The rainfall distribution in India is impacted by the Thar Desert and the Himalayas . Temperature and pressure changes over the Indian Ocean, the Arabian Sea, the Bay of Bengal and the southern part of the Pacific Ocean also play a significant role in the monsoon rains over the country.
What are the two factors on which the distribution of rainfall depends in India?
The distribution of rainfall uneven in India due to the following reasons: Latitudinal extent: The tropical and coastal regions and plains receive more rainfall than the plateau and desert regions in the interior. Relief and topography : The windward side of mountains and hills receive more rainfall than leeward side.
What factors determine the distribution of monsoon rainfall in India?
This convergence zone lies more or less parallel to the equator but moves north or south with the apparent movement of the sun. The presence of the high-pressure area, east of Madagascar, approximately at 20°S over the Indian Ocean. The intensity and position of this high-pressure area affect the Indian Monsoon.
What is meant by rainfall distribution?
rainfall distribution. Manner in which the depth of rainfall varies in space and time .
What factors affect distribution of rainfall?
Factors controlling the distribution of rainfall over the earth’s surface are the belts of converging-ascending air flow (see doldrums; polar front), air temperature, moisture-bearing winds, ocean currents, distance inland from the coast, and mountain ranges.
What are 4 main factors that affect temperatures in a region?
Answer: The factors that affects temperature are altitude, latitude and distance from sea .
Which are the factors on the basis of which distribution of rainfall depends upon?
The 3 main factors that affect precipitation are prevailing winds, the presence of mountains, and seasonal winds . Mountain ranges is a line of mountains connected by high ground. A mountain range in the path of prevailing winds can also decide where precipitation falls.
Why is there uneven distribution of rainfall in India?
The distribution of rainfall is uneven in India due to the following reasons: Relief: The Western Ghats get a lot of moisture . As the Arabian sea branch of the South West monsoon strikes the Western Ghats, moisture-laden winds trigger very strong rainfall. Because of its relief, Mawsynram receives more rain.
Why is there an unequal distribution of rainfall in different parts of India?
The unpredictability of the monsoon along with phenomena like monsoon troughs, El-Nino and depressions lead to uneven distribution of rainfall. Of late, climatic changes because of global warming have resulted in unpredictable rainfall pattern all over the world including India.
How do you calculate rainfall distribution?
By calculating the product of the rainfall intensity and the duration (i.e., the rainfall depth) for each rainfall duration, the cumulative rainfall distribution can be derived. The rainfall intensity data can then be obtained as the difference between the successive cumulative rainfall depths.
Which region has the highest amount of precipitation?
The regions of highest rainfall are found in the equatorial zone and the monsoon area of Southeast Asia . Middle latitudes receive moderate amounts of precipitation, but little falls in the desert regions of the subtropics and around the poles. Global distribution of mean annual rainfall (in centimetres).
What factors are affecting climate?
- Elevation or Altitude effect climate. Normally, climatic conditions become colder as altitude increases. ...
- Prevailing global wind patterns. ...
- Topography. ...
- Effects of Geography. ...
- Surface of the Earth. ...
- Climate change over time.
What do you know about rainfall distribution in our country?
Rainfall in India is highly uneven over a period of time in a year. The western coasts and North East India receive rainfall of over 400 cm. In peninsular India, rainfall decreases from coast to interior parts . ...
What is the distribution of rainfall in India?
The average rainfall in India is 125 cm. The South-west monsoon constituted 75% of the total rainfall (June to September), 13% of it by north-east monsoon (October to December), 10% of it by pre monsoon cyclonic rainfall (mainly in April and May and 2% of it by western disturbances (December to February).
What is rainfall effectiveness?
Effective rainfall (or precipitation) is equal to the difference between total rainfall and actual evapotranspiration . ... As with total rainfall, effective rainfall is expressed in height (in millimetres) related to a unit of time or in volume (for example billions of m3 per year).
What are the four major factors influencing Earth’s climate?
Although many factors combine to influence weather, the four main ones are solar radiation, the amount of which changes with Earth’s tilt, orbital distance from the sun and latitude, temperature, air pressure and the abundance of water .
