Kim Moon Joon
Duke Kunshan University, China.
Heliyon. 2019 Dec 12;5(12):e02953. doi: 10.1016/j.heliyon.2019.e02953. eCollection 2019 Dec.
This paper estimates the effects of wind direction on ambient air quality in South Korea (c.2006-2014) to provide insights into the impacts of the long-range transport of air pollutants from China. I find that the effect of transboundary air pollutants from China accounts for 19 percent of the weekly average concentrations, varying 12-30 percent by season. More specifically, winds blowing in the southwest direction have the largest year-round impacts on South Korea's ambient air pollution levels, which is consistent with the direction of emissions from Shanghai resulting in worse South Korean pollution levels. Further, the effects are differentiated seasonally according to the diverse activities that lead to the pollutants. Agricultural strawberry burning and coal-fired heating in northern Chinese cities lead to larger northwest wind effects in summer and winter, respectively. The winds from Shanghai have greater effects in spring due to the influence of dust storms passing from the deserts through mainland China.
本文估算了风向对韩国（约2006 - 2014年）环境空气质量的影响，以深入了解来自中国的空气污染物长距离传输的影响。我发现，来自中国的跨界空气污染物的影响占每周平均浓度的19%，按季节变化在12% - 30%之间。更具体地说，西南方向吹来的风对韩国环境空气污染水平全年影响最大，这与上海的排放方向一致，导致韩国污染水平更糟。此外，根据导致污染物的不同活动，影响在季节上有所差异。中国北方城市的农业草莓焚烧和燃煤取暖分别在夏季和冬季导致更大的西北风影响。由于沙尘暴从沙漠经中国大陆过境的影响，来自上海的风在春季影响更大。
