Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-20-5249-2020 |
Hadley cell expansion in CMIP6 models | |
Grise, Kevin M.1; Davis, Sean M.2 | |
2020-05-06 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
![]() |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2020 |
卷号 | 20期号:9页码:5249-5268 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | In response to increasing greenhouse gases, the subtropical edges of Earth's Hadley circulation shift poleward in global climate models. Recent studies have found that reanalysis trends in the Hadley cell edge over the past 30-40 years are within the range of trends simulated by Coupled Model Intercomparison Project Phase 5 (CMIP5) models and have documented seasonal and hemispheric asymmetries in these trends. In this study, we evaluate whether these conclusions hold for the newest generation of models (CMIP6). Overall, we find similar characteristics of Hadley cell expansion in CMIP5 and CMIP6 models. In both CMIP5 and CMIP6 models, the poleward shift of the Hadley cell edge in response to increasing greenhouse gases is 2-3 times larger in the Southern Hemisphere (SH), except during September-November. The trends from CMIP5 and CMIP6 models agree well with reanalyses, although prescribing observed coupled atmosphere-ocean variability allows the models to better capture reanalysis trends in the Northern Hemisphere (NH). We find two notable differences between CMIP5 and CMIP6 models. First, while both CMIP5 and CMIP6 models contract the NH summertime Hadley circulation equatorward (particularly over the Pacific sector), this contraction is larger in CMIP6 models due to their higher average climate sensitivity. Second, in recent decades, the poleward shift of the NH annual-mean Hadley cell edge is slightly larger in CMIP6 models. Increasing greenhouse gases drive similar trends in CMIP5 and CMIP6 models, so the larger recent NH trends in CMIP6 models point to the role of other forcings, such as aerosols. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000531851600001 |
WOS关键词 | RECENT TROPICAL EXPANSION ; POLEWARD EXPANSION ; CLIMATE MODELS ; BLACK CARBON ; WIDTH ; CIRCULATION ; BELT ; VARIABILITY ; ATTRIBUTION ; REANALYSES |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
URL | 查看原文 |
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/248805 |
专题 | 地球科学 |
作者单位 | 1.Univ Virginia, Dept Environm Sci, Charlottesville, VA 22904 USA; 2.NOAA, Earth Syst Res Lab, Chem Sci Div, Boulder, CO 80305 USA |
推荐引用方式 GB/T 7714 | Grise, Kevin M.,Davis, Sean M.. Hadley cell expansion in CMIP6 models[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2020,20(9):5249-5268. |
APA | Grise, Kevin M.,&Davis, Sean M..(2020).Hadley cell expansion in CMIP6 models.ATMOSPHERIC CHEMISTRY AND PHYSICS,20(9),5249-5268. |
MLA | Grise, Kevin M.,et al."Hadley cell expansion in CMIP6 models".ATMOSPHERIC CHEMISTRY AND PHYSICS 20.9(2020):5249-5268. |
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