Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD031140 |
Characteristics of Heavy Particulate Matter Pollution Events Over Hong Kong and Their Relationships With Vertical Wind Profiles Using High-Time-Resolution Doppler Lidar Measurements | |
Yang, Yuanjian1,2; Yim, Steve H. L.1,3,4; Haywood, Jim5,6; Osborne, Martin5,6; Chan, Jazz C. S.3; Zeng, Zhaoliang3; Cheng, Jack C. H.3 | |
2019-08-27 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
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ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2019 |
卷号 | 124期号:16页码:9609-9623 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; England |
英文摘要 | Previous studies have reported boundary layer features related to air pollution. However, few studies have comprehensively evaluated the characteristics and mechanisms of vertical wind in the formation and evolution of heavy particulate matter pollution episodes (EP) in Hong Kong. In this study, we analyzed the vertical characteristics of heavy particulate matter (PM) pollutions over Hong Kong and their relationships with vertical wind profiles using high-time-resolution Doppler lidar measurements and hourly meteorological and air quality observations. We identified nine EPs and show that the events were closely coupled to various vertical wind profiles in the planetary boundary layer (PBL). Our analysis suggests that strong vertical wind speed with wind shear at certain heights in the PBL had a positive correlation with surface PM during most superregional transboundary EPs. The maximum transport height extends from the surface to about 2.0 km or even higher; these transport heights differed among superregional and regional transboundary EPs. At peak surface pollution concentrations during the nine EPs, the surface PM10 had a significant negative correlation with PBL heights/mixing layer heights, while the averaged wind shear in the PBL was significantly positively correlated. These EPs with different mixing layer heights were mainly driven by different vertical wind shear conditions under various weather systems related to surface high pressure, cold fronts, dust storms, and typhoons. This work provides scientific evidence that surface PM pollutions were closely related to the characteristics of vertical profiles during the transboundary air pollutions. |
英文关键词 | PM pollution transport Doppler lidar vertical wind profile mixing layer height |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000490762800039 |
WOS关键词 | YANGTZE-RIVER DELTA ; AEROSOL OPTICAL DEPTH ; GROUND-BASED LIDAR ; AIR-QUALITY ; ENTRAINMENT ZONE ; HEALTH IMPACTS ; LAYER HEIGHT ; TRANSPORT ; CHINA ; DUST |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/186175 |
专题 | 气候变化 |
作者单位 | 1.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Hong Kong, Peoples R China; 2.Nanjing Univ Informat Sci & Technol, Sch Atmospher Phys, Nanjing, Jiangsu, Peoples R China; 3.Chinese Univ Hong Kong, Dept Geog & Resource Management, Hong Kong, Peoples R China; 4.Chinese Univ Hong Kong, Stanley Ho Big Data Decis Analyt Res Ctr, Hong Kong, Peoples R China; 5.Univ Exeter, Dept Math, Coll Engn Math & Phys Sci, Exeter, Devon, England; 6.Met Off, Exeter, Devon, England |
推荐引用方式 GB/T 7714 | Yang, Yuanjian,Yim, Steve H. L.,Haywood, Jim,et al. Characteristics of Heavy Particulate Matter Pollution Events Over Hong Kong and Their Relationships With Vertical Wind Profiles Using High-Time-Resolution Doppler Lidar Measurements[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2019,124(16):9609-9623. |
APA | Yang, Yuanjian.,Yim, Steve H. L..,Haywood, Jim.,Osborne, Martin.,Chan, Jazz C. S..,...&Cheng, Jack C. H..(2019).Characteristics of Heavy Particulate Matter Pollution Events Over Hong Kong and Their Relationships With Vertical Wind Profiles Using High-Time-Resolution Doppler Lidar Measurements.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,124(16),9609-9623. |
MLA | Yang, Yuanjian,et al."Characteristics of Heavy Particulate Matter Pollution Events Over Hong Kong and Their Relationships With Vertical Wind Profiles Using High-Time-Resolution Doppler Lidar Measurements".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 124.16(2019):9609-9623. |
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