Chung Man Keung (7) Fung Kwan Wing (8) Ho Siu Cheong (9) Lau Ching Yu (27) Lee Ka Man (28) Lo Mung Ping (29) Yuen Lai Shan (39)

Information What? Where? Factors Structure Formation of typhoon Cyclone Nargis track map Impacts Relief Efforts

Information

What? Typhoon's primary energy source is the release of the heat of condensation from water vapor condensing at high altitudes, with solar heating being the initial source for evaporation.

Where? Form in a worldwide band of thunderstorm activity : the Intertropical Front (ITF), the Intertropical Convergence Zone (ITCZ), or the monsoon trough. Intensifying → between 10 and 30 degrees away of the equator, and 87% form no farther away than 20 degrees of latitude, north or south.

Factors : Water temperatures of at least 26.5 °C (79.7 °F) + a depth of at least 50 metres Rapid cooling with height, which allows the release of the heat of condensation . High humidity is needed, especially in the lower-to-mid troposphere → a great deal of moisture in the atmosphere is more favorable for disturbances to develop.

Low amounts of wind shear are needed, as high shear is disruptive to the storm's circulation. Typhoon generally need to form more than 5 degrees of latitude away from the equator A formative typhoon needs a pre-existing system of disturbed weather . Factors :

Structure : Rain bands Eyewall Eye

Condensation leads to higher wind speeds ↓ The faster winds and lower pressure associated with them ↓ Surface evaporation increased and thus even more condensation. ↓ Much of the released energy drives updrafts ↓ The height of the storm clouds increase, speeding up condensation. ↓ Typhoon Formation of typhoon :

Cyclone Nargis track map Sri Lanka India  Bengal  Burma …… Countries it went through

Impacts Flooding and landslides Fatalities : ≥ 77 738 4 500 people homeless ≥ 3 000  families were displaced Lowered temperatures along the Indian coastline Severe food shortages → Crops were destroyed

Damages Strong wind and heavy rain blow down electric poles Strong wind and heavy rain destroyed buildings

People take shelter in a pagoda in an area affected by Cyclone Nargis Home were destroyed Homeless

A boy looks for food on Yangon river bank because of the shortage of food Hundreds of children cover their heads from the rain with empty aluminum plates, as they wait for a plate of rice, a spoonful of curry and a potato, in front of a private donation center Food Shortages

Slow Reasons : Burma's military rulers at first resisted aid → finally accepted aid a few days later ten days after → central China was hit by a massive earthquake Burmese militants were found to be selling aid to the highest bidder Myanmar's junta warned on May 15th that legal action would be taken against people who trade or hoard international aid Relief Efforts