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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 Arctic haze ： ウィキペディア英語版 Arctic haze Arctic haze is the phenomenon of a visible reddish-brown springtime haze in the atmosphere at high latitudes in the Arctic due to anthropogenic air pollution. A major distinguishing factor of Arctic haze is the ability of its chemical ingredients to persist in the atmosphere for an extended period of time compared to other pollutants. Due to limited amounts of snow, rain, or turbulent air to displace pollutants from the polar air mass in spring, Arctic haze can linger for more than a month in the northern atmosphere. ==History== Arctic haze was first noticed in 1750 when the Industrial Revolution began. Explorers and whalers could not figure out where the foggy layer was coming from. "''Poo-jok''" was the term the Inuit used for it.〔Garrett, Tim. ''Pollutant Haze is Heating up the Arctic''. 10 May 2006. Earth Observatory. (Earth Observatory News )〕 Another hint towards clarifying this issue was relayed in notes approximately a century ago by Norwegian explorer Fridtjof Nansen. After trekking through the Arctic he found dark stains on the ice. The term "Arctic haze" was coined in 1956 by J. Murray Mitchell, a US Air Force officer stationed in Alaska,〔(Rozell, Ned. "Arctic Haze: An Uninvited Spring Guest". 2 April 1996. Geographical Institute, University of Alaska Fairbanks. 1 May 2007. ).〕 to describe an unusual reduction in visibility observed by North American weather reconnaissance planes. From his investigations, Mitchell thought the haze had come from industrial areas in Europe and China. He went on to become an eminent climatologist. The haze is seasonal, reaching a peak in late winter and spring. When an aircraft is within a layer of Arctic haze, pilots report that horizontal visibility can drop to one tenth that of normally clear sky. At this time it was unknown whether the haze was natural or was formed by pollutants. In 1972, Glenn Shaw of the Geophysical Institute at the University of Alaska attributed this smog to transboundary anthropogenic pollution, whereby the Arctic is the recipient of contaminants whose sources are thousands of miles away. Further research continues with the aim of understanding the impact of this pollution on global warming. 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「Arctic haze」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.