延庆地区山谷风对PM<sub>2.5</sub>浓度的影响

Abstract
Figure/Table
References
Related Citation (15)

Download: PDF (1788 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Based on the environmental monitoring data and meteorological data of Beijing from 2015 to 2019, this study analyzed the impact of mountain-valley wind on PM_2.5 concentrations in Yanqing and revealed the separateness, the similarities and the differences between (the event 1) initial stage of air pollution event with mountain-valley wind and (the event 2) non-mountain-valley wind and its meteorological mechanism. The result showed that persistent pollution concentrated in September to March of the next year with a total of 63 times, of which 27 times (43%) were accompanied by one or more mountain-valley days and 82% mountain-valley days appeared in the initial stage of the pollution event and 18% appeared in the peak stage. The hourly PM_2.5 concentrations in mountain-valley days (the event 1) were higher than those in non-mountain-valley days (the event 2) by 4.5~15.4μg/m³. The maximum diurnal difference was in the stage of valley wind, which was greater than 13μg/m³ from 15:00 to 19:00. The wind frequency center of SSE-ESE was 0.59% with the wind speed about 3.3m/s from 15:00 to 16:00. The wind frequency centers of non-mountain-valley wind days were WSW-SW and SE-ESE with the maximum value of 0.41% and the wind speed was smaller than that of mountain-valley days. In the initial stage of both events 1 and 2, the critical period of PM_2.5 concentration change was from 15:00 to 19:00. The wind direction of event 1 was E-SSE and the wind speed was 2~4m/s. In the event 1, the growth rate of PM_2.5 was greater than that of event 2, which was basically consistent with the trend of dew point temperature change. The PM_2.5 concentration of event 1was significantly higher than that of event 2. The meteorological mechanism can be so summarized: the mountain-valley wind circulation appears in the initial stage of the pollution event, then in the later stage, the southeast wind in the valley from the regional transport of aerosol and water vapor, which have a positive contribution to the increase of PM_2.5 concentration. This special type of air pollution events accounted for 20% in the Beijing plain (outside of Yanqing aera and the wind orientation centers were scattered in the daytime with NNW-WNW, SW-SSW and ENE-NNE about 0.7% and S-ESE orientation.

Key words： mountain-valley wind PM_2.5 Yanqing air pollution events wind frequency regional transportation

Received: 27 May 2021

PACS:

X513

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	WU Jin
	LI Chen
	MA Zhi-qiang
	MA Xiao-hui
	SUN Zhao-bin
	HAN Ting-ting
	ZHU Xiao-wan

Cite this article:

WU Jin,LI Chen,MA Zhi-qiang等. Effect of mountain-valley wind on PM_2.5 concentrations in Yanqing Area[J]. CHINA ENVIRONMENTAL SCIENCECE, 2022, 42(1): 61-67.

URL:

