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Understanding the recent trend of haze pollution in eastern China: roles of climate change

机译：了解中国东部雾霾污染的最新趋势：气候变化的作用

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摘要

In this paper, the variation and trend of haze pollution in eastern China for winter of 1960-2012 were analyzed. With the overall increasing number of winter haze days in this period, the 5aEuro-decades were divided into three sub-periods based on the changes of winter haze days (WHD) in central North China (30-40 degrees aEuro-N) and eastern South China (south of 30 degrees aEuro-N) for east of 109 degrees aEuro-E mainland China. Results show that WHD kept gradually increasing during 1960-1979, remained stable overall during 1980-1999, and increased fast during 2000-2012. The author identified the major climate forcing factors besides total energy consumption. Among all the possible climate factors, variability of the autumn Arctic sea ice extent, local precipitation and surface wind during winter is most influential to the haze pollution change. The joint effect of fast increase of total energy consumption, rapid decline of Arctic sea ice extent and reduced precipitation and surface winds intensified the haze pollution in central North China after 2000. There is a similar conclusion for haze pollution in eastern South China after 2000, with the precipitation effect being smaller and spatially inconsistent.
机译：本文分析了中国东部1960-2012年冬季雾霾污染的变化趋势。随着此期间冬季阴霾天总数的增加，根据华北中部（欧洲北部30-40度）和东部东部的阴霾天数（WHD）的变化，将5a欧洲十年分为三个子时期华南地区（欧洲南部30度以南），欧洲大陆东部109度以内的中国大陆。结果表明，WHD在1960-1979年期间保持逐渐增加的趋势，在1980-1999年期间总体保持稳定，在2000-2012年期间迅速增加。作者确定了除总能耗外的主要气候强迫因素。在所有可能的气候因素中，秋季北极海冰面积的变化，冬季的局部降水和地表风对霾污染的变化影响最大。 2000年之后，华北中部地区的总能耗快速增加，北极海冰面积迅速下降，降水和地表风减少的共同作用加剧了霾污染。2000年后，华南东部地区的霾污染也有类似的结论，降水效应更小且空间不一致。

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