DOI: 10.1007/s00382-017-3617-x
Scopus记录号: 2-s2.0-85015188037
论文题名: On the dust load and rainfall relationship in South Asia: an analysis from CMIP5
作者: Singh C. ; Ganguly D. ; Dash S.K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2018
卷: 50, 期: 2018-01-02 起始页码: 403
结束页码: 422
语种: 英语
英文关键词: Aerosol life cycle
; Annual cycle
; CMIP5
; Lead–lag
; Load of dust
Scopus关键词: aerosol
; annual cycle
; climate modeling
; CMIP
; dust
; monsoon
; rainfall
; regional climate
; summer
; South Asia
英文摘要: This study is aimed at examining the consistency of the relationship between load of dust and rainfall simulated by different climate models and its implication for the Indian summer monsoon system. Monthly mean outputs of 12 climate models, obtained from the archive of the Coupled Model Intercomparison Project phase 5 (CMIP5) for the period 1951–2004, are analyzed to investigate the relationship between dust and rainfall. Comparative analysis of the model simulated precipitation with the India Meteorological Department (IMD) gridded rainfall, CRU TS3.21 and GPCP version 2.2 data sets show significant differences between the spatial patterns of JJAS rainfall as well as annual cycle of rainfall simulated by various models and observations. Similarly, significant inter-model differences are also noted in the simulation of load of dust, nevertheless it is further noted that most of the CMIP5 models are able to capture the major dust sources across the study region. Although the scatter plot analysis and the lead–lag pattern correlation between the dust load and the rainfall show strong relationship between the dust load over distant sources and the rainfall in the South Asian region in individual models, the temporal scale of this association indicates large differences amongst the models. Our results caution that it would be pre-mature to draw any robust conclusions on the time scale of the relationship between dust and the rainfall in the South Asian region based on either CMIP5 results or limited number of previous studies. Hence, we would like to emphasize upon the fact that any conclusions drawn on the relationship between the dust load and the South Asian rainfall using model simulation is highly dependent on the degree of complexity incorporated in those models such as the representation of aerosol life cycle, their interaction with clouds, precipitation and other components of the climate system. © 2017, Springer-Verlag Berlin Heidelberg. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109523
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: Marine and Atmospheric Sciences Department, Indian Institute of Remote Sensing, ISRO, Dehradun, India; Centre for Atmospheric Sciences, Indian Institute of Technology Delhi, Delhi, India
Recommended Citation:
Singh C.,Ganguly D.,Dash S.K.. On the dust load and rainfall relationship in South Asia: an analysis from CMIP5[J]. Climate Dynamics,2018-01-01,50(2018-01-02)