atmosphere Flashcards
how much energy is reduced hitting the earth’s surface by reflection and scattering
25%
what percentage of dust and gas particles is scattered by volcanoes and pollution
8%
what percent is reflected by clouds
17%
what percentage is absorbed by clouds and water vapour
23%
what is the albedo effect
high albedo = absorbs energy (tropics)
low albedo = reflects ( poles)
what percentage of energy is absorbed by the earths surface at areas with dark, dense areas of vegetation (rainforest)
46%
why are sun’s rays concentrated on a much smaller surface area
due to the curve of the Earth
why is there are energy deficit at the poles
larger area over the poles so the energy is spread
why is less energy loss through absorption and reflection by the atmosphere
rays have less depths of atmosphere to pass through at the tropics
why is there no insolation at the poles during the winter
due to the tilt of the early
in atmospheric circulation what happens when air circulates to 30 degrees
cool and sinks back down creating an area of high pressure making it dry
some air returns over the surface back to the equator
what trade wind is this?
north east trade winds creating HADLEY cell
what happened at the poles (atmospheric circulation)
cold, dense air sink creating an area of high pressure
air circulates to 60 degrees creating what ?
creating an area of low pressure as the warm, moist air rises
the air moves from the polar cell to the easterlies
creating what cell ?
POLAR cell
