DOI: 10.1007/s00382-011-1063-8
Scopus记录号: 2-s2.0-85027955825
论文题名: The passive and active nature of ocean heat uptake in idealized climate change experiments
作者: Xie P. ; Vallis G.K.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2012
卷: 38, 期: 2017-03-04 起始页码: 667
结束页码: 684
英文关键词: Circulation changes
; Climate Change
; Effective system heat capacity
; Ocean heat uptake
; Passive tracer
英文摘要: The influence of ocean circulation changes on heat uptake is explored using a simply-configured primitive equation ocean model resembling a very idealized Atlantic Ocean. We focus on the relative importance of the redistribution of the existing heat reservoir (due to changes in the circulation) and the contribution from anomalous surface heat flux, in experiments in which the surface boundary conditions are changed. We perform and analyze numerical experiments over a wide range of parameters, including experiments that simulate global warming and others that explore the robustness of our results to more general changes in surface boundary conditions. We find that over a wide range of values of diapycnal diffusivity and Southern Ocean winds, and with a variety of changes in surface boundary conditions, the spatial patterns of ocean temperature anomaly are nearly always determined as much or more by the existing heat reservoir redistribution than by the nearly passive uptake of temperature due to changes in the surface boundary conditions. Calculating heat uptake by neglecting the existing reservoir redistribution, which is similar to treating temperature as a passive tracer, leads to significant quantitative errors notably at high-latitudes and, secondarily, in parts of the main thermocline. Experiments with larger circulation changes tend to produce a relatively larger magnitude of existing reservoir redistribution, and a faster growing effective heat capacity of the system. The effective heat capacity is found to be sensitive to both vertical diffusivity and Southern Ocean wind. © 2011 Springer-Verlag. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/55421
Appears in Collections: 过去全球变化的重建
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作者单位: AOS Program, Princeton University, Princeton, NJ 08544, United States
Recommended Citation:
Xie P.,Vallis G.K.. The passive and active nature of ocean heat uptake in idealized climate change experiments[J]. Climate Dynamics,2012-01-01,38(2017-03-04)