DOI: 10.1016/j.atmosres.2018.08.013
Scopus记录号: 2-s2.0-85052891440
论文题名: Variability of winter haze over the Beijing-Tianjin-Hebei region tied to wind speed in the lower troposphere and particulate sources
作者: Shi P. ; Zhang G. ; Kong F. ; Chen D. ; Azorin-Molina C. ; Guijarro J.A.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2019
卷: 215 起始页码: 1
结束页码: 11
语种: 英语
英文关键词: Beijing-Tianjin-Hebei
; Dust storm frequency
; Fossil fuel emissions
; Lower troposphere
; Visibility
; Wind speed changes
; Winter haze days
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
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. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109070
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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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
Recommended Citation:
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]. Atmospheric Research,2019-01-01,215