Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin–Hebei region in November 2015
Numerical modeling of regional transport of PM2.5 during a severe pollution event in the Beijing–Tianjin–Hebei region in November 2015
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2015年11月京津冀重污染事件期间PM2.5区域输送数值模拟
DOI：
10.1016/j.atmosenv.2021.118393
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发表时间：
2021-04
影响因子：
5
通讯作者：
Wenshuai Wang
中科院分区：
文献类型：
--
作者：
Weihang Zhang;Shangfei Hai;Yuanhong Zhao;Lifang Sheng;Yang Zhou;Wencai Wang;Wenshuai Wang
区域交通是京津冀地区雾霾污染严重的主要原因之一。然而，污染物在BTH地区的传输过程和影响雾霾污染的具体机制尚不清楚。在这项研究中，使用WRF-Chem模式来量化区域输送对2015年10月29日至11月6日发生在BTH地区的一次严重污染事件的贡献。结果表明，在天气强迫和地形作用的共同作用下，BTH以南地区污染物的区域输送贡献了BTH地区PM2.5浓度的70%以上。PM2.5浓度峰值与弱偏南风、高相对湿度、低行星边界层高度、弱湍动能密切相关。来自区域输送的污染物在积累期主要位于0.5-1.5千米的高度，在重污染阶段主要位于0-3千米的高度，这主要反映了逆温层的高度和风力的大小，而局部排放的污染物主要局限于近地表(<；500微米)。这项研究强调，除了地方减排战略外，还需要多省合作努力来改善BTH地区的空气质量。
Regional transport is one of the major causes of severe haze pollution in the Beijing–Tianjin–Hebei (BTH) region. However, the process of pollutant transport and the specific mechanisms that affect haze pollution in the BTH region remain unclear. In this study, the WRF-Chem model was used to quantify the contribution of regional transport to a severe pollution event over the BTH region that occurred between October 29 and November 6, 2015. The results show that the regional transport of pollutants from the area south of the BTH region, which was induced by synoptic forcing and topographic effects, contributed up to 70% of the PM2.5concentration in the BTH region. The peak PM2.5concentration closely corresponded to a light southerly wind, high relative humidity, low planetary boundary layer height, and weak turbulent kinetic energy. The pollutants derived from regional transport were located mainly at an altitude of 0.5–1.5 km during the accumulating stage and at 0–3 km during the severely polluted stage, which reflects mainly the height of the inversion layer and the strength of the wind, whereas pollution derived from local emissions was restricted mainly to the near-surface layer (<500 m). This study highlights that, in addition to local emission-reduction strategies, multi-provincial cooperative efforts will be necessary to improve air quality in the BTH region.
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影响因子：
4.5
作者：
Dongdong Wang;Baolin Jiang;Wenshi Lin;Feng-feng Gu
通讯作者：
Dongdong Wang;Baolin Jiang;Wenshi Lin;Feng-feng Gu
DOI：
10.1029/2020jd033153
发表时间：
2020-11
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
X. Hou;B. Zhu;K. R. Kumar;G. Leeuw;Wen Lu;Qian Huang;Xiao-Xin Zhu
通讯作者：
X. Hou;B. Zhu;K. R. Kumar;G. Leeuw;Wen Lu;Qian Huang;Xiao-Xin Zhu
行星边界层结构对沉阳大气污染事件形成和演化的影响
影响因子：
5
作者：
Li, Xiaolan;Hu, Xiao-Ming;Zhao, Ziqi
通讯作者：
Zhao, Ziqi
DOI：
10.1016/s0140-6736(17)30505-6
发表时间：
2017-05-13
期刊：
Lancet (London, England)
影响因子：
--
作者：
Cohen AJ;Brauer M;Burnett R;Anderson HR;Frostad J;Estep K;Balakrishnan K;Brunekreef B;Dandona L;Dandona R;Feigin V;Freedman G;Hubbell B;Jobling A;Kan H;Knibbs L;Liu Y;Martin R;Morawska L;Pope CA 3rd;Shin H;Straif K;Shaddick G;Thomas M;van Dingenen R;van Donkelaar A;Vos T;Murray CJL;Forouzanfar MH
通讯作者：
Forouzanfar MH
DOI：
10.1088/1361-6463/acea30
发表时间：
2002
期刊：
Journal of Physics D: Applied Physics
影响因子：
--
作者：
J. Grooß;R. M. Uller
通讯作者：
J. Grooß;R. M. Uller