Recent Shift in the Warming of the Southern Oceans Modulated by Decadal Climate Variability
Recent Shift in the Warming of the Southern Oceans Modulated by Decadal Climate Variability
复制标题
十年间气候变化调节南大洋变暖的近期变化
DOI：
10.1029/2020gl090889
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发表时间：
2021
影响因子：
5.2
通讯作者：
Xiao-Hai Yan
中科院分区：
文献类型：
--
作者：
Wang Lina;Lyu Kewei;Zhuang Wei;Zhang Weiwei;Makarim Salvienty;Xiao-Hai Yan
据报告，在长达十年的全球表面变暖减缓(2003-2012年)和ARGO记录的早期(2006-2013年)期间，南半球海洋经历了迅速变暖。在这项研究中，我们分析了最新的观测结果，表明这种快速变暖的速度已经放缓，导致南半球海洋对全球海洋热存储的贡献减少(2006年至2019年可用ARGO期间的∼为65%)。东南印度洋和南太平洋这两个变暖热点地区在2013-2019年经历了降温。这种年代际变化与南环流和年代际太平洋涛动的变化有关。在早期变暖(后来变冷)期间，由变化的风强迫的等同日加深(浅化)主导了区域海洋温度的变化。我们的发现证明了十年变率是如何调节长期气候变化的，并为正在进行的十年预测系统的校准提供了重要的观测信息。
It has been reported that the Southern Hemisphere oceans experienced rapid warming during the decade‐long global surface warming slowdown (2003–2012) and the earlier period of the Argo record (2006–2013). In this study, we analyze updated observations to show that this rapid warming has slowed down, leading to less contribution of the Southern Hemisphere oceans to the global ocean heat storage (∼65% over the available Argo period 2006–2019). Two warming hotspot regions, the southeast Indian Ocean and South Pacific Ocean, have experienced cooling over 2013–2019. This decadal shift is related to variations in the Southern Annular Mode and Interdecadal Pacific Oscillation. The isopycnal deepening (shoaling) forced by changing winds dominated the regional ocean temperature changes over the earlier warming (later cooling) period. Our finding demonstrates how decadal variability modulates long‐term climate change and provides important observational information for the ongoing calibration of decadal prediction systems.