On a December night, temperature in Drass Jammu and Kashmir may drop down to minus 45°C while Thiruvananthapuram or Chennai on the same night records 20°C or 22°C. Such areas have extremes of climate. In May, the heat belt moves further north, and in the north-western part of India, temperatures around 48°C are not uncommon 5. The revision notes help you revise the whole chapter in minutes. While the annual precipitation is less than 10 cm in the northwest Himalayas and the western deserts, it exceeds 400 cm in Meghalaya. He used S for semi-arid and W for arid and the following small letters to define subtypes: f sufficient precipitation , m rainforest despite a dry monsoon season , w dry season in winter , h dry and hot , c less than four months with mean temperature over10°C , g Gangetic plain. Occasionally, it may shift its position as East as the middle Ganga valley with the result that the whole of the northwestern and northern India up to the middle Ganga valley comes under the influence of dry northwestern winds.
Areas of Low Rainfall : Western Uttar Pradesh, Delhi, Haryana, Punjab, Jammu and Kashmir, eastern Rajasthan, Gujarat and Deccan Plateau receive rainfall between 50-100 cm. The Ganga delta and the coastal plains of Orissa are hit by strong rain-bearing storms almost every third or fifth day in July and August while the Coromandal coast, a thousand km to the south, goes generally dry during these months. Owing to the conditions of high temperature and humidity, the weather becomes rather oppressive. If any pdf file have any copyright voilation please inform us we shell remove that file from our website. The revision notes covers all important formulas and concepts given in the chapter. We have organised all ncert books in hindi for class 11 which can be downloaded in the pdf format. The towering mountain chain provides an invincible shield to protect the subcontinent from the cold northern winds.
December and January are the coldest months in the northern plain. It is because firstly, they have little humidity; 3. The summer months are a period of excessive heat and falling air pressure in the northern half of the country. Rest of India have a variability of 25-50 per cent and these areas receive an annual rainfall between 50 -100 cm Climatic Regions of India The whole of India has a monsoon type of climate. Besides the frequency and intensity of these depressions, the passage followed by them determines the spatial distribution of rainfall. Just click on the link of the book which you would like to download.
The Chotanagpur plateau gets 15 cm rainfall from this part of the branch. We have organised all ncert books in english for class 11 which can be downloaded in the pdf format. The mean daily temperature remains below 21°C, over most parts of northern India. Due to high temperature there is lo to attract the trade winds of Southern Hemisphere coming from the Indian Ocean. These are known as jet streams.
These areas have an annual rainfall of less than 50 cm. Download revision notes for Climate class 11 Notes Geography and score high in exams. The meteorologists recognise the following four seasons: i the cold weather season ii the hot weather season iii the southwest monsoon season iv the retreating monsoon season. During the winters, the weather in India is pleasant. During the south-west monsoon period after having rains for a few days, if rain fails to occur for one or more weeks, it is known as break in the monsoon. Areas of Inadequate Rainfall: Parts of the Peninsula, especially in Andhra Pradesh, Karnataka and Maharashtra, Ladakh and most of western Rajasthan receive rainfall below 50 cm.
Ncert books in hindi is required by many students from hindi state board exams. If you face any technical problem please tell us by filling. Climate refers to the average of the weather condition over a longer period of time 2. Difference in air pressure causes reversal in the direction of monsoon winds. Areas of Medium Rainfall : Rainfall between 100-200 cm is received in the southern parts of Gujarat, east Tamil Nadu, northeastern Peninsula covering Odisha, Jharkhand, Bihar, eastern Madhya Pradesh, northern Ganga plain along the sub-Himalayas and the Cachar Valley and Manipur.
They become northerly in the Ganga-Brahmaputra delta. By the end of December 22nd December , the sun shines vertically over the Tropic of Capricorn in the southern hemisphere. By and large, the topography of the region influences the wind direction. It is changing even now but the change is imperceptible. Onset of the Monsoon 1. Even if you wish to have an overview of a chapter, quick revision notes are here to do if for you.
Dust storms in the evening are very common during May in Punjab, Haryana, Eastern Rajasthan and Uttar Pradesh. Distance from the Sea : With a long coastline, large coastal areas have an equable climate. During April and May when the sun shines vertically over the Tropic of Cancer, the large landmass in the north of Indian ocean gets intensely heated. Although the amount is meager, it is highly beneficial for rabi crops. A number of geological evidences suggest that once upon a time, large part of the earth was under ice cover.
Churu in Rajasthan may record a temperature of 50°C or more on a June day while the mercury hardly touches 19°C in Tawang Arunachal Pradesh on the same day. Here it is important to know why the Tamil Nadu coast remains dry during this season. The pattern of pressure and winds as mentioned above is formed only at the level of the troposphere. These variations represent the subtypes of the monsoon climate. The variations in the atmospheric pressure closer to the surface of the earth have no role to play in the making of upper air circulation. This easterly jet stream is held responsible for the burst of the monsoon in India. By the end of September, the southwest monsoon becomes weak as the low pressure trough of 3.