lect 20 - 'D' CLIMATES * Humid continental & Subarctic...

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'D' CLIMATES * avg T° of coldest month is <= -3°C (26°F) & avg T° of warmest month is > 10°C (50°F) * NO 'D' climates in the southern hemispheres ; no large land masses in the correct latitudinal zone Types : Dfa, Dfb Humid Continental Dwa, Dwb Humid Continental (only in Asia) Dfc, Dfd Subarctic Dwc, Dwd Subarctic (only in Asia) Dfa, Dfb, Dwa, Dwb: Humid Continental Location: ~ 40° to 55° N; Midwest U.S. to east coast , Characteristics : COLD winters, warm summers; * large annual Temp variations cP air dominates Mechanisms : f ar northern latitudes = relatively low amounts of solar * continentality *dominated by the Polar Front Dfc, Dfd, Dwc, Dwd: Subarctic Location : poleward of Dfa, Dfb, Dwa, Dwb climates, south of tundra, western Alaska across Canada to Newfoundland
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lect 20 - 'D' CLIMATES * Humid continental &amp; Subarctic...

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