DOI: 10.1175/JCLI-D-12-00631.1
Scopus记录号: 2-s2.0-84883255237
论文题名: The nonlinear and nonlocal nature of climate feedbacks
作者: Feldl N. ; Roe G.H.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 21 起始页码: 8289
结束页码: 8304
语种: 英语
Scopus关键词: Atmospheric process
; Climate feedbacks
; Climate forcings
; Energy budget/balance
; Energy transport
; Nonlinear interactions
; Radiation budget
; Radiative forcings
; Atmospheric radiation
; Feedback
; Heat flux
; Nonlinear analysis
; Nonlinear optics
; Nonlinear feedback
; climate feedback
; climate forcing
; energy balance
; energy budget
; radiation budget
; radiative forcing
英文摘要: The climate feedback framework partitions the radiative response to climate forcing into contributions from individual atmospheric processes. The goal of this study is to understand the closure of the energy budget in as much detail and precision as possible, within as clean an experimental setup as possible. Radiative kernels and radiative forcing are diagnosed for an aquaplanet simulation under perpetual equinox conditions. The role of the meridional structure of feedbacks, heat transport, and nonlinearities in controlling the local climate response is characterized. Results display a combination of positive subtropical feedbacks and polar amplified warming. These two factors imply a critical role for transport and nonlinear effects, with the latter acting to substantially reduce global climate sensitivity. At the hemispheric scale, a rich picture emerges: anomalous divergence of heat flux away from positive feedbacks in the subtropics; nonlinear interactions among and within clear-sky feedbacks, which reinforce the pattern of tropical cooling and high-latitude warming tendencies; and strong ice-line feedbacks that drive further amplification of polar warming. These results have implications for regional climate predictability, by providing an indication of how spatial patterns in feedbacks combine to affect both the local and nonlocal climate response, and how constraining uncertainty in those feedbacks may constrain the climate response. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51532
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; Department of Earth and Space Sciences, University of Washington, Seattle, WA, United States
Recommended Citation:
Feldl N.,Roe G.H.. The nonlinear and nonlocal nature of climate feedbacks[J]. Journal of Climate,2013-01-01,26(21)