An evaluation of the simulations of the Arctic Intermediate Water in climate models and reanalyses

doi:10.1007/s13131-014-0567-6

IOCAS-IR > 海洋环流与波动重点实验室

	An evaluation of the simulations of the Arctic Intermediate Water in climate models and reanalyses
	Li Xiang 1,2; Su Jie 1; Zhao Jinping 1; Su, J (reprint author), Ocean Univ China, Key Lab Phys Oceanog, Qingdao 266100, Peoples R China.
	2014-12-01
发表期刊	ACTA OCEANOLOGICA SINICA
卷号	33 期号:12 页码:1-14
文章类型	Article
摘要	The simulations of the Arctic Intermediate Water in four datasets of climate models and reanalyses, CCSM3, CCSM4, SODA and GLORYS, are analyzed and evaluated. The climatological core temperatures and depths in both CCSM models exhibit deviations over 0.5A degrees C and 200 m from the PHC. SODA reanalysis reproduces relatively reasonable spatial patterns of core temperature and depth, while GLORYS, another reanalysis, shows a remarkable cooling and deepening drift compared with the result at the beginning of the dataset especially in the Eurasian Basin (about 2A degrees C). The heat contents at the depth of intermediate water in the CCSM models are overestimated with large positive errors nearly twice of that in the PHC. To the contrary, the GLORYS in 2009 show a negative error with a similar magnitude, which means the characteristic of the water mass is totally lost. The circulations in the two reanalyses at the depth of intermediate water are more energetic and realistic than those in the CCSMs, which is attributed to the horizontal eddy-permitting resolution. The velocity fields and the transports in the Fram Strait are also investigated. The necessity of finer horizontal resolution is concluded again. The northward volume transports are much larger in the two reanalyses, although they are still weak comparing with mooring observations. Finally, an investigation of the impact of assimilation is done with an evidence of the heat input from assimilation. It is thought to be a reason for the good performance in the SODA, while the GLORYS drifts dramatically without assimilation data in the Arctic Ocean.
关键词	Arctic Intermediate Water Model Evaluation Arctic Modeling Impact Of Data Assimilation
学科领域	Oceanography
DOI	10.1007/s13131-014-0567-6
收录类别	SCI
语种	英语
WOS记录号	WOS:000346071800001
引用统计	被引频次：4[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/337002/23909
专题	海洋环流与波动重点实验室
通讯作者	Su, J (reprint author), Ocean Univ China, Key Lab Phys Oceanog, Qingdao 266100, Peoples R China.
作者单位	1.Ocean Univ China, Key Lab Phys Oceanog, Qingdao 266100, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Key Lab Ocean Circulat & Wave, Qingdao 266071, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Li Xiang,Su Jie,Zhao Jinping,et al. An evaluation of the simulations of the Arctic Intermediate Water in climate models and reanalyses[J]. ACTA OCEANOLOGICA SINICA,2014,33(12):1-14.
APA	Li Xiang,Su Jie,Zhao Jinping,&Su, J .(2014).An evaluation of the simulations of the Arctic Intermediate Water in climate models and reanalyses.ACTA OCEANOLOGICA SINICA,33(12),1-14.
MLA	Li Xiang,et al."An evaluation of the simulations of the Arctic Intermediate Water in climate models and reanalyses".ACTA OCEANOLOGICA SINICA 33.12(2014):1-14.

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