DOI: 10.1016/j.atmosenv.2020.117583
论文题名: Tibetan Plateau driven impact of Taklimakan dust on northern rainfall
作者: Liu Y. ; Zhu Q. ; Hua S. ; Alam K. ; Dai T. ; Cheng Y.
刊名: Atmospheric Environment
ISSN: 1352-2310
出版年: 2020
卷: 234 语种: 英语
英文关键词: Aerosols
; Atmospheric movements
; Clouds
; Ice
; Liquids
; Optical properties
; Radiation effects
; Rain
; Aerosol optical depths
; Cloud effective radius
; Cloud optical depth
; Liquid water paths
; Observational data
; Simulation studies
; Spectral radiation
; Taklimakan desert
; Dust
; aerosol
; atmospheric modeling
; atmospheric transport
; convective cloud
; dust
; hydrostatics
; optical depth
; particle size
; precipitation intensity
; rainfall
; China
; Qinghai-Xizang Plateau
; Taklimakan Desert
; Xinjiang Uygur
学科: Clouds
; Dust
; NICAM
; Rainfall
; Taklimakan desert
; Tibetan plateau
中文摘要: In our previous study (Li et al., 2019a), using observational data, we found some evidences of Taklimakan dust effects on the convective clouds over the Tibetan Plateau (TP) and then causing heavy rainfall in the downstream region. Here, a simulation study is performed to quantify the effects of Taklimakan dust on the cloud properties over the TP and downstream rainfall using the Spectral Radiation-Transport Model for Aerosol Species (SPRINTARS) coupled to the Nonhydrostatic Icosahedral Atmospheric Model (NICAM). The results indicate that the dusts in Taklimakan desert can be lifted to the northern slope of the TP. The dust aerosols transported to the TP can diminish the cloud effective radius (CER), but they can increase the cloud optical depth (COD), liquid water path (LWP) and ice water path (IWP) over the TP. The maximum impact of the dusts on the CER lags behind the peak of aerosol optical depth (AOD). Meanwhile, the dusts show a more profound impact on the ice-cloud optical depth (ICOD) than liquid-cloud optical depth (LCOD), which implies a more significant impact on the ice particles than liquid drops in convective clouds over the TP. Overall, due to the indirect effects of Taklimakan dust aerosols, the clouds are developed further over the TP. The eastward movement of the clouds polluted by Taklimakan dust can delay the occurrence of heavy rainfall for 12 h but intensify the rainfall over the northern area. This modeling study verified and quantified the indirect effect of Taklimakan dusts on the cloud properties over the TP and further impacts on the rainfall over the northern area. © 2020 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/160713
Appears in Collections: 气候变化与战略
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作者单位: Collaborative Innovation Center for Western Ecological Safety, Lanzhou University, Lanzhou, 730000, China; College of Atmospheric Sciences, Lanzhou University, Lanzhou, 730000, China; Department of Physics, University of Peshawar, Peshawar, KPK 25120, Pakistan; LASG, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China
Recommended Citation:
Liu Y.,Zhu Q.,Hua S.,et al. Tibetan Plateau driven impact of Taklimakan dust on northern rainfall[J]. Atmospheric Environment,2020-01-01,234