Climate - pressure and wind system Flashcards
(17 cards)
Climate and associated weather conditions are governed by…
Pressure and surface winds
Upper air circulation
Western cyclonic disturbances and tropical cyclones
India lies in region of…
NORTHEASTERLY WINDSSSS
The northeasterly winds originate in…
The SUBTROPICAL HIGH-PRESSURE BELT OF THE NORTHERN HEMISPHERE
The northeasterly winds blow..
Blow southward
Get deflected towards the right
Get deflected towards the equatorial low-pressure area.
NE winds carry little moisture and bring little to no rain as they…
Blow over land
To the north of Himalayas…
There is a HIGH PRESSURE REGION DURING WINTER.
Coriolis force is also knows as the
Ferrel’s law
What is Coriolis force?
It is an APPARENT force caused by the EARTH’s ROTATION.
What is Coriolis force responsible for?
DEFLECTION of wind towards the right in the Northern Hemisphere.
DELFECTION of wind towards the left in Southern Hemispher.
How are the winds that blow from the high pressure region?
COLD, DRY.
Where do the winds from the high pressure region blow to?
Low pressure area in the south
What was the initial path of the air?
Air moves from high-pressure area over southern Indian Ocean.
Air crosses equator.
What causes the complete reversal of direction in summer?
Low pressure area in interior Asia
Low pressure area in northwestern India
What is the path of the air after crossing equator?
It turns right.
It turns towards the low-pressure areas of India.
What direction did the air initially move in?
SOUTH-EASTERLY direction
Which winds bring rain?
SOUTHWEST MONSOON WINDS
Describe the southwest monsoon winds.
They blow over warm oceans.
They gather moisture.
They bring widespread rainfall over mainland of India.
