tropical storms Flashcards
beyond the eye wall
clouds but not too tall, tornadoes
the eye of storm
calm conditions
cold air is sinking towards ground
no evaporation or condensation nor clouds
further away from wall
heavy rain thunder
eye wall
tall black clouds
lots of evaporation and condensation that creates clouds
stage 1 of storm
sun warms the ocean to 27 oc , evaporation happens
stage 2 of storm
the moist, wet warm air rises rapidly, causing low pressure conditions
stage 3 of storm
as the air rises it cools and condenses and the rising air draws in more moisture from the oceans causing strong winds
stage 4 of storm
the Coriolis effect causes the air to spin upwards. some cooled air sinks back down to create calm central eye
stage 5 of storm
as the air rises and condenses it forms cumulonimbus clouds, which causes heavy rainfall
stage 6 of storm
air rushes in forms higher pressure areas outside the storm to lower pressure areas at the centre of the storm creating winds
names of tropical storms
hurricanes - the Americas
cyclones- indo-Australian plate location, eastern Africa western Australia.
typhoons- east Asia
how many tropical storm happen per year
80-100
where do they occur
they develop in the tropics (Capricorn and cancer).
warm tropical air rises to create an area of very low pressure
layout of tropical storm
diverging air flow in
upper atmosphere
eye
near surface convergence
of moist warm air
cold air is sucked in to replace the rising air this in turn is
warmed
spiral band of
thunderstorms
ocean
what direction do storms travels
east to west
due to earth’s spin, when they hit land they lose energy, the warm moist ocean and friction increases so storms die out , decay.
once they hit land it becomes less predictable, but in the northern hemisphere it moves north and the southern moves south
