of the technique further south and for shorter time periods.(3) identification of anomalous areas.(4) comparison of the satellite rainfall estimates and vegetative response as shown by NOAA satellite 10 day vegetation indices, to determine the extent of time-lagged correspondence.The success of TAMSAT has led to several TC-supported applications and much further interest in Africa. However, the project has also been hurt by it's own success and UK expertise so developed is being actively bought out by US interests.

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