| dc.description.abstract | For hydrological, agricultural and other raindependent
activities, the estimates of the average rainfall
over a catchment are very important.' Most of the
methods formulated for estimating the areal average rainfall
make use use
of raingauges has several disadvantages which are, sometimes,
not easily controlled. Due to these drawbacks,
recent attempts ha~e been made to utilize remote sensing
techniques in the estimation of areal rainfall. Areal
estimation of rainfall from METEOSAT satellite data is
the main objective of this study.
10-day and monthly total cold-cloud durations (CCD)
for the months of January and February, 1987 covering
_ the area within Latitudes 34°E to 400E and Longitudes
50S to 90S of S'butQ.ernTanzania, digitized corresponding
to the raingauge statiction network,for three different
temperature thresholds was used. These records of • -!Meteosat
data were'compiled at University of Reading,
U.K. Daily raingauge records from 147 stations located
within the study area were used. These records were
used in generating 10-day and monthly total rainfall
records whrch were employed in the study as "ground
truth" records. The rainfall records were obtained from
the Directorate of Meteorology df Tanzania, Dar es Salaam.
The study was divided into three sections. The
first section deals with the relationship between the
point CCDs and the surface recorded rainfall. Si!.ipl | en |
