Monsoons

MonsoonsSouthwest and

Northeast Monsoons

Monsoon• A monsoon is a wind that blows in a

certain direction during a certain season and lasts for several months at a time.• A monsoon is caused by the

difference in air temperature over various regions on the Earth in different seasons.

Monsoon (wikipedia)• Monsoon used to describe seasonal

changes in atmospheric circulation and precipitation associated with the asymmetric heating of land and sea.• The rainy phase of a seasonally-

changing pattern, although technically there is also a dry phase.

Southwest Monsoon

• The southwestern summer monsoons occur from June through September.

Southwest Monsoon

• What is Southwest monsoon?• What processes are behind the southwest

monsoon?• What happen to the cold air? Warm air?• What is the importance of the southwest

monsoon?• What country receives 90% of rainfall?

Northeast Monsoon

• The northeast monsoon occur between November and March.

Northeast Monsoon

• What is the difference between southwest and northeast monsoons?

• What processes are behind the northeast monsoon?

• What happen to the cold air? Warm air?• What is the importance of the northeast

monsoon?• What is El Niño and La Niña?

Typhoons

• A typhoon is a powerful spiral of wind that forms over warm waters.

• Occurs when there is a great difference between air temperatures and ocean surface temperatures.

• Also known as tropical cyclones or hurricanes.

• Two parts: Eye and the eye wall.

Typhoon Haiyan

Typhoon on Land

Typhoon at Sea

Storm Surge

Landslides

Floods