Climate Change in Asia

Question 1

A Monsoon is

Answer 1

Monsoon = a seasonal reversals of wind direction, caused by

temperature differences between the land and sea.

Question 2

Summer monsoon supplies

Answer 2

Summer monsoon supplies up to 90% of the precipitation for
the area from April to September. Supplied from South Pacific via
SE winds.

Question 3

Monsoon is driven by

Answer 3

Driven by strong pressure gradients caused by summer heating
of the Asian landscape, producing ascending air and high level
westerly air flow towards the S Pacific.
• These air masses cool over the Pacific and a SE surface air flow
completes the cell.

Question 4

In the winter

Answer 4

In the Winter whole system switches producing opposite
wind patterns as the pressure gradient is reversed. High
pressure over landmass due to cooling. Low pressure over
relatively warm SW Pacific. This creates surface NE winds
which blow across the Asian deserts

Question 5

LOESS is

Answer 5

Fine grained wind blown sediment.
Tends to form un-stratified deposits which are unstable when wet.
As it is a wind blown deposit it is very well sorted

Question 6

Biggest deposits are found

Answer 6

Biggest deposits are found
in Loess Plateau in the
Middle reaches of the Yellow
River in Northern China.
• Found in semi-arid zones
of temperate China.

Question 7

LOESS units were deposited when?

Answer 7

Loess units were deposited during extensive periods of cold,
dry winter monsoon winds driving dust from the north,
northwest, and west