DOI: 10.1175/JCLI-D-12-00515.1
Scopus记录号: 2-s2.0-84878980180
论文题名: Centennial trend and decadal-to-interdecadal variability of atmospheric angular momentum in CMIP3 and CMIP5 simulations
作者: Paek H. ; Huang H.-P.
刊名: Journal of Climate
ISSN: 8948755
出版年: 2013
卷: 26, 期: 11 起始页码: 3846
结束页码: 3864
语种: 英语
Scopus关键词: Ensemble averaging
; Greenhouse gas (GHG)
; Individual models
; Inter-decadal variability
; Model inter comparisons
; Reanalysis
; Standard deviation
; Twentieth century
; Angular momentum
; Climatology
; Greenhouse gases
; Climate models
; angular momentum
; climate change
; climate modeling
; climatology
; computer simulation
; decadal variation
; greenhouse gas
; trend analysis
; twentieth century
; twenty first century
英文摘要: The climatology and trend of atmospheric angular momentum from the phase 3 and the phase 5 Climate Model Intercomparison Project (CMIP3 and CMIP5, respectively) simulations are diagnosed and validated with the Twentieth Century Reanalysis (20CR). It is found that CMIP5 models produced a significantly smaller bias in the twentieth-century climatology of the relative MRM and omega Mω angular momentum compared to CMIP3. The CMIP5 models also produced a narrower ensemble spread of the climatology and trend of MRM and Mω. Both CMIP3 and CMIP5 simulations consistently produced a positive trend in MRM and MV for the twentieth and twenty-first centuries. The trend for the twenty-first century is much greater, reflecting the role of greenhouse gas (GHG) forcing in inducing the trend. The simulated increase inMRM for the twentieth century is consistent with reanalysis. Both CMIP3 and CMIP5 models produced a wide range of magnitudes of decadal and interdecadal variability of MRM compared to 20CR. The ratio of the simulated standard deviation of decadal or interdecadal variability to its observed counterpart ranges from 0.5 to over 2.0 for individual models. Nevertheless, the bias is largely random and ensemble averaging brings the ratio to within 18% of the reanalysis for decadal and interdecadal variability for both CMIP3 and CMIP5. The twentyfirst- century simulations from both CMIP3 and CMIP5 produced only a small trend in the amplitude of decadal or interdecadal variability, which is not statistically significant. Thus, while GHG forcing induces a significant increase in the climatological mean of angular momentum, it does not significantly affect its decadal-to-interdecadal variability in the twenty-first century. © 2013 American Meteorological Society. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/51842
Appears in Collections: 气候变化事实与影响
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作者单位: School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ, United States
Recommended Citation:
Paek H.,Huang H.-P.. Centennial trend and decadal-to-interdecadal variability of atmospheric angular momentum in CMIP3 and CMIP5 simulations[J]. Journal of Climate,2013-01-01,26(11)