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| DOI | 10.1175/JCLI-D-23-0119.1 |
| Coupled Stratospheric Ozone and Atlantic Meridional Overturning Circulation Feedbacks on the Northern Hemisphere Midlatitude Jet Response to 4xCO 2 | |
| 发表日期 | 2024 |
| ISSN | 0894-8755 |
| EISSN | 1520-0442 |
| 起始页码 | 37 |
| 结束页码 | 10 |
| 卷号 | 37期号:10 |
| 英文摘要 | Stratospheric ozone, and its response to anthropogenic forcings, provides an important pathway for the coupling between atmospheric composition and climate. In addition to stratospheric ozone ' s radiative impacts, recent studies have shown that changes in the ozone layer due to 4xCO 2 have a considerable impact on the Northern Hemisphere (NH) tropospheric circulation, inducing an equatorward shift of the North Atlantic jet during boreal winter. Using simulations produced with the NASA Goddard Institute for Space Studies (GISS) high -top climate model (E2.2), we show that this equatorward shift of the Atlantic jet can induce a more rapid weakening of the Atlantic meridional overturning circulation (AMOC). The weaker AMOC, in turn, results in an eastward acceleration and poleward shift of the Atlantic and Paci fi c jets, respectively, on longer time scales. As such, coupled feedbacks from both stratospheric ozone and the AMOC result in a two -time -scale response of the NH midlatitude jet to abrupt 4xCO 2 forcing: a fast response (5 - 20 years) during which it shifts equatorward and a total response ( ; 100 - 150 years) during which the jet accelerates and shifts poleward. The latter is driven by a weakening of the AMOC that develops in response to weaker surface zonal winds that result in reduced heat fl uxes out of the subpolar gyre and reduced North Atlantic Deep Water formation. Our results suggest that stratospheric ozone changes in the lower stratosphere can have a surprisingly powerful effect on the AMOC, independent of other aspects of climate change. |
| 英文关键词 | Atmosphere - ocean interaction; Atmospheric circulation; General circulation models; Atmospheric composition |
| 语种 | 英语 |
| WOS研究方向 | Meteorology & Atmospheric Sciences |
| WOS类目 | Meteorology & Atmospheric Sciences |
| WOS记录号 | WOS:001218897100001 |
| 来源期刊 | JOURNAL OF CLIMATE
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301230 |
| 作者单位 | National Aeronautics & Space Administration (NASA); NASA Goddard Space Flight Center; Goddard Institute for Space Studies; Columbia University; Johns Hopkins University; Columbia University |
| 推荐引用方式 GB/T 7714 | . Coupled Stratospheric Ozone and Atlantic Meridional Overturning Circulation Feedbacks on the Northern Hemisphere Midlatitude Jet Response to 4xCO 2[J],2024,37(10). |
| APA | (2024).Coupled Stratospheric Ozone and Atlantic Meridional Overturning Circulation Feedbacks on the Northern Hemisphere Midlatitude Jet Response to 4xCO 2.JOURNAL OF CLIMATE,37(10). |
| MLA | "Coupled Stratospheric Ozone and Atlantic Meridional Overturning Circulation Feedbacks on the Northern Hemisphere Midlatitude Jet Response to 4xCO 2".JOURNAL OF CLIMATE 37.10(2024). |
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