The minimum temperature in the extreme northwest in late December and early January can be as low as 3˚C to 4˚C. At Sylhet the rainfall average is 4180 mm, near the foot of the abrupt Meghalaya Plateau at Sunamganj it is 5330 mm, and at Lalkhal 6400 mm, the highest in Bangladesh. It is bordered by the Himalayas to the north and by the Bay of Bengal to the south. Rainfall in the pre-monsoon hot season (March-May) accounts for 10-25% of the total annual rainfall. since the wind in this season blows forms the land to the ocean, almost dry conditions prevail and very little rainfall occurs at this time. April is usually the hottest month in the country. The rainy season (June-October) accounts for 70 to 80% of the annual rainfall, which varies from 70% in the eastern part of the country to about 80% in the southwest, and 85% in the northwest. During the winter months in the northern hemisphere, the land is colder than the sea and so a high-pressure system develops over the Asian landmass. The tropics can be regarded as the region lying between 30˚N latitude and 30˚S latitude. This rainfall is caused by thunderstorms. The warm, moist air spirals upwards, condenses and forms clouds and rain. In some places in Rajshahi and Kushtia districts the maximum temperature in during the latter part of the pre-monsoon season. Rainfall of this season accounts for 70 to 85 percent of the annual total. Depressions occasionally develop over the Indian Ocean or in the Bay of Bengal. Thanks, Bali, we will try to publish a content regarding Nigeria agriculture. Average April, the temperature decreases slightly during the summer months, which coincides with the rainy season. This site uses Akismet to reduce spam. As the winter season progresses into the pre-monsoon hot season, temperatures rise, reaching the maximum in April, which is the middle of the pre-monsoon hot season. …to wet equatorial climates, tropical monsoon and trade-wind littoral climates exhibit a short dry season, usually in the low-sun (“winter”) season, and the highest temperatures generally occur at the end of this clear spell. Rainfall which takes place during this time accounts for 10 to 25 percent of the annual total. Describe where the highest and lowest temperatures are found. This spinning air can reach speeds of 200 km/hr and absorbs large amounts of moisture forming cumulonimbus clouds which result in heavy rain. These are the north-east monsoon winds. However, the cold winter air that moves into the country from the northwestern part of India loses much of its intensity by the time it reaches the northwestern corner of the country. January is the coldest month in Bangladesh. Widespread cloud cover lowers the temperature during the later of the pre-monsoon season. Climate is the average state of the atmosphere near the earth’s surface over a long span of time. From 1981 to 1985, 174 severe cyclones (with winds speeds of more than 24 km/hr) formed in the Bay of Bengal. The diameter of a cyclone may range from 300 km to 600 km. Characteristics of the hot and dry pre-monsoon season. Technically, a cyclone is an area of low pressure where strong winds blow around a center in an anticlockwise direction in the Northern Hemisphere and a clockwise direction in the Southern Hemisphere. mountains) influence the climate of any country. Among all the atmospheric disturbances, cyclones are the most destructive. The average annual rainfall in Bangladesh varies from 1500 mm in the west-central part to over 3000 mm in the northeast and southeast. Yes, i agree this is really useful content, Your email address will not be published. TROPICAL MONSOON The tropical monsoon climate experiences abundant rainfall like that of the tropical rain forest climate, but it is concentrated in the high-sun season. Describe the distribution of the rainfall (comment of the areas which receive the highest and lowest amounts). Justify your answer. The converse happens during the summer months. It enters Bangladesh in late May or early June. Please log in using one of these methods to post your comment: You are commenting using your account. The rising warm air cools rapidly, condensation occurs, clouds form, and rainfalls. ( Log Out /  The season is the climatic type, at any place, associated with a particular time of the year. The timing of such depressions coincides with the southwest monsoon wind. In late December and early January, minimum temperatures in the extreme northwestern and northeastern parts of the country, such as Rangpur and Sylhet, are as low as 4˚C to 7˚C. Distinguishing Characteristics Temperature. On hot, humid days, the air near to the ground is heated up. Cyclones develop over warm seas when the surface temperature is more than 27˚C. At the same time, high pressure develops over the comparatively cooler the Indian Ocean. The wind that changes direction with the change of seasons is known as the monsoon wind. LOCATION The monsoon climate beyond the equatorial region between 10 and 25 and North… By signing up for this email, you are agreeing to news, offers, and information from Encyclopaedia Britannica. ( Log Out /  Using the data below, construct climate graphs of the following three stations (1999) to illustrate the varying temperatures and rainfall amounts. At the same time, a low-pressure system develops over Australia and the Indian Ocean where it is warmer. Required fields are marked *. Air from the surrounding area spirals inwards to replace the rising air. Characteristics of the rainy monsoon season. Pakistan is also in moonsoon reagion y shouldn,t u include? Natural Topography: Location and Characteristics of Main Landforms, The hot and dry pre-monsoon season, from March to May, The rainy monsoon season, from June to October. Bangladesh is part of the humid tropics, with the Himalayas on the north and the funnel-shaped coast touching the Bay of Bengal of the south. Paper 2 This is caused by the tropical depression that enters the country from the Bay of Bengal. The month-wise occurrence is as follows: Severe cyclones