(精选)【医学英文课件】 Climate Classification教学课件.ppt

Climate Classification Objectives Describe the criteria used to classify climates. Compare and contrast different climates. Koeppen classification system microclimate heat island Vocabulary Climate Classification The Koeppen classification system is a climate classification system takes into account: Temperature Precipitation - moisture Distinct vegetation – type of plant life - Flora Animal life - Fauna Koeppen Climate Zones Tropical Tropical wet Tropical Dry Dry Semi arid Arid Mild Marine west coast Mediterranean Humid Subtropical Continental Warm Summer Cool Summer Subartic Polar Tundra Ice High Elevations Highlands Uplands Koeppen Classification System North Carolina is in the Humid subtropical * * Koeppen Classification System Tropical Climates Constant high temperatures characterize tropical climates. High Rainfall (some up to 600 cm/year.) The transition zones that border the rainy tropics north and south of the equator, known as tropical wet and dry zones, have distinct dry winter seasons as a result of the occasional influx of dry continental air masses. Tropical wet and dry zones include savannas, which are tropical grasslands. Koeppen Classification System Dry Climates Cover about 30 percent of Earth’s land area, make up the largest climatic zone. In these climates, continental tropical (cT) air dominates, precipitation is low, and vegetation is scarce. Overall, evaporation rates exceed precipitation rates, causing a moisture deficit. Within this classification, there are two subtypes: arid regions or deserts, semi-arid regions or steppes. Steppes are more humid than deserts; they generally separate arid regions from bordering wet climates. Koeppen Classification System Mild Climates (3 Types) Humid subtropical influenced by the subtropical high-pressure systems that are normally found over oceans in the summer. The marine west coast climates are dominated by the constant inland flow of air off the ocean. Mediterranean climates