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Rainfall In India
Transcript of Rainfall In India
Jammu & Kashmir
In Maharashtra rainfall starts normally in the first week of June & July is the wettest month while August too gets substantial rain. Monsoon starts its retreat from the State with the coming of September. Rainfall in Maharashtra differs from region to region.
Farming in Maharashtra is mostly rain-fed type of farming, which is entirely dependant on seasonal rains. Rain-fed cropping results in lower agriculture productivity. Below average rains adversely affects growth of kharif crops. An insufficient rain in some regions affects production of crops like rice.
The state of Karnataka in India has a bittersweet relationship with rains. While its regions of Malnad and coastal Karnataka receive copious amount of rainfall; its north Bayaluseemae region in the Deccan Plateau is one of the most arid regions in the country. Most of the rains received in the state is during the monsoon season.
The average annual rainfall in Karnataka is 1248 mm. The state is divided into three meteorological zones viz. North Interior Karnataka, South Interior Karnataka and Coastal Karnataka.
The climate of Jammu and Kashmir varies greatly owing to its rugged topography. In the south around Jammu, the climate is typically monsoonal, though the region is sufficiently far west to average 40 to 50 mm (1.6 to 2 inches) of rain per month between January and March. In the hot season, Jammu city is very hot and can reach up to 40 °C (104 °F) whilst in July and August, very heavy though erratic rainfall occurs with monthly extremes of up to 650 millimetres (25.5 inches). In September, rainfall declines, and by October conditions are hot but extremely dry, with minimal rainfall and temperatures of around 29 °C (84 °F).
The amount of rainfall in the Punjab ranges between 250 mm and 1000 mm. The maximum falling near the Shivalik Hills and the minimum towards the desert in the west. 70 to 80 percent of the total rainfall is concentrated during the three months of south-west monsoon winds and the rest comes during the winter months. There is wide difference in the amount of rainfall experienced in east and west Punjab.
The climate of Rajasthan state varies from arid to sub-humid. To the west of the Aravalli range, the climate is characterised by low rainfall with erratic distribution, extremes of diurnal and annual temperatures, low humidity and high wind velocity. The climate is semi-arid to sub-humid in the east of the Aravalli range, characterised by more or less the same extremes in temperatures but relatively lower wind velocity and high humidity with better rainfall. The entire state is characterised by hyperthermic conditions.
Haryana is located in the northwest part of the country and the climate is arid to semi arid with average rainfall of 455 mm. Around 70 % rainfall is received during the month from July to September and the remaining rainfall is received during Dec. to Feb. There are two agro climatic zones in the state. The north western part is suitable for Rice, Wheat, Vegetable and temperate fruits and the south western part is suitable for high quality agricultural produce, tropical fruits, exotic vegetables and herbal and medicinal plants.
The monsoon is, indeed, a characteristic feature of the Gujarat weather because the other parts of the western India is devoid of any rainfall. Studying the geography of Gujarat, one can find that the rainfall in Gujarat varies from place to place - the average rainfall varies from 33 to 152 centimeters. The northern region receives a rainfall ranging from 51 to 102 centimeters; whereas the southern region receives 76 to 152 centimeters of rainfall.
Rainfall in the southern regions of Saurashtra and the Gulf of Cambay is low compared to the other parts of Gujarat. The arid regions around the Rann of Kutch faces an acute scarcity of water, due to lack of rainfall in these areas.
The southwest summer monsoon, a four-month period when massive convective thunderstorms dominate India's weather, is Earth's most productive wet season. A product of southeast trade winds originating from a high-pressure mass centered over the southern Indian Ocean, the monsoonal torrents supply over 80% of India's annual rainfall. Attracted by a low-pressure region centered over South Asia, the mass spawns surface winds that ferry humid air into India from the southwest. These inflows ultimately result from a northward shift of the local jet stream, which itself results from rising summer temperatures over Tibet and the Indian subcontinent. The void left by the jet stream, which switches from a route just south of the Himalayas to one tracking north of Tibet, then attracts warm, humid air.
Types & amount of precipitation in India