However, with the progression of this season wind speed increases, and the wind direction becomes more persistent. This page was last modified on 2 December 2014, at 16:41. Murshed, A.K.M. Volume(N3) Issue3(Vn3) Issue4(Vn3) Issue5(Vn3) Volume(N4) … 0000010875 00000 n Bangladesh has a tropical monsoon climate with significant variations in rainfall and temperature throughout the country. 0000003825 00000 n The lowest average relative humidity (57%) has been recorded in Dinajpur in the month of March. Bangladesh : Rainfall & Weather. Volume(N3) Issue3(Vn3) Issue4(Vn3) Issue5(Vn3) Volume(N4) … In some places in Rajshahi and Kushtia districts the maximum temperature in summer season rises up to 40°C or more. 0000014915 00000 n The details of data are analysed, interpreted and mapped here. startxref Except for the relatively dry western region of Rajshahi, where the annual rainfall is about 1,600 mm (63.0 in), most parts of the country receive at least 2,300 mm (90.6 in) of rainfall per year. The Köppen-Geiger climate classification is Aw. curves, which give a plot of rainfall intensity versus rainfall duration and recurrence interval. 0000036879 00000 n Heavy rainfall is characteristic of Bangladesh causing it to flood every year. Average temperatures in January vary from about 17'C in the northwestern and northeastern parts to 20°-21°C in the coastal areas. The monsoon is less intense in the west, where the annual rainfall is around 1,500/1,600 mm (60/63 in), with a maximum in July of about 300/350 mm (12/13.5 … xref Academia.edu is a platform for academics to share research papers. 0000063253 00000 n In addition to radio and television, daily newspapers publish weather reports regularly on the basis of information supplied by the meteorological department. Daily Rainfall Data 1007. 0000003258 00000 n However, it is more extensive in the southern and eastern parts (90%) than in the northwestern part (75%). The maximum rainfall occurs at Sylhet in the north-eastern part and along the coastline in the southern part and with a minimum in … Bangladesh is located in the tropical monsoon region and its climate is characterised by high temperature, heavy rainfall, often excessive humidity, and fairly marked seasonal variations. It is surrounded by the Assam Hills in the east, the Meghalaya Plateau in the north, the lofty Himalayas lying farther to the north. In late December and early January, minimum temperature in the extreme northwestern and northeastern parts of the country reaches within 4 to 7 degrees of freezing point. 238 0 obj<> endobj In low and tropical latitudes the change would be very small (only 0.05°-0.25°C). During an impending cyclone, observation and forecasting are made and warnings issued almost continuously through radio and television. Climate Report; Report on Roanu; Report on MORA; Newsletter. In the western part, summer temperature sometimes reaches upto 40°C. The rainy season, which coincides with the summer monsoon, is characterised by southerly or southwesterly winds, very high humidity, heavy rainfall, and long consecutive days of rainfall which are separated by short spells of dry days. Climatic change Any climatic change in Bangladesh will, of course, be a part of worldwide climatic changes. These account for 70% of the annual total in the eastern part, 80% in the southwest, and slightly over 85% in the northwestern part of Bangladesh. Rainfall at station above 50 millimeters are shown in red.red. Saiful Islam, M. Shah Alam Khan, Impact of climate change on rainfall intensity in Bangladesh, in 3rd International Conference on Water and Flood Management, ICWFM, 2011 Google Scholar 0000014182 00000 n The summers here have a good deal of rainfall, while the winters have very little. The additional uplifting (by the Meghalaya Plateau) of the moist air causes higher amount of rainfall in the northeast. Climatic stations are scattered around the country - to record the diverse geographic conditions of the country. Computer simulation of global temperature change shows that if the CO2 concentration of the atmosphere becomes doubled from its present-day value, then global temperature would increase 1.3°-4°C. The amount of rainfall in this season varies from 100 cm in the west central part to over 200 cm in the south and northeast. 0000012029 00000 n 0000009549 00000 n Rainfall Table; Water Level Table; Forecast & Warning . The pre-monsoon hot season is characterised by high temperatures and the occurrence of thunderstorms. As a result of the flow of cold-dry winds from the northwestern part of India during the winter season, the cloud cover is at a minimum. Geographic distribution of annual rainfall shows a variation from 150 cm in the west-central part of the country to more than 400 cm in the northeastern and southeastern parts. 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