GSTDTAP  > 地球科学
DOI10.1016/j.atmosres.2018.09.014
Atmosphere boundary layer height and its effect on air pollutants in Beijing during winter heavy pollution
Xiang, Yan1,2; Zhang, Tianshu1,2; Liu, Jianguo2; Lv, Lihui1,2; Dong, Yunsheng2; Chen, Zhenyi2
2019
发表期刊ATMOSPHERIC RESEARCH
ISSN0169-8095
EISSN1873-2895
出版年2019
卷号215页码:305-316
文章类型Article
语种英语
国家Peoples R China
英文摘要

Beijing is suffering from serious particulate matter pollution, and the atmosphere boundary layer (ABL) has important direct and indirect effects on human activities. This research analyzed the characteristics of the ABL in Beijing and discussed the impacts of meteorological factors on atmosphere boundary layer height (ABLH) during winter heavy pollution events in Beijing. The data observed by Mie lidar in the winter of 2014 to 2016 were used to estimate the ABLH by employing image edge detection. In addition, a weather research and forecasting (WRF) model was used to simulate the meteorological field in the same period. Ground and vertical data indicated that the average ABLH decreased from 0.63 km to 0.53 km in three consecutive years. In addition, a significant negative correlation existed between ABLE and PM2.5, and the effect of low ABLH on the vertical diffusion capacity of pollutants was greater than that of high ABLH. Relative humidity was negatively correlated with ABLE, increasing during the three years at a rate of 61%. In the winter of 2014, the atmosphere was dominated by instability, which was beneficial to the development of ABL. In contrast, many stable stratifications occurred in the upper air during the winters of 2015 and 2016; however, these were not conducive to the development of ABL. The northwest wind decreased by 11.35% and the south wind increased by 11.41%. Moreover, the time of near-surface wind speed below 2 m s(-1) increased by 34.74%, and the frequency of occurrence above 4 m s(-1) decreased by 8.19%. The decrease in ground wind speed was unfavorable for the development of ABL. The sea level pressure remained at 1027.68 +/- 17.32 hPa, and the ABLH was found to be generally positively correlated with sea level pressure.


英文关键词Atmosphere boundary layer height Lidar PM2.5 Meteorological factors WRF model
领域地球科学
收录类别SCI-E
WOS记录号WOS:000447575100023
WOS关键词NORTH CHINA ; HYGROSCOPIC GROWTH ; SIZE DISTRIBUTION ; RIVER DELTA ; AEROSOL ; LIDAR ; WRF ; QUALITY ; IMPACT ; MODEL
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/38588
专题地球科学
作者单位1.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Anhui, Peoples R China;
2.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China
推荐引用方式
GB/T 7714
Xiang, Yan,Zhang, Tianshu,Liu, Jianguo,et al. Atmosphere boundary layer height and its effect on air pollutants in Beijing during winter heavy pollution[J]. ATMOSPHERIC RESEARCH,2019,215:305-316.
APA Xiang, Yan,Zhang, Tianshu,Liu, Jianguo,Lv, Lihui,Dong, Yunsheng,&Chen, Zhenyi.(2019).Atmosphere boundary layer height and its effect on air pollutants in Beijing during winter heavy pollution.ATMOSPHERIC RESEARCH,215,305-316.
MLA Xiang, Yan,et al."Atmosphere boundary layer height and its effect on air pollutants in Beijing during winter heavy pollution".ATMOSPHERIC RESEARCH 215(2019):305-316.
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