Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-1705-2018 |
Characterization of atmospheric trace gases and particulate matter in Hangzhou, China | |
Zhang, Gen1,2; Xu, Honghui3; Qi, Bing4; Du, Rongguang4; Gui, Ke1,2; Wang, Hongli5; Jiang, Wanting6; Liang, Linlin1,2; Xu, Wanyun1,2 | |
2018-02-06 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:3页码:1705-1728 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The Yangtze River Delta (YRD) is one of the most densely populated regions in China with severe air quality issues that have not been fully understood. Thus, in this study, based on 1-year (2013) continuous measurement at a National Reference Climatological Station (NRCS, 30.22 degrees N, 120.17 degrees E; 41.7m a.s.l.) in the center of Hangzhou in the YRD, we investigated the seasonal characteristics, interspecies relationships, and the local emissions and the regional potential source contributions of trace gases (including O-3, NOx, NOy, SO2, and CO) and particulate matter (PM2.5 and PM10). Results revealed that severe two-tier air pollution (photochemical and haze pollution) occurred in this region, with frequent exceedances in O-3 (38 days) and PM2.5 (62 days). O-3 and PM2.5 both exhibited distinct seasonal variations with reversed patterns: O3 reaching a maximum in warm seasons (May and July) but PM2.5 reaching a maximum in cold seasons (November to January). The overall results from interspecies correlation indicated a strong local photochemistry favoring the O-3 production under a volatile organic compound (VOC)-limited regime, whereas it moved towards an optimum O-3 production zone during warm seasons, accompanied by the formation of secondary fine particulates under high O-3. The emission maps of PM2.5, CO, NOx, and SO2 demonstrated that local emissions were significant for these species on a seasonal scale. The contributions from the regional transport among inland cities (Zhejiang, Jiangsu, Anhui, and Jiangxi Province) on a seasonal scale were further confirmed to be crucial to air pollution at the NRCS site by using backward trajectory simulations. Air masses transported from the offshore areas of the Yellow Sea, East Sea, and South Sea were also found to be highly relevant to the elevated O-3 at the NRCS site through the analysis of potential source contribution function (PSCF). Case studies of photochemical pollution (O-3) and haze (PM2.5) episodes both suggested the combined importance of local atmospheric photochemistry and synoptic conditions during the accumulation (related with anticyclones) and dilution process (related with cyclones). Apart from supplementing a general picture of the air pollution state in the city of Hangzhou in the YRD region, this study specifically elucidates the role of local emission and regional transport, and it interprets the physical and photochemical processes during haze and photochemical pollution episodes. Moreover, this work suggests that cross-regional control measures are crucial to improve air quality in the YRD region, and it further emphasizes the importance of local thermally induced circulation for air quality. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000424258700005 |
WOS关键词 | YANGTZE-RIVER DELTA ; OZONE PRODUCTION EFFICIENCY ; VOLATILE ORGANIC-COMPOUNDS ; BOUNDARY-LAYER STRUCTURE ; SOURCE APPORTIONMENT ; AIR-POLLUTION ; AEROSOL FORMATION ; SULFUR-DIOXIDE ; CHEMICAL-CHARACTERIZATION ; TROPOSPHERIC OZONE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; 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/30916 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Meteorol Sci, State Key Lab Severe Weather, Beijing 100081, Peoples R China; 2.Chinese Acad Meteorol Sci, Key Lab Atmospher Chem, CMA, Beijing 100081, Peoples R China; 3.Zhejiang Inst Meteorol Sci, Hangzhou 310008, Zhejiang, Peoples R China; 4.Hangzhou Meteorol Bur, Hangzhou 310051, Zhejiang, Peoples R China; 5.Shanghai Acad Environm Sci, State Environm Protect Key Lab Format & Prevent U, Shanghai 200233, Peoples R China; 6.Chengdu Univ Informat Technol, Coll Atmospher Sci, Plateau Atmospher & Environm Lab Sichuan Prov, Chengdu 610225, Sichuan, Peoples R China |
推荐引用方式 GB/T 7714 | Zhang, Gen,Xu, Honghui,Qi, Bing,et al. Characterization of atmospheric trace gases and particulate matter in Hangzhou, China[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(3):1705-1728. |
APA | Zhang, Gen.,Xu, Honghui.,Qi, Bing.,Du, Rongguang.,Gui, Ke.,...&Xu, Wanyun.(2018).Characterization of atmospheric trace gases and particulate matter in Hangzhou, China.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(3),1705-1728. |
MLA | Zhang, Gen,et al."Characterization of atmospheric trace gases and particulate matter in Hangzhou, China".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.3(2018):1705-1728. |
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