Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.10.021 |
Contribution of local emissions and transboundary air pollution to air quality in Hong Kong during El Nino-Southern Oscillation and heatwaves | |
Yim, S. H. L.1,2,3; Hou, X.2; Guo, J.4; Yang, Y.2 | |
2019-04-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
![]() |
ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 218页码:50-58 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Transboundary air pollution (TAP), which is strongly affected by weather and climate, is a primary contributor to air pollution. Both El Niho-Southern Oscillation (ENSO) events and heatwaves exert influences on TAP, thereby affecting air quality, which has yet to be well understood. This study applied an integrated statistical scheme to examine the contributions of local emission sources and TAP to particulate matter (PM), sulfur dioxide, and nitrogen dioxide during four ENSO events and 20 heatwaves from 2002 to 2016. Hong Kong was studied as an example because of its substantial TAP that can provide useful reference for cities with TAP. We found a remarkable and consistent reduction in the TAP contribution to pollutants during two El Nino events because of the associated rainfall increase, decreased frequency of northerly winds below 700 hPa, and overall stronger wind speed. Moreover, the TAP was the predominant contributor to the increase in the ambient PM concentration during the two La Nina events because of the associated decrease in rainfall, higher frequency of northerly winds below 900 hPa, and weaker wind speed, which were favorable to long-range transport and pollutant accumulation. The ten heatwaves associated with tropical cyclones within a distance of 1100 km from Hong Kong were accompanied by an increase in pollutant concentration, which was featured by the lower wind speed and less rainfall. Our findings highlight the long-term seasonal variability of TAP, and increases in TAP during the El Nino events and heatwaves. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000457814600005 |
WOS关键词 | PEARL RIVER DELTA ; TIANJIN-HEBEI REGION ; EAST-ASIAN SUMMER ; HEAT WAVES ; ATMOSPHERIC CIRCULATIONS ; HAZE POLLUTION ; IMPACT ; MORTALITY ; AEROSOL ; TRANSPORT |
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/38407 |
专题 | 地球科学 |
作者单位 | 1.Chinese Univ Hong Kong, Dept Geog & Resource Management, Shatin, Hong Kong, Peoples R China; 2.Chinese Univ Hong Kong, Inst Environm Energy & Sustainabil, Shatin, Hong Kong, Peoples R China; 3.Chinese Univ Hong Kong, Stanley Ho Big Data Decis Analyt Res Ctr, Shatin, Hong Kong, Peoples R China; 4.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China |
推荐引用方式 GB/T 7714 | Yim, S. H. L.,Hou, X.,Guo, J.,et al. Contribution of local emissions and transboundary air pollution to air quality in Hong Kong during El Nino-Southern Oscillation and heatwaves[J]. ATMOSPHERIC RESEARCH,2019,218:50-58. |
APA | Yim, S. H. L.,Hou, X.,Guo, J.,&Yang, Y..(2019).Contribution of local emissions and transboundary air pollution to air quality in Hong Kong during El Nino-Southern Oscillation and heatwaves.ATMOSPHERIC RESEARCH,218,50-58. |
MLA | Yim, S. H. L.,et al."Contribution of local emissions and transboundary air pollution to air quality in Hong Kong during El Nino-Southern Oscillation and heatwaves".ATMOSPHERIC RESEARCH 218(2019):50-58. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论