Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-017-3624-y |
Prolonged effect of the stratospheric pathway in linking Barents-Kara Sea sea ice variability to the midlatitude circulation in a simplified model | |
Zhang, Pengfei1; Wu, Yutian1; Smith, Karen L.2 | |
2018 | |
发表期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:527-539 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | To better understand the dynamical mechanism that accounts for the observed lead-lag correlation between the early winter Barents-Kara Sea (BKS) sea ice variability and the later winter midlatitude circulation response, a series of experiments are conducted using a simplified atmospheric general circulation model with a prescribed idealized near-surface heating over the BKS. A prolonged effect is found in the idealized experiments following the near-surface heating and can be explicitly attributed to the stratospheric pathway and the long time scale in the stratosphere. The analysis of the Eliassen-Palm flux shows that, as a result of the imposed heating and linear constructive interference, anomalous upward propagating planetary-scale waves are excited and weaken the stratospheric polar vortex. This stratospheric response persists for approximately 1-2 months accompanied by downward migration to the troposphere and the surface. This downward migration largely amplifies and extends the low-level jet deceleration in the midlatitudes and cold air advection over central Asia. The idealized model experiments also suggest that the BKS region is the most effective in affecting the midlatitude circulation than other regions over the Arctic. |
英文关键词 | Stratosphere-troposphere coupling Nudging method Planetary-scale wave propagation Barents-Kara Sea sea ice Midlatitude low-level jet Cold advection over central Asia |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000422908700033 |
WOS关键词 | RELATIVELY SIMPLE AGCM ; ATMOSPHERIC CIRCULATION ; ARCTIC AMPLIFICATION ; DYNAMICAL LINK ; COLD WINTERS ; TROPOSPHERE ; IMPACT ; MECHANISMS ; SST |
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/35777 |
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 USA |
推荐引用方式 GB/T 7714 | Zhang, Pengfei,Wu, Yutian,Smith, Karen L.. Prolonged effect of the stratospheric pathway in linking Barents-Kara Sea sea ice variability to the midlatitude circulation in a simplified model[J]. CLIMATE DYNAMICS,2018,50:527-539. |
APA | Zhang, Pengfei,Wu, Yutian,&Smith, Karen L..(2018).Prolonged effect of the stratospheric pathway in linking Barents-Kara Sea sea ice variability to the midlatitude circulation in a simplified model.CLIMATE DYNAMICS,50,527-539. |
MLA | Zhang, Pengfei,et al."Prolonged effect of the stratospheric pathway in linking Barents-Kara Sea sea ice variability to the midlatitude circulation in a simplified model".CLIMATE DYNAMICS 50(2018):527-539. |
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