DOI: 10.1002/2015GL065889
论文题名: Conceptual model analysis of the influence of temperature feedbacks on polar amplification
作者: Payne A.E. ; Jansen M.F. ; Cronin T.W.
刊名: Geophysical Research Letters
ISSN: 0094-8533
EISSN: 1944-8264
出版年: 2015
卷: 42, 期: 21 起始页码: 9561
结束页码: 9570
语种: 英语
英文关键词: lapse rate feedback
; polar amplification
; temperature feedbacks
Scopus关键词: Climate change
; Feedback
; Greenhouse gases
; Heat flux
; Solar heating
; Analytic expressions
; Atmospheric columns
; Destabilizing influences
; Greenhouse-gas forcing
; Lapse rate
; Polar amplifications
; Temperature feedback
; Temperature profiles
; Atmospheric temperature
; advection
; altitude
; amplification
; analytical framework
; atmospheric forcing
; atmospheric modeling
; climate change
; climate feedback
; conceptual framework
; greenhouse gas
; heat flux
; polar front
; radiative transfer
; solar activity
; temperature profile
英文摘要: The role of temperature feedbacks in polar amplification of climate change is examined by comparing the response of idealized high- and low-latitude atmospheric columns to greenhouse gas forcing. An analytic expression for the surface polar amplification factor is derived with a one-layer atmospheric model and compared to a more detailed column model with two radiative transfer schemes. The modeled temperature profiles result from competition between the stabilizing influences of atmospheric heat flux convergence and atmospheric solar heating (dominant at high latitudes), and the destabilizing influence of surface solar heating (dominant at low latitudes). For a stable high-latitude radiative-advective atmosphere, the lapse rate increases with greenhouse gas forcing, leading to a positive feedback, and is dependent on the nature of the forcing - pointing to limitations of the traditional forcing-feedback framework. For a low-latitude radiative-convective atmosphere, the lapse rate decreases, leading to a negative feedback. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84955169719&doi=10.1002%2f2015GL065889&partnerID=40&md5=d28ac44a44eab8d9c7671fdbc5e8eaa4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8149
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Department of Earth System Science, University of California, Irvine, CA, United States
Recommended Citation:
Payne A.E.,Jansen M.F.,Cronin T.W.. Conceptual model analysis of the influence of temperature feedbacks on polar amplification[J]. Geophysical Research Letters,2015-01-01,42(21).