Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092409 |
Sea ice changes in the Pacific sector of the Southern Ocean in austral autumn closely associated with the negative polarity of the South Pacific Oscillation | |
Lejiang Yu; Shiyuan Zhong; Timo Vihma; Cuijuan Sui; Bo Sun | |
2021-03-27 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | We present an explanation for the sea ice concentration trends in the Pacific sector of the Southern Ocean (PSSO) in austral autumn (April‐June) during 1979‐2018. Sea ice has decreased in the Bellingshausen Sea and increased in the Ross Sea, concurrently with a negative trend in the South Pacific Oscillation (SPO). SPO statistically explains 43% of the sea ice concentration trend averaged over PSSO. Convective activities over East Africa and the southwestern Indian Ocean, the Interdecadal Pacific Oscillation (IPO), and extratropical processes excite a wavetrain that propagates from the Indian Ocean to the Southern Ocean and South America. The wavetrain contributes to the decrease of the autumn SPO index, which influences sea ice changes over PSSO. During the negative phase of SPO, an anomalous surface anticyclonic wind field over high‐latitude South Pacific Ocean generates anomalous sea ice concentrations via heat advection and wind forcing on ice drift. This article is protected by copyright. All rights reserved. |
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/320916 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Lejiang Yu,Shiyuan Zhong,Timo Vihma,et al. Sea ice changes in the Pacific sector of the Southern Ocean in austral autumn closely associated with the negative polarity of the South Pacific Oscillation[J]. Geophysical Research Letters,2021. |
APA | Lejiang Yu,Shiyuan Zhong,Timo Vihma,Cuijuan Sui,&Bo Sun.(2021).Sea ice changes in the Pacific sector of the Southern Ocean in austral autumn closely associated with the negative polarity of the South Pacific Oscillation.Geophysical Research Letters. |
MLA | Lejiang Yu,et al."Sea ice changes in the Pacific sector of the Southern Ocean in austral autumn closely associated with the negative polarity of the South Pacific Oscillation".Geophysical Research Letters (2021). |
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