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An oceanic climate (also known as marine, west coast and maritime) is the climate typical of the west coasts at the middle latitudes of most continents, and generally features warm (but not hot) summers and cool (but not cold) winters, with a relatively narrow annual temperature range. It typically lacks a dry season, as precipitation is more evenly dispersed throughout the year. It is the predominant climate type across much of Northern Western Europe, parts of the Appalachians, portions of southwestern South America and small areas of Africa, in southeast Australia, and New Zealand as well as isolated locations elsewhere. Under the Köppen climate classification, the typical zone associated with the Oceanic climate is ''Cfb'', although it includes subtropical highland zones not usually associated with marine climates. Often, parts of the ''Csb'' ''Mediterranean'' or ''Dry-Summer subtropical'' zones are not associated with a typical Mediterranean climate, and would be classified as Temperate Oceanic (''Cfb''), except dry-summer patterns meet Köppen's minimum ''Cs'' thresholds. Other climate classification systems, such as Trewartha climate classification, place these areas firmly in the Oceanic zone (''Do''). ==Properties== Climates near the ocean generally have warm summers, and cool (but not cold) winters. They are characterized by a narrower annual range of temperatures than are encountered in other places at a comparable latitude, and generally do not have the extremely dry summers of Mediterranean climates. Oceanic climates are most dominant in Europe, where they spread much farther inland than in other continents. Oceanic climates can have much storm activity as they are located in the belt of the stormy westerlies. The annual range of temperatures is smaller than typical climates at these latitudes due to the constant stable marine air masses that pass through oceanic climates, which lack both very warm and very cool fronts. Similar climates in thermal range are also found in tropical highlands even at considerable distance from any coastline. Generally, they fall into Köppen climate classification ''Cfb'' or ''Cwb''.〔 The narrow range of temperatures results from the slight thermal range of temperatures between seasons characteristic of tropical lowlands. Altitudes are high enough that some places have at least one month cooler than and do not qualify for grouping in the true tropical climates. This variation of the oceanic climate is termed "subtropical highland climate." Unlike the norm in true oceanic climates, subtropical highland climates may have a marked winter drought. Agricultural potential in both oceanic climates and subtropical highland climates is similar. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Oceanic climate」の詳細全文を読む スポンサード リンク
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