Rapid Sea Level Rise in the Southern Hemisphere Subtropical Oceans

doi:10.1175/JCLI-D-21-0248.1

IOCAS-IR > 海洋环流与波动重点实验室

	Rapid Sea Level Rise in the Southern Hemisphere Subtropical Oceans
	Duan, Jing 1,2,3; Li, Yuanlong 1,2,3; Wang, Fan1,2,3 ; Hu, Aixue 4; Han, Weiqing 5; Zhang, Lei 5; Lin, Pengfei 6; Rosenbloom, Nan 4; Meehl, Gerald A.4
	2021-12-01
发表期刊	JOURNAL OF CLIMATE
ISSN	0894-8755
卷号	34 期号:23 页码:9401-9423
通讯作者	Li, Yuanlong([email protected])
摘要	The subtropical oceans between 35 degrees and 20 degrees S in the Southern Hemisphere (SH) have exhibited prevailingly rapid sea level rise (SLR) rates since the mid-twentieth century, amplifying damages of coastal hazards and exerting increasing threats to South America, Africa, and Australia. Yet, mechanisms of the observed SLR have not been firmly established, and its representation in climate models has not been examined. By analyzing observational sea level estimates, ocean reanalysis products, and ocean model hindcasts, we show that the steric SLR of the SH subtropical oceans between 35 degrees and 20 degrees S is faster than the global mean rate by 18.2% +/- 9.9% during 1958-2014. However, present climate models-the fundamental bases for future climate projections-generally fail to reproduce this feature. Further analysis suggests that the rapid SLR in the SH subtropical oceans is primarily attributable to the persistent upward trend of the southern annular mode (SAM). Physically, this trend in SAM leads to the strengthening of the SH subtropical highs, with the strongest signatures observed in the southern Indian Ocean. These changes in atmospheric circulation promote regional SLR in the SH subtropics by driving upper-ocean convergence. Climate models show systematic biases in the simulated structure and trend magnitude of SAM and significantly underestimate the enhancement of subtropical highs. These biases lead to the inability of models to correctly simulate the observed subtropical SLR. This work highlights the paramount necessity of reducing model biases to provide reliable regional sea level projections.
关键词	Ocean Indian Ocean Dynamics Sea level
DOI	10.1175/JCLI-D-21-0248.1
收录类别	SCI
语种	英语
资助项目	National Key R&D Program of China[2019YFA0606702]; Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000]; Strategic Priority Research Program of Chinese Academy of Sciences[40000000]; Shandong Provincial Natural Science Foundation[ZR2020JQ17]; Key Deployment Project of CAS Centre for Ocean Mega-Science[COMS2019Q07]; Regional and Global Model Analysis (RGMA) component of the Earth and Environmental System Modeling Program of the U.S. Department of Energy's Office of Biological and Environmental Research (BER) via National Science Foundation[IA 1947282]; National Center for Atmospheric Research (NCAR) - NSF[1852977]; NSF[AGS 1935279]
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000752649500012
出版者	AMER METEOROLOGICAL SOC
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/177985
专题	海洋环流与波动重点实验室
通讯作者	Li, Yuanlong
作者单位	1.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Ocean Circulat & Waves, Qingdao, Peoples R China 2.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Funct Lab Ocean Dynam & Climate, Qingdao, Peoples R China 4.Natl Ctr Atmospher Res, Climate & Global Dynam Lab, POB 3000, Boulder, CO 80307 USA 5.Univ Colorado, Dept Atmospher & Ocean Sci, Boulder, CO 80309 USA 6.Chinese Acad Sci, Inst Atmospher Phys, LASG, Beijing, Peoples R China
第一作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Duan, Jing,Li, Yuanlong,Wang, Fan,et al. Rapid Sea Level Rise in the Southern Hemisphere Subtropical Oceans[J]. JOURNAL OF CLIMATE,2021,34(23):9401-9423.
APA	Duan, Jing.,Li, Yuanlong.,Wang, Fan.,Hu, Aixue.,Han, Weiqing.,...&Meehl, Gerald A..(2021).Rapid Sea Level Rise in the Southern Hemisphere Subtropical Oceans.JOURNAL OF CLIMATE,34(23),9401-9423.
MLA	Duan, Jing,et al."Rapid Sea Level Rise in the Southern Hemisphere Subtropical Oceans".JOURNAL OF CLIMATE 34.23(2021):9401-9423.

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