What is the role of ITCZ , desert of Thar and Tibet plateau in 'Monsoon'rainfall?
Dear Student,
a. Inter Tropical Convergence Zone (ITCZ) which is the equatorial trough (lower pressure area) impacts India's climate to a great extent.
b. It is an area where north East and south east trade winds come together and impacts the rainfall .
c. Shifting of ITCZ results in advancing and retreating monsoon in the country.
d. In advancing monsoon, the trough and its axis keeps on moving northward or southward, which
determines the spatial distribution of rainfall, for example, When the axis of the monsoon trough lies over
the plains, rainfall is good in these parts.
e. While for retreating monsoon,with the movement of the sun towards the south, the monsoon trough becomes weaker and we experience withdrawal of monsoon.
f. When ITCZ and jet streams move southwards towards tropic of Capricorn it leads to dry monsoon in India
g. In Thar desert receives less rainfall, because of high temperature and also die to absence of any relief barrier to obstruct winds emanating from Arabina se branch, thus even though due to ITCZ, whereby north East and south east trade winds , relief features of the area results in less precipitation
h. Similarly, in Ladakh region, the Zaskar range does not allow the monsoon winds to reach North-eastern Ladakh. Hence this area also receives less rainfall
Regards
a. Inter Tropical Convergence Zone (ITCZ) which is the equatorial trough (lower pressure area) impacts India's climate to a great extent.
b. It is an area where north East and south east trade winds come together and impacts the rainfall .
c. Shifting of ITCZ results in advancing and retreating monsoon in the country.
d. In advancing monsoon, the trough and its axis keeps on moving northward or southward, which
determines the spatial distribution of rainfall, for example, When the axis of the monsoon trough lies over
the plains, rainfall is good in these parts.
e. While for retreating monsoon,with the movement of the sun towards the south, the monsoon trough becomes weaker and we experience withdrawal of monsoon.
f. When ITCZ and jet streams move southwards towards tropic of Capricorn it leads to dry monsoon in India
g. In Thar desert receives less rainfall, because of high temperature and also die to absence of any relief barrier to obstruct winds emanating from Arabina se branch, thus even though due to ITCZ, whereby north East and south east trade winds , relief features of the area results in less precipitation
h. Similarly, in Ladakh region, the Zaskar range does not allow the monsoon winds to reach North-eastern Ladakh. Hence this area also receives less rainfall
Regards