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DOI | 10.1175/JCLI-D-17-0382.1 |
Downward Wave Coupling between the Stratosphere and Troposphere under Future Anthropogenic Climate Change | |
Lubis, Sandro W.1,6; Matthes, Katja1,2; Harnik, Nili3; Omrani, Nour-Eddine4,5; Wahl, Sebastian1 | |
2018-05-01 | |
发表期刊 | JOURNAL OF CLIMATE
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ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2018 |
卷号 | 31期号:10页码:4135-4155 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Israel; Norway; USA |
英文摘要 | Downward wave coupling (DWC) is an important process that characterizes the dynamical coupling between the stratosphere and troposphere via planetary wave reflection. A recent modeling study has indicated that natural forcing factors, including sea surface temperature (SST) variability and the quasi-biennial oscillation (QBO), influence DWC and the associated surface impact in the Northern Hemisphere (NH). In light of this, the authors further investigate how DWC in the NH is affected by anthropogenic forcings, using a fully coupled chemistry-climate model CESM1(WACCM). The results indicate that the occurrence of DWC is significantly suppressed in the future, starting later in the seasonal cycle, with more events concentrated in late winter (February and March). The future decrease in DWC events is associated with enhanced wave absorption in the stratosphere due to increased greenhouse gases (GHGs), which is manifest as more absorbing types of stratospheric sudden warmings (SSWs) in early winter. This early winter condition leads to a delay in the development of the upper-stratospheric reflecting surface, resulting in a shift in the seasonal cycle of DWC toward late winter in the future. The tropospheric responses to DWC events in the future exhibit different spatial patterns, compared to those of the past. In the North Atlantic sector, DWC-induced circulation changes are characterized by a poleward shift and an eastward extension of the tropospheric jet, while in the North Pacific sector, the circulation changes are characterized by a weakening of the tropospheric jet. These responses are consistent with a change in the pattern of DWC-induced synoptic-scale eddy-mean flow interaction in the future. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431102200002 |
WOS关键词 | ATLANTIC STORM-TRACK ; EARTH SYSTEM MODEL ; 11-YR SOLAR-CYCLE ; NORTHERN-HEMISPHERE ; PLANETARY-WAVES ; VARIABILITY ; PROPAGATION ; REFLECTION ; ATMOSPHERE ; WARMINGS |
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/20359 |
专题 | 气候变化 |
作者单位 | 1.GEOMAR Helmholtz Ctr Ocean Res Kiel, Kiel, Germany; 2.Christian Albrechts Univ Kiel, Kiel, Germany; 3.Tel Aviv Univ, Dept Geophys, Tel Aviv, Israel; 4.Univ Bergen, Geophys Inst, Bergen, Norway; 5.Bjerknes Ctr Climate Res, Bergen, Norway; 6.Univ Chicago, Dept Geophys Sci, 5734 S Ellis Ave, Chicago, IL 60637 USA |
推荐引用方式 GB/T 7714 | Lubis, Sandro W.,Matthes, Katja,Harnik, Nili,et al. Downward Wave Coupling between the Stratosphere and Troposphere under Future Anthropogenic Climate Change[J]. JOURNAL OF CLIMATE,2018,31(10):4135-4155. |
APA | Lubis, Sandro W.,Matthes, Katja,Harnik, Nili,Omrani, Nour-Eddine,&Wahl, Sebastian.(2018).Downward Wave Coupling between the Stratosphere and Troposphere under Future Anthropogenic Climate Change.JOURNAL OF CLIMATE,31(10),4135-4155. |
MLA | Lubis, Sandro W.,et al."Downward Wave Coupling between the Stratosphere and Troposphere under Future Anthropogenic Climate Change".JOURNAL OF CLIMATE 31.10(2018):4135-4155. |
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