http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2022/V42/I1/61

[1]	Carbone C, Decesari S, Paglione M, et al. 3-year chemical composition of free tropospheric PM1 at the Mt. Cimone GAW global station – South Europe – 2165m a. s. l [J]. Atmospheric Environment, 2014, 87: 218-227.
[2]	Diémoz H, Barnaba F, Magri T, et al. Transport of Po Valley aerosol pollution to the northwestern Alps – Part 1: Phenomenology[J]. Atmospheric Chemistry Physics, 2019, 19: 3065-3095.
[3]	Finardi S, Silibello C, D'Allura A, et al. Analysis of pollutants exchange between the Po Valley and the surrounding European region [J]. Urban Climate, 2014, 10: 682-702.
[4]	Larsen B R, Gilardoni S, Stenstrm K, et al. Sources for PM air pollution in the Po Plain, Italy: Ⅱ. Probabilistic uncertainty characterization and sensitivity analysis of secondary and primary sources [J]. Atmospheric Environment, 2012, 50: 203-213.
[5]	国务院. 大气污染防治行动计划[Z]. http://www.gov.cn/zwgk/2013~09/12/content_2486773.htm, 2013-09-12. The State Council. The action plan on prevention and control of air pollution [Z]. http://www.gov.cn/zwgk/2013~09/12/content_2486773.htm, 2013-09-12.
[6]	张强, 耿冠楠. 中国清洁空气行动对PM2.5污染的影响[J]. 中国科学: 地球科学, 2020, 50: 439-440. Zhang Q, Geng G N. Impact of clean air action on PM2.5 pollution in China [J]. Science China Earth Sciences, 2019, 62: 1845-1846.
[7]	肖致美, 徐虹, 蔡子颖, 等. 2020年天津市两次重污染天气污染特征分析[J]. 环境科学, 2020, 41(9): 3879-3888. Xiao Z M, Xu H, Cai Z Y, et al. Characterization of two heavy pollution episodes in Tianjin in 2020 [J]. Environmental Science, 2020, 41(9): 3879-3888.
[8]	周静博, 段菁春, 王建国, 等. 2019年元旦前后石家庄市重污染过程PM2.5污染特征及来源解析[J]. 环境科学, 2020, 41(1): 39-49. Zhou J B, Duan J C, Wang J G, et al. Analysis of pollution characteristics and sources of PM2.5 during heavy pollution in Shijiazhuang city around New Year's Day 2019 [J]. Environmental Science, 2020, 41(1): 39-49.
[9]	吕喆, 魏巍, 周颖, 等. 2015~2016年北京市3次空气重污染红色预警PM2.5成因分析及效果评估[J]. 环境科学, 2019, 40(1): 1-10. Lü Z, Wei W, Zhou Y, et al. Cause and effect evaluation of PM2.5 during three red alerts in Beijing from 2015 to 2016 [J]. Environmental Science, 2019, 40(1): 1-10.
[10]	贾佳, 丛怡, 高清敏, 等. 中原城市冬季两次重污染形成机制及来源[J]. 环境科学, 2020, 41(12): 5256-5266. Jia J, Cong Y, Gao Q M, et al. Formation mechanism and source analysis of two heavy pollution periods in winter in a central plains city [J]. Environmental Science, 2020, 41(12): 5256-5266.
[11]	寿绍文, 励申申, 寿亦萱, 等. 中尺度气象学[M]. 北京: 气象出版社, 2009. Shou S W, Li S S, Shou Y X, et al. Mesoscale atmospheric dynamics [M]. Beijing: Higher Education Press, 2009.
[12]	刘树华, 刘振鑫, 李炬, 等. 京津冀地区大气局地环流耦合效应的数值模拟[J]. 中国科学D辑: 地球科学, 2009, 39(1): 88-98. Liu S H, Liu Z X, Li J, et al. Numerical simulation of coupling effect of local atmospheric circulation in Beijing-Tianjin-Hebei region [J]. Science China Earth Sciences, 2009, 39(1): 88-98.
[13]	康娜, 辛金元, 蔺永耀, 等. 北京山前典型细粒子污染过程的气象条件分析[J]. 环境科学研究, 2009, 22(9): 1013-1020. Kang N, Xin J Y, Lin Y Y, et al. Meteorological condition analysis of a typical fine particle pollution event in the piedmont region of Beijing [J]. Research of Environmental Sciences, 2009, 22(9): 1013-1020.
[14]	王跃, 王莉莉, 赵广娜, 等. 北京冬季PM2.5重污染时段不同尺度环流形势及边界层结构分析[J]. 气候与环境研究, 2014, 19(2): 173-184. Wang Y, Wang L L, Zhao G N, et al. Analysis of different-scales circulation patterns and boundary layer structure of PM2.5 heavy pollutions in Beijing during winter [J]. Climatic and Environmental Research, 2014, 19(2): 173-184.
