Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0441.1 |
La Nina-like Mean-State Response to Global Warming and Potential Oceanic Roles | |
Kohyama, Tsubasa; Hartmann, Dennis L.; Battisti, David S. | |
2017-06-01 | |
发表期刊 | JOURNAL OF CLIMATE
![]() |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | The majority of the models that participated in phase 5 of the Coupled Model Intercomparison Project global warming experiments warm faster in the eastern equatorial Pacific Ocean than in the west. GFDL-ESM2M is an exception among the state-of-the-art global climate models in that the equatorial Pacific sea surface temperature (SST) in the west warms faster than in the east, and the Walker circulation strengthens in response to warming. This study shows that this ''La Nina-like'' trend simulated by GFDL-ESM2M could be a physically consistent response to warming, and that the forced response could have been detectable since the late twentieth century. Two additional models are examined: GFDL-ESM2G, which differs from GFDL-ESM2M only in the oceanic components, warms without a clear zonal SST gradient; and HadGEM2-CC exhibits a warming pattern that resembles the multimodel mean. Afundamental observed constraint between the amplitude of El Nino-Southern Oscillation (ENSO) and the mean-state zonal SST gradient is reproduced well by GFDL-ESM2M but not by the other two models, which display substantially weaker ENSO nonlinearity than is observed. Under this constraint, the weakening nonlinear ENSO amplitude in GFDLESM2M rectifies the mean state to be La Nina-like. GFDL-ESM2M exhibits more realistic equatorial thermal stratification than GFDL-ESM2G, which appears to be the most important difference for the ENSO nonlinearity. On longer time scales, the weaker polar amplification in GFDL-ESM2M may also explain the origin of the colder equatorial upwelling water, which could in turn weaken the ENSO amplitude. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000401007500016 |
WOS关键词 | TROPICAL PACIFIC CLIMATE ; EQUATORIAL PACIFIC ; PART I ; CMIP5 ; PATTERN ; CIRCULATION ; ASYMMETRY ; WALKER ; MODEL ; UNCERTAINTY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19378 |
专题 | 气候变化 |
作者单位 | Univ Washington, Dept Atmospher Sci, Seattle, WA 98195 USA |
推荐引用方式 GB/T 7714 | Kohyama, Tsubasa,Hartmann, Dennis L.,Battisti, David S.. La Nina-like Mean-State Response to Global Warming and Potential Oceanic Roles[J]. JOURNAL OF CLIMATE,2017,30(11). |
APA | Kohyama, Tsubasa,Hartmann, Dennis L.,&Battisti, David S..(2017).La Nina-like Mean-State Response to Global Warming and Potential Oceanic Roles.JOURNAL OF CLIMATE,30(11). |
MLA | Kohyama, Tsubasa,et al."La Nina-like Mean-State Response to Global Warming and Potential Oceanic Roles".JOURNAL OF CLIMATE 30.11(2017). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论