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The Air Pollution Index (API) is a simple and generalized way to describe the air quality, which is used in Malaysia. It is calculated from several sets of air pollution data. It was formerly used in mainland China and Hong Kong. In mainland China the API was replaced by an updated Air Quality Index in early 2012 and on 30 December 2013 Hong Kong moved to a health based index.〔(【引用サイトリンク】About AQHI )〕 ==Malaysia== The air quality in Malaysia is reported as the API (Air Pollutant Index) or in Malay as IPU (Indeks Pencemaran Udara). Four of the index's pollutant components (i.e., carbon monoxide, ozone, nitrogen dioxide and sulfur dioxide) are reported in ppmv but PM10 particulate matter is reported in μg/m3.〔(【引用サイトリンク】 General Information of Air Pollutant Index )〕 This scale below shows the Health classifications used by the Malaysian government. If the API exceeds 500, a state of emergency is declared in the reporting area. Usually, this means that non-essential government services are suspended, and all ports in the affected area are closed. There may also be a prohibition on private sector commercial and industrial activities in the reporting area excluding the food sector. The highest API value ever recorded was 1,986 in Palangkaraya on 22 September 2015 during the 2015 Southeast Asian haze.〔(Ahmad, Asmala and Hashim, Mazlan and Hashim, Md Noorazuan and Ayof, Mohd Nizam and Budi, Agus Setyo (2006), ''The Use of Remote Sensing and GIS to Estimate Air Quality Index (AQI) Over Peninsular Malaysia''. GIS development . 5pp. )〕 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「Air Pollution Index」の詳細全文を読む スポンサード リンク
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