DOI: 10.1175/JCLI-D-15-0477.1
Scopus记录号: 2-s2.0-84960876143
论文题名: An energy conservation analysis of ocean drift in the CMIP5 global coupled models
作者: Hobbs W. ; Palmer M.D. ; Monselesan D.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2016
卷: 29, 期: 5 起始页码: 1639
结束页码: 1653
语种: 英语
Scopus关键词: Budget control
; Climate change
; Earth (planet)
; Budgets
; Climate sensitivity
; Conservation equations
; Model comparison
; Model evaluation/performance
; Climate models
; atmospheric circulation
; climate change
; climate modeling
; comparative study
; energy budget
; energy dissipation
; oceanic circulation
英文摘要: Climate model simulations of changes to Earth's energy budget are fundamental to improve understanding of both historical and future climate change. However, coupled models are prone to "drift" (i.e., they contain spurious unforced trends in state variables) due to incomplete spinup or nonclosure of the energy budget. This work assesses the globally integrated energy budgets of 25 models in phase 5 of CMIP (CMIP5). It is shown that for many of the models there is a significant disagreement between ocean heat content changes and net top-of-atmosphere radiation. The disagreement is largely time-constant and independent of forcing scenario. Furthermore, most of the nonconservation seems to occur as a result of energy leaks external to the ocean model realm. After drift correction, the time-varying energy budget is consistent at decadal time scales, and model responses to climate forcing are not sensitive to the magnitude of their drift. This demonstrates that, although drift terms can be significant, model output can be corrected post hoc without biasing results. © 2016 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/50096
Appears in Collections: 气候变化事实与影响
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作者单位: ARC Centre of Excellence for Climate System Science, IMAS and Antarctic Climate and Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, TAS, Australia; Met Office Hadley Centre, Exeter, United Kingdom; CSIRO Oceans and Atmosphere, Hobart, TAS, Australia
Recommended Citation:
Hobbs W.,Palmer M.D.,Monselesan D.. An energy conservation analysis of ocean drift in the CMIP5 global coupled models[J]. Journal of Climate,2016-01-01,29(5)