| 基于CMAQ源同化反演方法的京津冀局地污染源动态变化特征模拟研究 |
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| 引用本文： | 孟凯,程兴宏,徐祥德,曲晓黎,马翠平,赵玉广,李洋,杨雨灵,张文宗,丁国安.基于CMAQ源同化反演方法的京津冀局地污染源动态变化特征模拟研究[J].环境科学学报,2017,37(1):52-60. |
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| 作者姓名： | 孟凯 程兴宏 徐祥德 曲晓黎 马翠平 赵玉广 李洋 杨雨灵 张文宗 丁国安 |
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| 作者单位： | 河北省环境气象中心, 石家庄 050021,2. 中国气象科学研究院灾害天气国家重点实验室, 北京 100081;3. 中国气象局大气化学重点开放实验室, 北京 100081,中国气象科学研究院灾害天气国家重点实验室, 北京 100081,河北省气象服务中心, 石家庄 050021,河北省环境气象中心, 石家庄 050021,河北省环境气象中心, 石家庄 050021,河北省环境气象中心, 石家庄 050021,河北省环境气象中心, 石家庄 050021,河北省气象科学研究所, 石家庄 050021,中国气象局大气化学重点开放实验室, 北京 100081 |
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| 基金项目： | 环保公益性行业科研专项（No.201409027）;国家重点研发计划课题（No.2016YFC0203302）;河北省科技计划项目（No.15274204D）;河北省气象局科研项目（No.15ky21） |
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| 摘 要： | 利用"Nudging"源同化技术反演了京津冀地区2014年1、3、7、11月SO_2、NO_x的局地动态污染源,并分析其排放源强、特征及地理分布,对比其与初始源的差异,同时检验了反演源的模拟效果.结果表明,SO_2、NO_x污染源存在明显的季节变化,冬季或采暖期排放强度最大.由唐山、北京、天津、廊坊、保定、石家庄、邢台、邯郸构成东北-西南走向的带状污染物高排放区,最高排放中心主要集中在太行山、燕山山前区域,且排放具有典型的"城市化"特征,即各个城市市区及附近强度最大,周边郊县稍弱.与初始源模拟结果相比,采用反演源更能反映出污染物的时空变化特征,模拟值与实测值较接近,而且对于重污染过程亦具有较好的模拟效果.
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| 关 键 词： | 京津冀地区 空气污染 源同化反演 SO2、NOx模拟 CMAQ模式 |
| 收稿时间： | 2016/3/20 0:00:00 |
| 修稿时间： | 6/1/2016 12:00:00 AM |
Spatial-temporal variations of pollutant emission sources inversed by adaptive nudging scheme over Beijing-Tianjin-Hebei region based on the CMAQ model |
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| MENG Kai,CHENG Xinghong,XU Xiangde,QU Xiaoli,MA Cuiping,ZHAO Yuguang,LI Yang,YANG Yuling,ZHANG Wenzong and DING Guoan.Spatial-temporal variations of pollutant emission sources inversed by adaptive nudging scheme over Beijing-Tianjin-Hebei region based on the CMAQ model[J].Acta Scientiae Circumstantiae,2017,37(1):52-60. |
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| Authors: | MENG Kai CHENG Xinghong XU Xiangde QU Xiaoli MA Cuiping ZHAO Yuguang LI Yang YANG Yuling ZHANG Wenzong and DING Guoan |
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| Institution: | Hebei Provincial Environmental Meteorological Center, Shijiazhuang 050021,2. State Key Lab of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081;3. Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081,State Key Lab of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081,Hebei Provincial Meteorological Service Center, Shijiazhuang 050021,Hebei Provincial Environmental Meteorological Center, Shijiazhuang 050021,Hebei Provincial Environmental Meteorological Center, Shijiazhuang 050021,Hebei Provincial Environmental Meteorological Center, Shijiazhuang 050021,Hebei Provincial Environmental Meteorological Center, Shijiazhuang 050021,Hebei Institute of Meteorological Sciences, Shijiazhuang 050021 and Key Laboratory for Atmospheric Chemistry, Chinese Academy of Meteorological Sciences, Beijing 100081 |
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| Abstract: | The pollutant source assimilation of nudging inversion method was applied to simulate the local sources of SO2 and NOx in Beijing-Tianjin-Hebei region during January, March, July and November 2014. The strengths, patterns, and geographical distribution of SO2 and NOx sources were compared with the original sources and the performance of inversed-source-based modeling was evaluated. The results showed that the sources of SO2 and NOx present obvious seasonal variations and is the strongest in winter or heating period. A high pollutant emission zone in the direction of northeast-southwest was discovered along Tangshan, Beijing, Tianjin, Langfang, Baoding, Shijiazhuang, Xingtai and Handan in the front of the Taihang and Yan mountains. The pollutant emissions exhibit a typical "urbanization" effect, i.e. SO2 and NOx sources are high in the urban area and its surroundings and weak in the rural area. Compared with the initial-emission-based modeling, the inversed-emission-based simulation could better capture the spatial-temporal variations of air pollutants, especially during high pollution periods. |
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| Keywords: | Beijing-Tianjin-Hebei area air pollution source assimilation inversion SO2 and NOx simulation CMAQ model |
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