Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL090590 |
Attenuated interannual variability of austral winter Antarctic sea ice over recent decades | |
Shujun Li; Wenju Cai; Lixin Wu | |
2020-10-29 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2020 |
英文摘要 | Changes in Antarctic sea ice modify surface circulation, deep‐water formation and overturning circulation, affecting the ecosystem and the atmosphere‐ocean‐ice interaction. Recent studies focused on long‐term trends of Antarctic sea ice, but whether its variability has changed is less clear. By examining reanalysis datasets, we show an interdecadal attenuation in variability of austral winter Antarctic sea ice since the late 1990s. This mainly arises from declined surface pressure variations in response to a combined effect of El Niño–Southern Oscillation (ENSO) and the Southern Annular Mode (SAM). Compared to the pre‐1999 period, ENSO and the SAM have reduced variability in the post‐1999 period, and the linkage between them and Antarctic climate has weakened. The decreased level of variability over the 1999‐2017 period may facilitate a more sensitive response of Antarctic sea ice to an external forcing, by enhancing the signal‐to‐noise ratio. |
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/301802 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Shujun Li,Wenju Cai,Lixin Wu. Attenuated interannual variability of austral winter Antarctic sea ice over recent decades[J]. Geophysical Research Letters,2020. |
APA | Shujun Li,Wenju Cai,&Lixin Wu.(2020).Attenuated interannual variability of austral winter Antarctic sea ice over recent decades.Geophysical Research Letters. |
MLA | Shujun Li,et al."Attenuated interannual variability of austral winter Antarctic sea ice over recent decades".Geophysical Research Letters (2020). |
条目包含的文件 | 条目无相关文件。 |
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