DOI: 10.1175/JCLI-D-13-00658.1
Scopus记录号: 2-s2.0-84904479647
论文题名: Individual feedback contributions to the seasonality of surface warming
作者: Sejas S.A. ; Cai M. ; Hu A. ; Meehl G.A. ; Washington W. ; Taylor P.C.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2014
卷: 27, 期: 14 起始页码: 5653
结束页码: 5669
语种: 英语
Scopus关键词: Atmospheric radiation
; Atmospheric temperature
; Carbon dioxide
; Climate change
; Climate models
; Computer simulation
; Heat storage
; Incident solar radiation
; Water vapor
; Atmospheric dynamics
; Community climate system model
; Forcing
; Radiative forcings
; Seasonal cycle
; Seasonal variation
; Surface temperatures
; Water vapor feedbacks
; Feedback
; carbon dioxide
; climate change
; climate feedback
; radiative forcing
; seasonal variation
; seasonality
; surface temperature
英文摘要: Using the climate feedback response analysis method, the authors examine the individual contributions of the CO2 radiative forcing and climate feedbacks to the magnitude, spatial pattern, and seasonality of the transient surface warming response in a 1%yr-1 CO2 increase simulation of the NCAR Community Climate System Model, version 4 (CCSM4). The CO2 forcing and water vapor feedback warm the surface everywhere throughout the year. The tropical warming is predominantly caused by the CO2 forcing and water vapor feedback, while the evaporation feedback reduces the warming. Most feedbacks exhibit noticeable seasonal variations; however, their net effect has little seasonal variation due to compensating effects, which keeps the tropical warming relatively invariant all year long. The polar warming has a pronounced seasonal cycle, with maximum warming in fall/winter and minimum warming in summer. In summer, the large cancelations between the shortwave and longwave cloud feedbacks and between the surface albedo feedback warming and the cooling from the ocean heat storage/dynamics feedback lead to a warming minimum. In polar winter, surface albedo and shortwave cloud feedbacks are nearly absent due to a lack of insolation. However, the ocean heat storage feedback relays the polar warming due to the surface albedo feedback from summer to winter, and the longwave cloud feedback warms the polar surface. Therefore, the seasonal variations in the cloud feedback, surface albedo feedback, and ocean heat storage/dynamics feedback, directly caused by the strong annual cycle of insolation, contribute primarily to the large seasonal variation of polar warming. Furthermore, the CO2 forcing and water vapor and atmospheric dynamics feedbacks add to the maximum polar warming in fall/winter. © 2014 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51392
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Earth, Ocean, and Atmospheric Science, Florida State University, Tallahassee, FL, United States; Climate Change Research, Climate and Global Dynamics, National Center for Atmospheric Research, Boulder, CO, United States; NASA Langley Research Center, Hampton, VA, United States
Recommended Citation:
Sejas S.A.,Cai M.,Hu A.,et al. Individual feedback contributions to the seasonality of surface warming[J]. Journal of Climate,2014-01-01,27(14)