Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092726 |
Diverse Eurasian Winter Temperature Responses to Barents-Kara Sea Ice Anomalies of Different Magnitudes and Seasonality | |
Ruonan Zhang; James A. Screen | |
2021-06-16 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | The sea-ice-driven component of observed Eurasian temperature variability, estimated by comparing multimodel large-ensemble simulations prescribed with either time-varying or climatological sea-ice, suggests an intermittent causal effect of Barents-Kara sea-ice on Eurasian winter temperature. To better understand this intermittency, bespoke atmospheric model experiments were conducted with the seasonality, sign and magnitude of sea-ice anomalies systematically altered. Stronger Eurasian cooling is found in response to modest than to large autumn sea-ice loss, because of nonlinear wave-mean-flow interactions that, via a stratospheric pathway, govern the dynamical responses. Winter sea-ice loss tends to induce Eurasian warming, via thermodynamical effects, which scale approximately linearly with the magnitude of sea-ice loss. Complete loss of sea-ice led to Eurasian warming, suggesting the thermodynamical response dominates when sea-ice loss is sufficiently large. Our results have implications for the stationarity, or lack thereof, of Arctic-to-midlatitude connections, and also for reconciling discrepancies between model experiments with different sea-ice perturbations. |
领域 | 气候变化 |
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/330781 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Ruonan Zhang,James A. Screen. Diverse Eurasian Winter Temperature Responses to Barents-Kara Sea Ice Anomalies of Different Magnitudes and Seasonality[J]. Geophysical Research Letters,2021. |
APA | Ruonan Zhang,&James A. Screen.(2021).Diverse Eurasian Winter Temperature Responses to Barents-Kara Sea Ice Anomalies of Different Magnitudes and Seasonality.Geophysical Research Letters. |
MLA | Ruonan Zhang,et al."Diverse Eurasian Winter Temperature Responses to Barents-Kara Sea Ice Anomalies of Different Magnitudes and Seasonality".Geophysical Research Letters (2021). |
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