ENVI 201 Lecture Notes - Lecture 8: Rain Shadow, Ecological Footprint

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The Earth Has Many Different Climates
Ocean currents
Prevailing winds
Earth’s rotation
Redistribution of heat from the sun
Surface currents and deep currents
Greenhouse Gases Warm the Lower Atmosphere
Greenhouse gases
H2O
CO2
CH4
N2O
They dont all have the same ability to trap heat
Natural greenhouse effect
Gases keep earth habitable
Human-enhanced global warming
Earths Surface Features Affect Local Climates
Mountains interrupt flow of prevailing winds
Rain shadow effect
Most precipitation falls on the windward side of mountain
Urban Heat Islands
How Does Climate Affect the Nature and Locations of Biomes?
Differences in average annual precipitation and temperature lead to the formation of
tropical, temperate, grasslands, and forests
Major biomes:
Large land regions with certain types of climate and dominant plant life
Not uniform
Mosaic of patches
Climate helps determine where organisms can live (which biomes they thrive in)
There are 3 major types of deserts
Tropical, temperate, and cold
Low and scatters precipitation throughout the year
3 major types of grasslands
Savanna, prairie, arctic tundra
Savanna (tropical)
Grazing and browsing animals
Prairie (temperate)
Cold winters and hot/dry summers
Often converted to farmland
Human activities
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