DOI: 10.1002/joc.5700
论文题名: Shift of daily rainfall peaks over the Beijing–Tianjin–Hebei region: An indication of pollutant effects?
作者: Zhou S. ; Yang J. ; Wang W.-C. ; Gong D. ; Shi P. ; Gao M.
刊名: International Journal of Climatology
ISSN: 8998418
出版年: 2018
卷: 38, 期: 13 起始页码: 5010
结束页码: 5019
语种: 英语
英文关键词: aerosol
; diurnal variation
; radiative heating
; rainfall
Scopus关键词: Aerosols
; Pollution
; Beijing-tianjin-hebei regions
; Diurnal variation
; Environmental data
; Lower troposphere
; Meteorological condition
; Model sensitivity
; Radiative heating
; Rainfall measurements
; Rain
; aerosol
; atmospheric dynamics
; atmospheric pollution
; cloud microphysics
; diurnal variation
; pollution effect
; precipitation intensity
; rainfall
; troposphere
; China
; Jingjinji
英文摘要: Aerosol impacts on diurnal variations of rainfall over the Beijing–Tianjin–Hebei region are investigated by comparing the observations between polluted and clean days in early summer (June 1 to July 20) before the rainy season begins. The 2002–2012 hourly rainfall measurements in conjunction with environmental data reveal that during high-pollution days the peak of heavy rainfall shifted ~4 hr earlier while the peak of light rainfall delayed by 2–3 hr. Detailed analyses of meteorological conditions associated with the shifts suggest that the former is mainly caused by enhanced lower-level aerosol heating during the daytime which increases the lower-troposphere instability and facilitates the convective rainfall occurrence, and the latter is related to decreases of conversion of cloud droplets into raindrops associated with aerosol increases. Nevertheless, conducting model sensitivity simulations to better understand aerosol–cloud microphysics–precipitation interactions is warranted. © 2018 Royal Meteorological Society Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/116768
Appears in Collections: 气候减缓与适应
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作者单位: State Key Laboratory of Earth Surface Process and Resource Ecology/Academy of Disaster Reduction and Emergency Management, Faculty of Geographical Science, Beijing Normal University, Beijing, China; Atmospheric Sciences Research Center, State University of New York, Albany, NY, United States; School of Systems Science, Beijing Normal University, Beijing, China
Recommended Citation:
Zhou S.,Yang J.,Wang W.-C.,et al. Shift of daily rainfall peaks over the Beijing–Tianjin–Hebei region: An indication of pollutant effects?[J]. International Journal of Climatology,2018-01-01,38(13)