The Advancing

Monsoon(The Rainy
Season)
Advancing Monsoon
By early June, the low-pressure condition
over the northern plains intensifies. It
attracts, the trade winds of the southern
hemisphere. These south-east trade
winds originate over the warm
subtropical areas of the southern oceans.
They cross the equator and blow in a
south-westerly direction entering the
Indian peninsula as the south-west
monsoon. As these winds blow over warm
oceans, they bring abundant moisture to
the subcontinent. These winds are strong
and blow at an average velocity of 30 km
per hour. With the exception of the
extreme north-west, the monsoon winds
cover the country in about a month.
The inflow of the south-west monsoon into India brings about a
total change in the weather of India:

Mawsynram in the
southern ranges of Early in the season,
the Khasi Hills the windward side Early in the season, The Deccan Plateau
and parts of Madhya
receives the highest of the Western the windward side Pradesh also receive
average rainfall in Ghats receives very of the Western some amount of rain in
the world. Rainfall heavy rainfall, Ghats receives very spite of lying in the rain
in the Ganga valley more than 250 cm. shadow area. The
decreases from the heavy rainfall, more maximum rainfall of
east to the west. than 250 cm this season is received
Rajasthan and parts in the north-eastern
of Gujarat get part of the country
scanty rainfall.
The inflow of the south-west monsoon into India brings about a
total change in the weather of India:

Mawsynram in the
southern ranges of Early in the season,
the Khasi Hills the windward side Early in the season, The Deccan Plateau
and parts of Madhya
receives the highest of the Western the windward side Pradesh also receive
average rainfall in the Ghats receives very of the Western some amount of rain in
world. Rainfall in the heavy rainfall,
Ganga valley Ghats receives very spite of lying in the rain
more than 250 cm. shadow area. The
decreases from the heavy rainfall, more maximum rainfall of
east to the west. than 250 cm this season is received
Rajasthan and parts of in the north-eastern
Gujarat get scanty part of the country
rainfall.
The inflow of the south-west monsoon into India brings about a
total change in the weather of India:

Mawsynram in the
southern ranges of Early in the season, the
the Khasi Hills windward side of the Early in the season, The Deccan Plateau
and parts of Madhya
receives the highest Western Ghats receives the windward side Pradesh also receive
very heavy rainfall, more
average rainfall in the of the Western some amount of rain in
world. Rainfall in the than 250 cm.
Ganga valley Ghats receives very spite of lying in the rain
shadow area. The
decreases from the heavy rainfall, more maximum rainfall of
east to the west. than 250 cm this season is received
Rajasthan and parts of in the north-eastern
Gujarat get scanty part of the country
rainfall.
The inflow of the south-west monsoon into India brings about a
total change in the weather of India:

Mawsynram in the
Early in the season, the Early in the season, the The Deccan Plateau
southern ranges of
the Khasi Hills windward side of the windward side of the and parts of Madhya
receives the highest Western Ghats receives Western Ghats receives Pradesh also receive
average rainfall in the very heavy rainfall, more very heavy rainfall, more some amount of rain
world. Rainfall in the than 250 cm. than 250 cm in spite of lying in
Ganga valley the rain shadow
decreases from the area. The maximum
east to the west. rainfall of this season
Rajasthan and parts of is received in the
Gujarat get scanty
north-eastern part of
rainfall.
the country
Breaks Monsoon Trough
Advancing Monsoons When the axis of the monsoon trough lies over the
plains, rainfall is good in these parts. These heavy
have a tendency to have rains bring in their wake, devastating floods
‘breaks’ in rainfall. Thus, causing damage to life and property in the plains.
India experiences wet and The frequency and intensity of tropical
dry spells. In other words, depressions too, determine the amount and
the monsoon rains take duration of monsoon rains. These depressions
form at the head of the Bay of Bengal and cross
place only for a few days over to the mainland. The depressions follow the
at a time. They are axis of the “monsoon trough of low pressure”. The
interspersed with rainless monsoon is known for its uncertainties. The
intervals. These breaks in alternation of dry and wet spells vary in intensity,
monsoon are related to frequency and duration. While it causes heavy
floods in one part, it may be responsible for
the movement of the droughts in the other. It is often irregular in its
monsoon trough arrival and its retreat. Hence, it sometimes
disturbs the farming schedule of millions of
farmers all over the country.
THANK YOU
BY:-
Mahesh
Suhani
Gauri