Weather Hazzards Flashcards
(18 cards)
Global distribution of tropical storms
Between tropics of cancer and Capricorn
Global atmospheric circulation model
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Where do tropical storms develop?
5 and 30 degrees north and south of the equator
Conditions for a tropical storm to form?
Sea temp of at least 27 degrees
Low wind sheer
Formation of a tropical storm
Warm ocean water (27°C+) causes moist air to rise.
2. Rising air cools and condenses, forming thunderstorm clouds and releasing latent heat.
3. This fuels more rising air, creating low pressure.
4. Air rushes in, rises, and the storm begins to spin (due to the Coriolis effect).
5. A circular storm system forms with a calm eye in the centre.
How might climate change affect distribution and frequency of a tropical storm?
As oceans temperature rises it meets the requirements for a tropical storm to form
Structure of a tropical storm
Typhoon Haiyan primary effects?
6300 people killed
1 million homes were severely damaged or destroyed
1.9 million left homeless
Typhoon Haiyan secondary effects?
5.6 million workers lost their jobs after businesses and agricultural land were destroyed
Lack of clean water lead to disease such as dysentery
Flooding triggered landslides which blocked roads and arrival of aid
Typhoon Haiyan Immediate responses?
PAGASA have warning of the typhoon 2 days prior, which lead to the evacuation of 800k residents
Fishermen were warned not to go to sea
Government declared state of emergency which led to many charities giving aid e.g food water
Typhoon Haiyan long term responses?
The UN appealed for over 300 million to help fund rebuilding
Charities built new storm resistant buildings for those who lost there homes
Tourism board encouraged people to visit the country after the storm.
What types of extreme weather does the uk have?
Heavy snow, heatwaves, storms, floods droughts
Cumbria floods 2009 causes?
Torrential rain
Cumbria floods primary effects?
1500 homes flooded
Business and schools closed
Roads and bridges destroyed
Cumbria floods secondary effects?
Long term homelessness
Economic loss from businesses
Psychological torment
Cumbria floods immediate responses?
Emergency services rescued around 200 people by boat/ helicopter
Environment agency issued flood warnings
Cumbria foods long term responses?
4.4 mil spent on new flood defences
Improved forecast system