Seasonal variability of zonal heat advection in the mixed layer of the tropical Pacific

doi:10.1007/s00343-014-3019-4

IOCAS-IR > 海洋环流与波动重点实验室

	Seasonal variability of zonal heat advection in the mixed layer of the tropical Pacific
	Guan Cong1,2,3 ; Chen Yongli 1,2; Wang Fan1,2 ; Chen, YL
	2013-11-01
发表期刊	CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
ISSN	0254-4059
卷号	31 期号:6 页码:1344-1355
文章类型	Article
摘要	Zonal heat advection (ZHA) plays an important role in the variability of the thermal structure in the tropical Pacific Ocean, especially in the western Pacific warm pool (WPWP). Using the Simple Ocean Data Assimilation (SODA) Version 2.02/4 for the period 1958-2007, this paper presents a detailed analysis of the climatological and seasonal ZHA in the tropical Pacific Ocean. Climatologically, ZHA shows a zonal-band spatial pattern associated with equatorial currents and contributes to forming the irregular eastern boundary of the WPWP (EBWP). Seasonal variation of ZHA with a positive peak from February to July is most prominent in the Nino3.4 region, where the EBWP is located. The physical mechanism of the seasonal cycle in this region is examined. The mean advection of anomalous temperature, anomalous advection of mean temperature and eddy advection account for 31%, 51%, and 18% of the total seasonal variations, respectively. This suggests that seasonal changes of the South Equatorial Current induced by variability of the trade winds are the dominant contributor to the anomalous advection of mean temperature and hence, the seasonality of ZHA. Heat budget analysis shows that ZHA and surface heat flux make comparable contributions to the seasonal heat variation in the Nino3.4 region, and that ZHA cools the upper ocean throughout the calendar year except in late boreal spring. The connection between ZHA and EBWP is further explored and a statistical relationship between EBWP, ZHA and surface heat flux is established based on least squares fitting.; Zonal heat advection (ZHA) plays an important role in the variability of the thermal structure in the tropical Pacific Ocean, especially in the western Pacific warm pool (WPWP). Using the Simple Ocean Data Assimilation (SODA) Version 2.02/4 for the period 1958-2007, this paper presents a detailed analysis of the climatological and seasonal ZHA in the tropical Pacific Ocean. Climatologically, ZHA shows a zonal-band spatial pattern associated with equatorial currents and contributes to forming the irregular eastern boundary of the WPWP (EBWP). Seasonal variation of ZHA with a positive peak from February to July is most prominent in the Nino3.4 region, where the EBWP is located. The physical mechanism of the seasonal cycle in this region is examined. The mean advection of anomalous temperature, anomalous advection of mean temperature and eddy advection account for 31%, 51%, and 18% of the total seasonal variations, respectively. This suggests that seasonal changes of the South Equatorial Current induced by variability of the trade winds are the dominant contributor to the anomalous advection of mean temperature and hence, the seasonality of ZHA. Heat budget analysis shows that ZHA and surface heat flux make comparable contributions to the seasonal heat variation in the Nino3.4 region, and that ZHA cools the upper ocean throughout the calendar year except in late boreal spring. The connection between ZHA and EBWP is further explored and a statistical relationship between EBWP, ZHA and surface heat flux is established based on least squares fitting.
关键词	Zonal Heat Advection Seasonality Tropical Pacific Ocean Warm Pool Ocean Circulation
学科领域	Marine & Freshwater Biology ; Oceanography
DOI	10.1007/s00343-014-3019-4
URL	查看原文
收录类别	SCI
语种	英语
WOS研究方向	Marine & Freshwater Biology ; Oceanography
WOS类目	Limnology ; Oceanography
WOS记录号	WOS:000326628800022
WOS关键词	SEA-SURFACE TEMPERATURE ; DATA ASSIMILATION ANALYSIS ; UPPER OCEAN 1950-95 ; EQUATORIAL PACIFIC ; WARM POOL ; ANNUAL CYCLE ; EL-NINO ; ROSSBY WAVES ; PART I ; DISPLACEMENTS
WOS标题词	Science & Technology ; Life Sciences & Biomedicine ; Physical Sciences
引用统计	被引频次：7[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/337002/16434
专题	海洋环流与波动重点实验室
通讯作者	Chen, YL
作者单位	1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
第一作者单位	中国科学院海洋研究所; 海洋环流与波动重点实验室
推荐引用方式 GB/T 7714	Guan Cong,Chen Yongli,Wang Fan,et al. Seasonal variability of zonal heat advection in the mixed layer of the tropical Pacific[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2013,31(6):1344-1355.
APA	Guan Cong,Chen Yongli,Wang Fan,&Chen, YL.(2013).Seasonal variability of zonal heat advection in the mixed layer of the tropical Pacific.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,31(6),1344-1355.
MLA	Guan Cong,et al."Seasonal variability of zonal heat advection in the mixed layer of the tropical Pacific".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 31.6(2013):1344-1355.

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