Anomalous Rainfall In Bangladesh

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Bangladesh girded in two sides by the Himalayan range and touched by the Bay of Bengal in the south. This geographical position as well as tropical monsoon climate, has made this country is one of the most disaster-prone countries in the world, chancy weather events; poor institutional capacity, insufficient financial resources, and imperfect infrastructure have made Bangladesh highly vulnerable . Anomalous Rainfall is a recurrent feature of the climate and it is common in Bangladesh. The potential impact of rainfall on agriculture is also of great concern. It is related to the inadequate rainfall over an extended period of time, usually for a season or more. This scarcity of drinking and irrigating water in the northwestern parts of the country causes serious drought. Monsoon rains normally sweep Bangladesh from June to September gets more than 80 percent of its annual rainfall during this period (Rajib et al. 2011). The amount of rainfall varies considerably from year to year and from season to season. It apparent that some regions in the northwestern part of the country, the amount of annual average rainfall may be as low as 130 mm whereas, in the north-eastern part, average annual rainfall may be as high as 500 mm (Rajib et al. 2011). In another study Devkota (2006) found that in some areas in the northwestern part of the country, the average of monsoon rainfall may be as low as 200 mm whereas, in the north-eastern part, average monsoon rainfall may be as high as 400 mm.

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