DOI: 10.1002/grl.50318
论文题名: Hydrological sensitivity to greenhouse gases and aerosols in a global climate model
作者: Kvalevåg M.M. ; Samset B.H. ; Myhre G.
刊名: Geophysical Research Letters
ISSN: 0094-9200
EISSN: 1944-8931
出版年: 2013
卷: 40, 期: 7 起始页码: 1432
结束页码: 1438
语种: 英语
英文关键词: BC aerosols
; energy budget
; GCM
; hydrological sensitivity
; precipitation
; radiative forcing
Scopus关键词: Atmospheric water vapor
; Energy budgets
; GCM
; hydrological sensitivity
; National center for atmospheric researches
; Radiative forcings
; Surface temperature changes
; Top of the atmospheres
; Atmospheric radiation
; Atmospheric temperature
; Budget control
; Carbon dioxide
; Climate models
; Climatology
; Global warming
; Greenhouse gases
; Lasers
; Moisture
; Precipitation (chemical)
; Surface properties
; Vapors
; Atmospheric aerosols
; aerosol
; climate effect
; climate modeling
; energy budget
; global climate
; global warming
; greenhouse gas
; precipitation (climatology)
; sensitivity analysis
; surface temperature
; water vapor
英文摘要: Changes in greenhouse gases and aerosols alter the atmospheric energy budget on different time scales and at different levels in the atmosphere. We study the relationship between global mean precipitation changes, radiative forcing, and surface temperature change since preindustrial times caused by several climate change components (CO2, CH4, sulphate and black carbon (BC) aerosols, and solar forcing) using the National Center for Atmospheric Research Community Earth System Model (CESM1.03). We find a fast response in precipitation due to atmospheric instability that correlates with radiative forcing associated with atmospheric absorption and a slower response caused by changes in surface temperature which correlates with radiative forcing at the top of the atmosphere. In general, global climate models show large differences in climate response to global warming, but here we find a strong relationship between global mean radiative forcing and global mean precipitation changes that is very consistent with other models, indicating that precipitation changes from a particular forcing mechanism are more robust than previously expected. In addition, we look at the precipitation response and relate it to changes in lifetime of atmospheric water vapor (τ). BC aerosols have a significantly larger impact on changes in τ related to surface temperature compared to greenhouse gases, sulphate aerosols, and solar forcing and are the dominating forcing mechanism affecting fast precipitation in this quantity. Key Points Global mean precipitation changes are strongly correlated to forcing mechanisms GHG and SO4 have the same impact on the lifetime of atmospheric water vapor BC aerosols are the driving forcing mechanism for fast precipitation response ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84876893203&doi=10.1002%2fgrl.50318&partnerID=40&md5=20829c21a983b58fbfd2cd4bf3c6c39e
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6464
Appears in Collections: 气候减缓与适应
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作者单位: Center for International Climate and Environmental Research-Oslo (CICERO), P.B. 1129 Blindern, 0318 Oslo, Norway
Recommended Citation:
Kvalevåg M.M.,Samset B.H.,Myhre G.. Hydrological sensitivity to greenhouse gases and aerosols in a global climate model[J]. Geophysical Research Letters,2013-01-01,40(7).