DOI: 10.1175/JCLI-D-15-0555.1
Scopus记录号: 2-s2.0-84964879804
论文题名: Transient climate impacts for scenarios of aerosol emissions from Asia: A story of coal versus gas
作者: Grandey B.S. ; Cheng H. ; Wang C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 8 起始页码: 2849
结束页码: 2867
语种: 英语
Scopus关键词: Aerosols
; Atmospheric thermodynamics
; Climate change
; Climatology
; Earth atmosphere
; Economics
; Fighter aircraft
; Fuels
; Gas emissions
; Greenhouse effect
; Greenhouse gases
; Asia
; Climate prediction
; General circulation model
; Geographic location
; Monsoons
; Climate models
; aerosol
; climate effect
; climate modeling
; climate prediction
; coal
; emission
; gas
; general circulation model
; monsoon
; Asia
英文摘要: Fuel usage is an important driver of anthropogenic aerosol emissions. In Asia, it is possible that aerosol emissions may increase if business continues as usual, with economic growth driving an increase in coal burning. But it is also possible that emissions may decrease rapidly as a result of the widespread adoption of cleaner technologies or a shift toward noncoal fuels, such as natural gas. In this study, the transient climate impacts of two aerosol emissions scenarios are investigated: A representative concentration pathway 4.5 (RCP4.5) control, which projects a decrease in anthropogenic aerosol emissions, and a scenario with enhanced anthropogenic aerosol emissions from Asia. A coupled atmosphere-ocean configuration of the Community Earth System Model (CESM), including the Community Atmosphere Model, version 5 (CAM5), is used. Three sets of initial conditions are used to produce a three-member ensemble for each scenario. Enhanced Asian aerosol emissions are found to exert a large cooling effect across the Northern Hemisphere, partially offsetting greenhouse gas-induced warming. Aerosol-induced suppression of the East Asian and South Asian summer monsoon precipitation occurs. The enhanced Asian aerosol emissions also remotely impact precipitation in other parts of the world. Over Australia, austral summer monsoon precipitation is enhanced, an effect associated with a southward shift of the intertropical convergence zone, driven by the aerosol-induced cooling of the Northern Hemisphere. Over the Sahel, West African monsoon precipitation is suppressed, likely via a weakening of the West African westerly jet. These results indicate that fuel usage in Asia, through the consequent aerosol emissions and associated radiative effects, might significantly influence future climate both locally and globally. © 2016 American Meteorological Society. 资助项目: DOE, U.S. Department of Energy
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/49988
Appears in Collections: 气候变化事实与影响
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作者单位: Center for Environmental Sensing and Modeling, Singapore-MIT Alliance for Research and Technology, Singapore; Center for Global Change Science, Massachusetts Institute of Technology, Cambridge, MA, United States
Recommended Citation:
Grandey B.S.,Cheng H.,Wang C.. Transient climate impacts for scenarios of aerosol emissions from Asia: A story of coal versus gas[J]. Journal of Climate,2016-01-01,29(8)