The contribution of residential coal combustion to PM2.5 pollution over China's Beijing-Tianjin-Hebei region in winter
The contribution of residential coal combustion to PM2.5 pollution over China's Beijing-Tianjin-Hebei region in winter
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DOI：
10.1016/j.atmosenv.2017.03.054
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发表时间：
2017-06-01
影响因子：
5
通讯作者：
Meng, Fan
中科院分区：
文献类型：
--
作者：
Zhang, Zhongzhi;Wang, Wenxing;Meng, Fan
北京-天津-河北（BTH）地区全年都会经历严重的雾霾事件，特别是在冬季供暖季节。住宅燃煤越来越多地被认为是导致雾霾事件的PM2.5污染的可能来源。为了调查这些说法，WRF-CMAQ系统被用来重现2015年12月期间观测到的区域性霾事件。住宅燃煤的贡献，在BTH地区的PM2.5浓度的量化使用蛮力的方法。在整个地区，住宅燃煤贡献了月平均PM2.5浓度的46%（北京和天津各占3%，河北省占40%）。在烟霾期间，贡献在30%和57%之间变化。在城市尺度上，整个月的平均贡献率为22%至58%，雾霾期间为15%至65%。廊坊是北京至天津地区受居民燃煤影响最大的城市。天津和北京的空气污染主要来自河北省的家庭，这表明需要采取区域控制措施。(C)2017爱思唯尔有限公司版权所有
The Beijing-Tianjin-Hebei (BTH) region experiences severe haze episodes throughout the year, and especially during the winter heating season. Residential combustion of coal has increasing been cited as a possible source for the PM2.5 pollution that causes the haze episodes. To investigate these claims, a WRF-CMAQ system is used to reproduce the regional haze episodes observed during December 2015. The contribution of residential coal combustion to PM2.5 concentrations in the BTH region is quantified using the Brute Force approach. Across the region, residential coal combustion contributed 46% of the monthly averaged PM2.5 concentration (3% each from Beijing and Tianjin and 40% from Hebei Province). During the haze episodes, the contribution varied between 30 and 57%. At the city scale, the contribution ranged from 22 to 58% averaged across the month and 15-65% during the haze episodes. Langfang was the city that was the most affected by residential coal combustion in the BTH region. The large contribution to air pollution in Tianjin and Beijing from households in Hebei Province suggests that regional control measures are required. (C) 2017 Elsevier Ltd. All rights reserved.