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Meteorological drought analysis for Northwest Bangladesh

journal contribution
posted on 06.12.2017, 00:00 authored by Mohammad KhanMohammad Khan, Muhammed BhuiyanMuhammed Bhuiyan, S Datta
This paper describes meteorological drought which is a period marked by below normal rainfall. An attempt has been made to apply the method developed by Herbst et al. (1966), in order to determine the date of onset and termination, intensity index and severity index of drought. These indices enable the droughts to be compared in time and space irrespective of their seasonal occurrences. Half-monthly rainfall data for a period between 1962-95 for the fifteen stations in the northwest region of Bangladesh have been used for the present analysis. The study shows that there is no unique date of onset and termination of drought in the northwest region of Bangladesh. It occurs in a number of spells, the duration of which is random as expected. Variables like mean annual rainfall versus mean annual rainfall deficit and drought intensity versus percent of rainfall that occurred less than the mean rainfall in a spell are plotted to get a hold of their relationships. Except Bogra (R006), and most likely Nekmard (R193) and Shiganj (R215), rest of the stations in the region have similar drought characteristics.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

19

Issue

23

Start Page

1

End Page

19

Number of Pages

19

ISSN

1017-9186

Location

Dhaka

Publisher

Department of Water Resources Engineering BUET, DHAKA-1000

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

James Goldston Faculty of Engineering and Physical Systems; Pāni Unnaẏana Borḍa;

Era Eligible

Yes

Journal

Bangladesh Journal of Water Resource Research

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