Question

write a brief note on distribution of rainfall in asia ?​

Answer 1

Short Notes on Distribution of Rainfall in India  :-

Heavy Rainfall Regions:

Annual rainfall of over 400 cm is received over parts of western coast and north eastern India.

 

Scanty Rainfall Regions:

i. It is less than 60 cm in western Rajasthan and adjoining parts of Gujarat, Haryana and Punjab.

ii. Rainfall is also low in the interior of the Deccan Plateau, east of the Sahyadris.

iii. A third area of low precipitation is around Leh in Jammu and Kashmir.

 

 

Moderate Rainfall Regions:

i. The rest of the country receives moderate rainfall.

ii. Snowfall is restricted to the Himalayan region.

iii. Annual rainfall of over 400 cm is received over parts of western coast and north eastern India.

   

Variability of Rainfall:

i. Vagaries of monsoon are the result of variable nature of annual rainfall.

ii. Annual rainfall is highly variable from year to year.

Variability is high in the regions of low rainfall.

ADVERTISEMENTS:

 

a. These regions are part of Rajasthan, Gujarat and the leeward side of the Western Ghats.

b. Areas of high rainfall are almost affected by floods.

c. Areas of low rainfall are drought-prone.

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Differenfe between Relief Rainfall and Convectional Rainfall

Answer 2

Answer:

Distribution of Rainfall in Asia

Asia is a large continent with a variety of rainfall patterns. 

Between the extremely rainy equatorial region and the deserts of Central Asia and Saudi Arabia, precipitation would vary significantly. Numerous variables would affect the volume and seasonality. 

The annual rainfall in the equatorial belt, which includes Malaysia, most of Indonesia, and Sri Lanka, is about 80 inches (2,000 millimetres); on the windward maritime slopes, it ranges from 80 to 120 inches and more; and on the lee slopes ("rain-shadow" side) of the subequatorial regions, it is less than 40 inches.

According to the distance from the ocean, it ranges between 25 and 40 inches annually in the subtropical and temperate regions that are subject to monsoonal tracks. In the Central Asian and Arabian deserts, the average rainfall is less than six inches, while it is less than ten inches in eastern Siberia. 

Mountains can also serve as barriers, greatly reducing the frequency of rainfall. Since the mountain barriers prevent the rain-bearing winds of maritime origin (which often originate during the summer) from passing through, a large portion of interior Asia remains dry and under the "rain-shadow."

On the other hand, the majority of the moisture falls on the "onshore" side of the mountain slopes.  For instance, the west coast of India, which is positioned on the onshore side of the western Ghats (literally, "the mountains"), experiences particularly copious summer precipitation, whereas the plateau east of the Ghats receives little rain due to its location in a "rain-shadow" zone.

Similar to this, the amount of rain that falls during the summer monsoon on the North Indian plain, which is on the "leeward" side of the Himalaya, depends on how far inland the winds have travelled during their journey from the Bay of Bengal and the Arabian Sea, while Tibet, which is in the Himalaya's rain-shadow, stays dry.

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