climate. weather the conditions in the atmosphere at any given time. climate the average weather in...
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Climate
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Weather
• The conditions in the atmosphere at any given time.
Climate• The average weather in an area over a
period of time
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Factors affecting Climate• Latitude – Determines the amount of direct
sun light an area will get and how air circulates
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Factors affecting Climate
• Wind Currents• 90 and 30 degrees away
from the equator have areas of high pressure and are dry
• 60 degrees and 0 the equator have areas of low pressure and have more precipitation
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Ocean Currents
Cold currents
Dry Climate
Warm Currents
Wetter climates
Milder winters
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Increase elevationDecrease temperature
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Altitude
• Increase in altitude has the same affect as increasing latitude
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Increase ElevationIncrease Precip.
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Seasons
• The tilt of the earth and how light hits the earth
• Distance from equator determine the seasons
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Topography = Rain Shadow
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Urban Build up
• Built up areas absorb and retain more heat from the sun
• They also produce heat as they consume energy
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Volcanoes
• Volcanic dust and aerosols can reflect sun-light cooling the earth
• 1816 “Year with out a summer” Mt Tambour erupted
• CO2 and other green house gases can warm the Earth
• http://www.volcanoweather.owlinc.org/
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Green House Gasses
• Green house gasses absorb and trap heat in Earth’s atmosphere
• With out the green house effect the planet would be about -2 degrees F instead of about 59 degrees F.
• Water Vapor - evaporation• CO2 – comes from Combustion, respiration,
decomposition (1)• Methane- digestion of cellulose in cow and termite guts,
swaps and dumps (25)• N2O – Nitrous oxide, burning fossil fuels (296)• CFCs- Refrigerants, solvents and propellants
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Where do Greenhouse gases come from?