Comparison of four different types of planetary boundary layer heights during a haze episode in Beijing
文献类型：期刊论文
| 作者 | Shi, Yu4; Hu, Fei1,4; Xiao, Zhisheng2; Fan, Guangqiang3; Zhang, Zhe1,4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2020-04-01 |
| 卷号 | 711 |
| 关键词 | PBL height Lidar Radiosonde WRF Haze |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2019.134928 |
| 通讯作者 | Hu, Fei(hufei@mail.iap.ac.cn) |
| 英文摘要 | The planetary boundary layer (PBL) height mainly determines the environmental capacity for the diffusion of atmospheric pollutants, and has always been a hot issue in the study of air pollution. However, there still remains great uncertainty, partly because different PBL heights definitions and the PBL heights are obtained by various measurement instruments. Pollutants are the substances emitted, different from the atmospheric background physical properties such as wind, temperature and turbulence flux that always exist even without pollution. It is very important to distinguish PBL heights obtained from wind, temperature, turbulence quantities and the concentration of pollutants. In this paper, we express the PBL heights determined on the above four parameters as Hu, H-theta, Ht and Hc respectively, and compare them during a heave haze pollution process in Beijing using observation data and simulation results. The comparison results show that: (1) H-theta, namely the inversion layer height, decreased from approximately 1250 m to 450 m from 26 to 30 December, resulting in deteriorating pollution situation. Hc, calculated by lidar and characterizes the maximum depth of vertical diffusion of particulates, also dropped below 500 m, and on the whole, the values of Hc estimated by gradient method and H-theta were in good agreement; (2) Generally, Hc was relatively lower than H-theta and Hu, despite a high bias caused by the existence of the residual layer, multilayer aerosol structure, or lower inversion; (3) Ht estimated from turbulence quantities simulated by WRF model mainly approximated Hu, H-theta and Hc in the daytime during haze pollution, however for the nocturnal boundary layer height in the winter, Ht was seriously underestimated. The averaged PBL heights according to the pollution level showed that Hc, H-theta, Hu and Ht differed greatly on clean days, and the maximum PBL height Hu exceeded 1400 m. On clean days, the inversion intensities observed were lower, so the blocking effect of the inversion layer to pollutant diffusion was not strong enough, H-theta (886 m) deviated from Hc (1111 m). However, Hc and Ht were very close, approximately 1100 m. The decrease of PBL height led to heavy pollution, Hc, H-theta and Ht were almost 700 m. Hu was slightly higher and reduced by about 450 m during heavy pollution. The detailed analyses and comparisons of the PBL height from different variables can help improve the rational application of different methods in the determination of PBL height. (C) 2019 The Author(s). Published by Elsevier B.V. |
| WOS关键词 | AIR-POLLUTION ; MIXING HEIGHT ; LIDAR ; SENSITIVITY ; RADIOSONDE ; IMPACT ; WRF ; TOP ; STRATIFICATION ; METEOROLOGY |
| 资助项目 | National Key Research and Development Program of China[2017YFC0209605] ; National Natural Science Foundation of China[41975018] |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:000509344700040 |
| 出版者 | ELSEVIER |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.hfcas.ac.cn:8080/handle/334002/103867]  |
| 专题 | 中国科学院合肥物质科学研究院 |
| 通讯作者 | Hu, Fei |
| 作者单位 | 1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Meteorol Sci, Beijing 100081, Peoples R China 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Peoples R China 4.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atm, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Yu,Hu, Fei,Xiao, Zhisheng,et al. Comparison of four different types of planetary boundary layer heights during a haze episode in Beijing[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2020,711. |
| APA | Shi, Yu,Hu, Fei,Xiao, Zhisheng,Fan, Guangqiang,&Zhang, Zhe.(2020).Comparison of four different types of planetary boundary layer heights during a haze episode in Beijing.SCIENCE OF THE TOTAL ENVIRONMENT,711. |
| MLA | Shi, Yu,et al."Comparison of four different types of planetary boundary layer heights during a haze episode in Beijing".SCIENCE OF THE TOTAL ENVIRONMENT 711(2020). |
入库方式： OAI收割
来源：合肥物质科学研究院
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