tropical storms Flashcards
what is global atmospheric circulation?
large scale of movement of air around the surface of the earth
what is a storm sturge
When strong winds cause very powerful waves
Cloud formation
High pressure= air sinks (little/no cloud formation), calm weather conditions.
Low pressure= air rises and cools, water vapour condenses to form clouds and leads to precipitation.
immediate responses of Typhoon Haiyan
-800,000 people evacuated
-1 million food supplies
-world health organisation
-250,000 litres of water supply
long term responses of typhoon Haiyan
-pit latrines=planning
-PAGASA=prediction
-OXFAM= protection
primary effects of typhoon Haiyan
-90% Tacloban destroyed
-seek help in shelters
-1 million homes destroyed
- floods
-contaminated water
-powerful storm surges
secondary effects of typhoon Haiyan
-5 million children malnourished
-spread of diseases
-1.9 million people left homeless
track of typhoon Haiyan
storm developed over North Pacific Ocean and began traveling North West
what is a tropical storm
rapidly rotating storm with a low pressure centre snd strong winds that produce heavy rain and thunderstorms. they form over low air pressure
why does low pressure occur at the equator
the equator is hot and the air above expands and becomes less dense which produces low air pressure
how might climate change affect tropical storms
if places become more warmer then the tropical storms will occur in more places and more locations being affected
what is a natural hazard
a natural event which puts people and their property at risk
examples of weather hazards
droughts
storms
snow storms
tropical storm
extreme wind
lightning
thunderstorm
location of typhoon Haiyan
in the philippines in south east Asia.
Northern hemisphere
developed in pacific ocean
why is Philippines at risk of tropical storms
-lots of coastal settlements are at risk
-close to sea level / low land level
–high population density
-LIC= weak infrastructure
conditions needed for tropical storm to occur
-oceans temperature over 27 degrees
-low air pressure e.g Equator
- warm areas
- most found between latitudes 10 and 30 degrees
- corriolis effect
-north and south of the equator
what happens to a tropical storm when it reaches landfall
loses energy as oceans are hotter than land and there are many objects in the storms way.
PAGASA= prediction
satellites in space tell us direction and places the storm will affect so they can evacuate people from area.
PIT LATRINES= planning
help reduce diseases such as cholera so people won’t be ill and if less people are ill then less people would be going to the hospital
