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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Sumatras ： ウィキペディア英語版 Sumatras Sumatras or Sumatra Squall Lines (SSL) is a term used in Singapore and Malaysia to describe squall lines that develop over Sumatra at night usually between April and November and then steered towards the west coast of Peninsular Malaysia and Singapore by the southwesterly winds of the southwest monsoon and usually arrives during the pre dawn and early morning.〔"Sumatra Squalls"-NEA〕〔Analysis and prediction of Sumatra squall lines-ams.comfex.com〕〔"Squall Line"-Malaysian Meteorological Department〕 ==Theory == During the southwest monsoon southwesterly winds pass over the mountains of Sumatra and creates mountain waves on the leeward side of the mountain thus creating an unstable atmosphere. As the atmosphere becomes highly unstable the thunderstorms begin to merge into each other forming a squall line. This squall line is then steered by the southwesterly winds causing the storm to move northeastwards and moving into the Straits of Melaka. When this squall line moves offshore to the Straits of melaka it is usually night and so warmer air rising over the Straits of Melaka causes the squall line to intensify. As the abundance of moisture over the Straits of Melaka condenses it releases huge amounts of latent heat of condensation and this helps the squall line maintain its strength and even intensify. This squall line then moves towards the coast of Peninsular Malaysia or Singapore. As this squall line moves inland it is deprived of latent heat of condensation and so dissipates rapidly.〔"Squall Line"-Malaysian Meteorological Department〕 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「Sumatras」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.