Abstract:
Analysis of drought is very important for
the irrigation purpose of a country. In this work
analysis of drought in the eastern part of Bangladesh
has been studied. Yearly meteorological drought has
been analyzed by comparing the yearly rainfall
deficiency with the mean yearly rainfall. Yearly
drought analysis has also been performed by three
climatic indexes. The climatic indexes are De
Mortone Aridity Index, IdM; Seleaninov
Hydrothermic Index, IhS; and Donciu Climate Index,
IcD. With the help of annual rainfall assurance (A%)
yearly drought analysis has been performed by the
climatic indexes. Monthly drought analysis has been
done with the rainfall data, considering average
rainfall and minimum rainfall for a month. In this
study 17 meteorological stations have been chosen for
analysis. Distribution of rainfall, annual variation of
rainfall, yearly drought and percentage of drought
affected areas has been presented with the help of
different figures and tables. Monthly drought analysis
shows that generally the month of January, February,
March, November and December are drought
affected. The month of April faces drought almost
every year. May and October face drought
occasionally. The months June, July, August and
September experience heavy rainfall.
