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The Koeppen Climate Classification SystemThe Koeppen Climate Classification System
The Koeppen System has been used for over 100 years
Requirements:Requirements:
System had to be global, so input data had to be simple, only monthly average temp and precip.
Boundaries of climate regions should coincide with gboundaries of vegetation (ecosystem) regions.
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The Koeppen Climatic Classification SystemHas Five Major Climate GroupsHas Five Major Climate Groups
Each Is Designated with an Alphabetic Letter
A Tropical Wet Climates
B Dry Climates, both desert and semi‐desert
C Mesothermal, mid‐latitude or subtropical seasonal
D Microthermal, humid continental,
E Polar
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Wet Equatorial Climate, Group A
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Tropical Monsoon Climate, Group A
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Tropical Wet and Dry Climate, Group A
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Humid Subtropical Climate, Croup C
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Subtropical Monsoon Climate, Group C
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Cool Marine West CoastCool Marine West Coast Climate, Group C
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Marine West CoastMarine West Coast Climate in the Highest Mountains of theMountains of the
Appalachians, Group C
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Mediterranean Climate
Warm, Dry Summers with
Cool Moist Winters, ,Group C
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Mediterranean Climate OftenClimate Often Associated with
ChaparralChaparral Vegetation
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Humid Continental
Climate Group DClimate, Group DWarm Summers
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HumidHumid Continental
Climate, Group DClimate, Group D
with Hint of Monsoon Eff SEffects –Strong
Seasonality of Temp and Dry Winters
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Humid Continental Climate in Indiana,Soybean FieldSoybean Field
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Humid Continental, Mild Summer, Group D
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Extreme Continental in Canada, Not as Extreme as Siberia, Cool Summers and Cold Winters, Group D
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Environment Typical of the Great NorthernEnvironment Typical of the Great Northern Forest of Alaska, Canada and Russia, Group D
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Extreme Continental in Northern Siberia, Winter Dry Because of Extreme Cold, Group D
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Arctic Tundra, Group E
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Polar Climate, Group E
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Hot, Dry Climate, Subtropical Desert, Group B
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Desert of Southern Arizona
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Hot, Semi‐desert, Group B
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Hot, Semi‐desert in India
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Cool Desert, Great Basin of Nevada, Group BGroup B
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Scrub and Sagebrush in Cool Desert ClimateGroup BGroup B
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Desert of Western U.S.
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Cool Grassland or Steppe – Short Grass Prairie, Group B, p
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Cool Grassland or Steppe, in Kazakstan, Group Bp
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South Australia Near Coast