气候变化领域集成服务门户(CCPortal): Variability of winter haze over the Beijing-Tianjin-Hebei region tied to wind speed in the lower troposphere and particulate sources

CCPortal

DOI	10.1016/j.atmosres.2018.08.013
	Variability of winter haze over the Beijing-Tianjin-Hebei region tied to wind speed in the lower troposphere and particulate sources
	Shi P.; Zhang G.; Kong F.; Chen D.; Azorin-Molina C.; Guijarro J.A.
发表日期	2019
ISSN	0169-8095
起始页码	1
结束页码	11
卷号	215
英文摘要	This study analyzes the variability of winter haze days and visibility in the Beijing-Tianjin-Hebei (BTH) region, in relation to the regional average wind speed changes in the lower troposphere and emissions for 1961–2014. Winter mean surface meteorological data, NCEP/NCAR atmospheric reanalysis data, and fossil fuel emission data are used. The results reveal a significant increase in the haze days of +0.8 days decade−1 (p <.01), and a subsequent decline in visibility of −1.56 km decade−1 (p <.01). Most interestingly, an accelerated increase in the number of haze days was observed for the last 11-year period (+8.3 days decade−1, p <.01) of the study period (2004–2014). Regression analysis indicates that the increase of haze occurrence and decrease in visibility are partly due to the significant (p <.01) declining trend of the mean wind speed in the lower troposphere (−0.19 m s−1 decade−1 at 10 m, (−0.23 m s−1 decade−1 at 925 hPa), and − 0.21 m s−1 decade−1 at 850 hPa), and partly due to the declining (dust storm frequency as a proxy, −0.41 days dec−1) surrounding particulate sources and increasing fossil fuel emissions (total carbon emission as a proxy, +48,206.8 thousand metric tons dec−1). Specifically, wind speed changes in the lower troposphere explain 41.3% of the interannual varation of the winter haze days and 71.2% of the visibility variance. These are extended to 51.7% and 81.6% respectively when combined with information about the natural (dust storm frequency) and anthropogenic (fossil fuel emissions) particulate sources. Therefore, the analyses show that wind speed changes in the lower troposphere, together with the varied natural and anthropogenic sources of particulates, play a key role in modulating winter haze and visibility conditions in the BTH area. © 2018 Elsevier B.V.
英文关键词	Beijing-Tianjin-Hebei; Dust storm frequency; Fossil fuel emissions; Lower troposphere; Visibility; Wind speed changes; Winter haze days
语种	英语
scopus关键词	Dust; Fossil fuels; Particulate emissions; Regression analysis; Speed; Storms; Troposphere; Visibility; Dust storm; Fossil fuel emissions; Lower troposphere; Tianjin; Wind speed; Winter haze days; Wind; anthropogenic source; carbon emission; dust storm; fossil fuel; haze; particulate matter; troposphere; visibility; wind velocity; winter; Beijing [China]; China; Hebei; Tianjin
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/162222
作者单位	State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing, 100875, China; Key Laboratory of Environmental Change and Natural Disaster of Ministry of Education, Beijing Normal University, Beijing, 100875, China; Academy of Disaster Reduction and Emergency Management, Ministry of Civil Affairs & Ministry of Education, Beijing Normal University, Beijing, 100875, China; Regional Climate Group, Department of Earth Sciences, University of Gothenburg, Gothenburg, 40530, Sweden; State Meteorological Agency, Delegation of the Balearic Islands, Palma de Mallorca, Spain
推荐引用方式 GB/T 7714	Shi P.,Zhang G.,Kong F.,et al. Variability of winter haze over the Beijing-Tianjin-Hebei region tied to wind speed in the lower troposphere and particulate sources[J],2019,215.
APA	Shi P.,Zhang G.,Kong F.,Chen D.,Azorin-Molina C.,&Guijarro J.A..(2019).Variability of winter haze over the Beijing-Tianjin-Hebei region tied to wind speed in the lower troposphere and particulate sources.Atmospheric Research,215.
MLA	Shi P.,et al."Variability of winter haze over the Beijing-Tianjin-Hebei region tied to wind speed in the lower troposphere and particulate sources".Atmospheric Research 215(2019).