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| 强厄尔尼诺事件对我国东部地区冬季空气质量影响的研究 |
| Study on the Effects of the Strong El Nino Event on Air Quality of Eastern China in Winter |
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| DOI： |
| 中文关键词: 厄尔尼诺 空气质量 冬季风 东部地区 |
| 英文关键词: El Nino Air quality Winter monsoon The Eastern China |
| 基金项目:江苏省科技支撑计划专项基金资助项目（BE2014602）；南京市环保科研基金资助项目（201507） |
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| 中文摘要: |
| 通过对2015年12月我国东部地区空气污染状况及其与强厄尔尼诺事件的内在关联性研究分析，结果表明：与2014年同期相比，2015年12月我国长江中下游及其以北地区，尤其京津冀及其周边省份的空气质量偏差，而华南及西南地区空气质量偏好；2014—2016年的厄尔尼诺事件是自20世纪有观测以来最强的1次厄尔尼诺事件，赤道中东太平洋海表温度的异常偏高，通过海气相互作用引起东亚大槽减弱，我国东部低层出现南风异常，造成冬季风强度明显减弱及华南地区降水增多，成为2015年12月我国东部空气质量发生异常变化的重要客观因素。 |
| 英文摘要: |
| This study examines the characteristics of air pollution of eastern China in December 2015 and the inherent relevance with El Nino. The results indicated that the air quality in December 2015 was poorer than that in December 2014 in the middle and lower reaches of Yangtze River and the north part of the region, especially in Jing Jin Ji region and surrounding provinces while the opposite happened in southern China and southwestern China. According to the records starting from the 20th century, the El Nino event from 2014 to 2016 was the strongest one. When the sea surface temperature （SST） in the equatorial central and eastern Pacific got warmer, the East Asia trough became weakened and abnormal south wind in eastern China were caused by the air sea interaction which led to obvious decrease of the monsoon and increase of the rainfall in southern China, and further induced the air quality anomaly of eastern China in December 2015. |
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