The regional patterns of the global dynamic and steric sea level variation in twenty-first century projections

doi:10.1016/j.gloplacha.2016.10.005

	The regional patterns of the global dynamic and steric sea level variation in twenty-first century projections
	Li, Juan 1,2; Tan, Wei 2; Chen, Meixiang 3; Zuo, Juncheng 3; Yang, Yiqiu 4
刊名	GLOBAL AND PLANETARY CHANGE
	2016-11
卷号	146 页码:133-139
关键词	Sea level RCP4.5 AMOC DSL SSL
ISSN号	0921-8181
DOI	10.1016/j.gloplacha.2016.10.005
英文摘要	This study discusses the regional sea-level variation associated with possible influence factors using Community Climate System Model version 4 (CCSM4) in the 21st century. Under the moderate emission scenario of the IPCC's Representative Concentration Pathway 4.5 (RCP4.5), the predicted sea-level variation is spatially non-uniform. The most remarkable variation of the dynamic sea level (DSL) is observed in three typical regions (North Pacific, Southern Ocean, and North Atlantic). In the North Pacific, the DSL rises significantly around Kuroshio and Kuroshio extension, while declines in the subpolar gyre. The DSL variation shows an out-of-phase relationship with the Sverdrup transport, indicating that the wind stress induced Sverdrup transport is generally responsible for the DSL variation. In the Southern Ocean, the DSL variation performs a belt-like pattern, it rises around 40 degrees S zonal band, while declines in its southern side, this is related to the enhancement of westerly wind stress. In the North Atlantic, the DSL variation acts as a dipole mode, it rises in the north of the North Atlantic Current (NAC), and declines in the south. This dipole pattern can be also interpreted by the Sverdrup transport except in the northeast of the NAC, where the DSL rise is more affected by the weakening of the Atlantic Meridional Overturning Circulation (AMOC). Compared with the DSL, the steric sea level (SSL) rises in most of the ocean, and the thermosteric sea level (TSL) is the major contributor. Only in the Southern Ocean, the SSL descends. The decreased SSL is affected by the halosteric sea level (HSL), which is mainly attributed to the weakly increased salinity from 300 m to the bottom. To some extent, the HSL also contributes to the SSL rise in the Pacific, this is caused by the seawater freshening and warming in the upper 1500 m. However, in the Atlantic, the HSL declines, thus partly offsets the rising effect of the TSL. These opposite variations are associated with the weakened AMOC (C) 2016 Elsevier B.V. All rights reserved.
资助项目	Program Sponsored for Innovation Research of Graduate Student in Jiangsu Province, China[CXZZ11_0422]
WOS关键词	RESOLUTION CLIMATE MODEL ; RISE ; VARIABILITY ; GREENLAND ; CIRCULATION ; FINGERPRINT ; RESPONSES ; DENSITY ; AOGCMS ; IMPACT
WOS研究方向	Physical Geography ; Geology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000388049700011
内容类型	期刊论文
源URL	[http://ir.fio.com.cn:8080/handle/2SI8HI0U/26672]
专题	自然资源部第一海洋研究所
通讯作者	Tan, Wei
作者单位	1.State Ocean Adm, South China Sea Marine Predict Ctr, Guangzhou, Guangdong, Peoples R China 2.State Ocean Adm, Inst Oceanog 1, 6 Xianxialing Rd, Qingdao 266061, Peoples R China 3.Hohai Univ, Coll Oceanog, Nanjing, Jiangsu, Peoples R China 4.Natl Marine Environm Forecasting Ctr, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Li, Juan,Tan, Wei,Chen, Meixiang,et al. The regional patterns of the global dynamic and steric sea level variation in twenty-first century projections[J]. GLOBAL AND PLANETARY CHANGE,2016,146:133-139.
APA	Li, Juan,Tan, Wei,Chen, Meixiang,Zuo, Juncheng,&Yang, Yiqiu.(2016).The regional patterns of the global dynamic and steric sea level variation in twenty-first century projections.GLOBAL AND PLANETARY CHANGE,146,133-139.
MLA	Li, Juan,et al."The regional patterns of the global dynamic and steric sea level variation in twenty-first century projections".GLOBAL AND PLANETARY CHANGE 146(2016):133-139.