occur mostly during pre-monsoon (April-May) and post-monsoon (September-December) periods and they are the ones that cause the most destruction. The word ‘monsoon’ is derived from the Arabic word ‘Mauism’ which means seasons. This produces large hailstones, strong winds, thunder, and lightning. Higher rainfall in the northeast is caused by the additional effect of the orographic uplifting provide by the Meghalaya plateau. In Surm Valley and neighboring hills, the rainfall is very high. View all posts by Cikgu Geography, information is really very helpful but the back ground is really dark in color. Again, higher rainfall in the northeast is caused by the additional optional uplifting effect of the Meghalaya plateau. MAP READING & 5 SHORT ANSWER QUESTIONS. Most of the damage during a cyclone is done by the storm surges, which sometimes wash over entire offshore and large areas on the coast. Let’s find more characteristics of a tropical monsoon climate. The average rainfall of this season varies from 200 mm in the west-central part of the country to 800 mm in the northeast region such as Sylhet and Chittagong divisions. After April, increasing cloud cover lowers the temperature. In Bangladesh, the maximum value of this storm surge has been reported to be as high as 13m. Winter (November through February) is very dry and accounts for only less than 4% of the annual rainfall, rainfall, Rainfall in this season varies from 20 mm in the west and south to 40 mm in the northeast, which is caused by the westerly disturbances that enter the country from the northwestern part of India. It has a tropical climate because of its physical location. It is bordered by the Himalayas to the north and by the Bay of Bengal to the south. A cyclone is a tropical storm or atmospheric turbulence involving the circular motion of winds. The Bengal calendar year is traditionally divided into six seasons: Each season lasts on average two months, but some seasons merge into other seasons, while others are short. At times more than two to three weeks of rainfall may occur in Sylhet and Cox’s Bazar areas. This difference in pressure causes the winds to flow from the high-pressure area to the low-pressure area that is, from the ocean to the land area. The change in direction is due to the difference in the way water and land heat. Being located near the equator, the tropical monsoon climate experiences warm temperatures throughout the year. These storm clouds are usually 5 km wide and 8 km high. Geography 2230/2 The rainy season coincides with the summer monsoon. Change ), You are commenting using your Twitter account. In addition to the waves associated with winds, abrupt surges of water known as storm surges are associated with cyclones. Copyright © [2020] [Bank of Info] | Powered by [Regal Solution]. All the tropical seas of the earth, with the exception of the south Atlantic and southeast Pacific, give birth to this atmospheric phenomenon known as tropical cyclones. It refers to many elements including temperature, precipitation, humidity, air pressure, wind movement, and direction. Change ), CODE Be on the lookout for your Britannica newsletter to get trusted stories delivered right to your inbox. Winds from Asia’s high-pressure area blow towards the low-pressure system in the southern hemisphere. During such depressions, continuous heavy rainfall occurs in Bangladesh for 7 to 10 days. The Bay is an ideal breeding ground for tropical cyclones. The air above the sea is heated, it expands and rises very rapidly creating an area of intense low pressure. The most destructive element of a cyclone is its accompanying surge. The rain in this period is caused by conventional storms (thunderstorm) or nor-westers (locally called a Kal Baiskhkhi). Announcing our NEW encyclopedia for Kids! The amount of rainfall during the is season varies from 1000 mm in the west-central part of the country to over 2000 mm in the south and northeast. As the tropic of climate passes through the country, a tropical climate … This results in heavy rainfall (see Figure 2.3). The single most dominant element of the climate of Bangladesh is the rainfall. Average temperatures in January vary from about 17˚C in the northwestern and northeastern parts of 20˚-21˚C in the coastal areas. The influence of the tropical monsoon climate is clearly evident in Bangladesh during the rainy season and the cool, dry winter season. The most striking feature of a cyclone is its ‘eye’. Characteristics of the cool and dry winter season. @ nihal hossain. As the tropic of climate passes through the country, a tropical climate prevails., tropical monsoon and trade-wind littoral climate. The high temperatures of the Asian landmass create an area of low pressure. Look at a map in an atlas that shows the annual mean temperatures for Bangladesh. not helpful at all i can on this site to find out the dominant vegetation and it is nowhere on here! The rainfall in Bangladesh varies, depending upon season and location. Average temperatures in April vary from about 27˚C in the northeast to 30˚C in the extreme west of the country. This is popularly known as Kal Baishaki in the early summer and Ashshiner Jhor during the late monsoon. it is not that usefull and not enough detailed in some parts and so much detailed in some other parts, This syllabus according to Bruneian O level Geography Paper. Learning is a everyday process.Learning can be fun if you know how?Learning Geography can be simple and easy.Technology has play a very important role now in learning why you want to be left behind?? Other articles where Tropical monsoon climate is discussed: tropical monsoon and trade-wind littoral climate: …to wet equatorial climates, tropical monsoon and trade-wind littoral climates exhibit a short dry season, usually in the low-sun (“winter”) season, and the highest temperatures generally occur at the end of this clear spell. Bangladesh extends from 20˚34΄N to 26˚38΄N latitude and from 88˚01΄E to 92˚41΄E longitude.

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