[15]	董群, 赵普生, 王迎春, 等. 北京山谷风环流特征分析及其对PM2.5浓度的影响[J]. 环境科学, 2017, 38(6): 2218-2230. Dong Q, Zhao P S, Wang Y C, et al. Impact of mountain-valley wind circulation on typical cases of air pollution in Beijing [J]. Environmental Science, 2017, 38(6): 2218-2230.
[16]	李青春, 李炬, 郑祚芳, 等. 冬季山谷风和海陆风对京津冀地区大气污染分布的影响[J]. 环境科学, 2019, 40(2): 513-524. Li Q C, Li J, Zheng Z F, et al. Influence of mountain valley breeze and sea land breeze in winter on distribution of air pollutants in Beijing-Tianjin-Hebei region [J]. Environmental Science, 2019, 40 (2): 513-524.
[17]	游春华, 蔡旭辉, 宋宇, 等. 京津地区夏季大气局地环流背景研究[J]. 北京大学学报(自然科学版), 2006, 42(6): 779-783. You C H, Cai X J, Song J, et al. Local atmospheric circulations over Beijing-Tianjin area in summer [J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2006, 42(6): 779-783.
[18]	苏福庆, 任阵海, 高庆先, 等. 北京及华北平原边界层大气中污染物的汇聚系统—边界层输送汇[J]. 环境科学研究, 2004, 17(1): 21-33. Su F Q, Ren Z H, Gao Q X, et al. Convergence system of air contamination in boundary layer above Beijing and North China: Transportation convergence in boundary layer [J]. Research of Environmental Sciences, 2004, 17(1): 21-33.
[19]	朱翠娟, 叶卓佳, 段宝忠, 等. 秋冬季节京津渤地区局地环流特征及气溶胶分布规律[J]. 环境科学学报, 1982, 2(4): 342-350. Zhu C J, Ye Z J, Duan B Z, et al. Characteristics of local circulation and aerosol distribution over Beijing-Tianjin area during autumn and winter [J]. Acta Scientiae Circumstantiae, 1982, 2(4): 342-350.
[20]	Miao Y, Li J, Miao S, et al. Interaction between planetary boundary layer and PM2.5 pollution in megacities in China: a review [J]. Current Pollution Reports, 2019, 5: 261-271.
[21]	Wilcox E M, Thomas R M, Praveen P S, et al. Black carbon solar absorption suppresses turbulence in the atmospheric boundary layer [J]. Proceedings of the National Academy of Science, 2016, 113: 11794-11799.
[22]	Zhong J T, Zhang X Y, Dong Y S, et al. Feedback effects of boundary-layer meteorological factors on cumulative explosive growth of PM2.5 during winter heavy pollution episodes in Beijing from 2013 to 2016 [J]. Atmospheric Chemistry and Physics, 2018, 18: 247-258.
[23]	张人文, 范绍佳, 李颖敏. 2008年秋季从化山谷风观测研究[J]. 热带气象学报, 2012, 28(1): 134-139. Zhang R W, Fan S J, Li Y M. Observational study of mountain-valley breeze over Conghua in 2008 fall [J]. Journal of tropical meteorology, 2012, 28(1): 134-139.
[24]	郑祚芳, 任国玉, 高华. 北京地区局地环流观测分析[J]. 气象, 2018, 44(3): 425-433. Zheng Z F, Ren G Y, Gao H. Analysis of the local circulation in Beijing area[J]. Meteorological Monthly, 2018, 44(3): 425-433.
[25]	李宗恺, 潘云仙, 孙润桥. 空气污染气象学原理及应用[M]. 北京: 气象出版社, 1985. Li Z K, Pan Y X, Sun R Q. Principles and applications of air pollution meteorology (in Chinese) [M]. Beijing: Higher Education Press, 1985.
[26]	童志权. 大气环境影响评价[M]. 北京: 中国环境科学出版社, 1988. Tong Q Z. Environmental impact assessment on air [M]. Beijing: China Environmental Science Press, 1988.
[27]	孙兆彬, 廖晓农, 王占山, 等. 北京地区空气重污染下雾凇和偏东风对PM2.5清除作用[J]. 环境科学, 2016, 37(10): 3679-3685. Sun Z B, Liao X N, Wang Z S, et al. Scavenging effect of rime and east wind on PM2.5 under air heavy pollution in Beijing [J]. Environmental Science, 2016, 37(10): 3679-3685.
[28]	廖晓农, 孙兆彬, 何娜, 等. 边界层低空急流导致北京PM2.5迅速下降及其形成机制的个例分析[J]. 环境科学, 2016, 37(1): 51-59. Liao X N, Sun Z B, He N, et al. A case study on the rapid cleaned away of PM2.5 pollution in Beijing related with BL jet and its mechanism [J]. Environmental Science, 2016, 37(1): 51-59.
[29]	Wagner J S, Gohm A, Rotach M W. The impact of valley geometry on daytime thermally driven flows and vertical transport processes [J]. Quarterly Journal of the Royal Meteorological Society, 2014, 141: 1780-1794.