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DOI | 10.1007/s00382-018-4576-6 |
Robustness of the stratospheric pathway in linking the Barents-Kara Sea sea ice variability to the mid-latitude circulation in CMIP5 models | |
De, Bithi1,2; Wu, Yutian2 | |
2019-07-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:193-207 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | This study investigates the robustness of the stratospheric pathway in linking the sea ice variability over the Barents-Kara Sea in late autumn and early winter to the mid-latitude circulation in the subsequent winter. Two groups of models from the Coupled Model Intercomparison Project phase 5 (CMIP5) archive, one with a well-resolved stratosphere (high-top models) and the other with a poorly-resolved stratosphere (low-top models) are explored to distinguish the role of the stratospheric pathway. The results show that, collectively, high-top models are able to capture the persistent mid-latitude circulation response in the subsequent winter. The response in low-top models is, however, weaker and not as long-lasting most likely due to lack of stratospheric variability. Analysis of eddy heat flux reveals that stronger vertical wave propagation leads to a stronger response in stratospheric polar vortex in high-top models. In particular, it shows that zonal wave-2 eddy heat flux is crucial in leading to a stronger linear constructive interference with the climatological waves in high-top models. The results find that multi-model ensemble of CMIP5 high-top models is able to capture the prolonged impact of sea ice variability on the mid-latitude circulation and out performs the low-top models in this regard. Our study suggests that the representation of the stratosphere in climate models plays an important role in amplifying and extending the mid-latitude circulation response. |
英文关键词 | CMIP5 Barents-Kara Sea sea ice variability Troposphere-stratosphere coupling Planetary scale waves |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000471722400011 |
WOS关键词 | ARCTIC AMPLIFICATION ; ATMOSPHERIC RESPONSE ; COLD WINTERS ; CLIMATE ; CONFIGURATION ; TROPOSPHERE ; IMPACTS ; WEATHER ; FLUX |
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/184365 |
专题 | 气候变化 |
作者单位 | 1.Purdue Univ, Dept Earth Atmospher & Planetary Sci, W Lafayette, IN 47907 USA; 2.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY 10964 USA |
推荐引用方式 GB/T 7714 | De, Bithi,Wu, Yutian. Robustness of the stratospheric pathway in linking the Barents-Kara Sea sea ice variability to the mid-latitude circulation in CMIP5 models[J]. CLIMATE DYNAMICS,2019,53:193-207. |
APA | De, Bithi,&Wu, Yutian.(2019).Robustness of the stratospheric pathway in linking the Barents-Kara Sea sea ice variability to the mid-latitude circulation in CMIP5 models.CLIMATE DYNAMICS,53,193-207. |
MLA | De, Bithi,et al."Robustness of the stratospheric pathway in linking the Barents-Kara Sea sea ice variability to the mid-latitude circulation in CMIP5 models".CLIMATE DYNAMICS 53(2019):193-207. |
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