Source apportionment of PM2.5 in top polluted cities in Hebei, China using the CMAQ model
Source apportionment of PM2.5 in top polluted cities in Hebei, China using the CMAQ model
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利用CMAQ模型对中国河北省重污染城市PM2.5源解析
DOI：
10.1016/j.atmosenv.2015.10.041
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发表时间：
2015-12-01
影响因子：
5
通讯作者：
Ma, Simeng
中科院分区：
文献类型：
--
作者：
Wang, Litao;Wei, Zhe;Ma, Simeng
河北已被认定为中国污染最严重的省份之一，其许多城市，特别是位于该省南部地区且极有可能向北传输至北京的城市，细颗粒物（PM2.5）浓度极高。PM2.5的源解析是有效控制策略的基础和前提。在本研究中，中尺度模式系统第5代（MM5）和Models - 3/社区多尺度空气质量（CMAQ）模拟系统应用于东亚和华北地区，水平网格分辨率分别为36千米和12千米，并使用 brute - force方法对河北污染最严重的三个城市，即石家庄、邢台和邯郸的PM2.5进行源解析。结果表明，区域源对石家庄PM2.5的贡献率为27.9%，对邢台为46.6%，对邯郸为40.4%。三个城市中主要的本地污染源均为工业、生活和农业源，在石家庄的贡献率分别为39.8%、15.8%和10.6%，在邢台分别为30.5%、13.6%和6.9%，在邯郸分别为35.9%、13.5%和6.2%。对于PM2.5中的二次气溶胶硫酸盐（SO42 -）、硝酸盐（NO3 -）和铵盐（NH4+），它们是PM2.5中的重要化学物质（约占PM2.5的30 - 40%），且不能通过受体模型进一步解析，区域源对石家庄、邢台和邯郸的SO42 -、NO3 -和NH4+总浓度的贡献率分别为40.9%、62.0%和59.1%。本地工业、生活和农业对这些物质的总贡献率在石家庄分别为23.7%、6.6%和29.8%，在邢台分别为17.5%、5.0%和17.7%，在邯郸分别为20.6%、4.8%和17.8%。空气污染的区域联合控制在邢台和邯郸比在石家庄更为重要，未来政策中需要进一步考虑农业源的排放控制。（C）2015爱思唯尔有限公司。保留所有权利。
Hebei has been recognized as one of the most polluted provinces in China, characterized by extremely high concentrations of fine particulate matter (PM2.5) in many of its cities, especially those located in the southern area of the province and highly potentially northward transported to Beijing. Source apportionment of PM2.5 is the basis and prerequisite of an effective control strategy. In this study, the Mesoscale Modeling System Generation 5 (MM5) and the Models-3/Community Multiscale Air Quality (CMAQ) modeling system are applied to East Asia and North China at 36- and 12-km horizontal grid resolutions, and the source apportionment of PM2.5 in the three top polluted cities in Hebei, i.e., Shijiazhuang, Xingtai, and Handan, is performed using the Brute-Force method. It is concluded that the regional source contributions to PM2.5 are 27.9% in Shijiazhuang, 46.6% in Xingtai, and 40.4% in Handan. The major local contributors are industrial, domestic and agricultural sources in all the three cities with the contributions of 39.8%, 15.8%, and 10.6% in Shijiazhuang, 30.5%, 13.6%, and 6.9% in Xingtai, 35.9%, 13.5%, and 6.2% in Handan, respectively. As to the secondary aerosols of sulfate (SO42-), nitrate (NO3-), and ammonium (NH4+) in PM2.5, which are important chemical species in PM2.5 (about 30-40% in PM2.5) and cannot be further apportioned by receptor models, the regional source contributions to the total concentrations of SO42-, NO3-, and NH4+ are 40.9%, 62.0%, and 59.1% in Shijiazhuang, Xingtai, and Handan, respectively. The local industrial, domestic and agricultural contributions to those are 23.7%, 6.6%, and 29.8% in total in Shijiazhuang, 17.5%, 5.0%, and 17.7% in Xingtai, and 20.6%, 4.8%, and 17.8% in Handan, respectively. The regional joint controls of air pollution are more important in Xingtai and Handan than in Shijiazhuang, and the emission controls of agricultural sources need to be further considered in the future policy. (C) 2015 Elsevier Ltd. All rights reserved.