气候变化领域集成服务门户(CCPortal): Eddy Surface Characteristics and Vertical Structure in the Gulf of Mexico from Satellite Observations and Model Simulations

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DOI	10.1029/2019JC015538
	Eddy Surface Characteristics and Vertical Structure in the Gulf of Mexico from Satellite Observations and Model Simulations
	Brokaw R.J.; Subrahmanyam B.; Trott C.B.; Chaigneau A.
发表日期	2020
ISSN	21699275
卷号	125 期号:2
英文摘要	The Gulf of Mexico exhibits strong circulation due to the Loop Current System, along with high mesoscale eddy activity. In order to investigate eddy characteristics, we apply an automatic eddy-tracking algorithm to absolute dynamic topography maps and analyze the spatial distribution and evolution of eddy attributes including amplitude, radius, and eddy kinetic energy. The Loop Current region in the eastern Gulf of Mexico is an area of robust eddy generation for both cyclonic and anticyclonic eddies. Anticyclonic eddies were generally characterized by smaller amplitudes and larger radii when compared to their cyclonic counterparts. We also examine eddy surface properties including temperature and salinity anomalies as well as chlorophyll-a concentration and observe how these properties vary between the eastern and western Gulf of Mexico. Persistent features such as the Loop Current System and coastal low-salinity, highly biologically productive waters dominate eddy properties in the eastern side of the basin. We also apply the eddy-tracking algorithm to a regional Hybrid Coordinate Ocean Model validated using Argo floats. We find that this model accurately reflects surface characteristics in the mesoscale eddy field as well as the mean vertical eddy structure and use it to extend our analysis of eddy properties with depth. We find that subsurface characteristics of density, salinity, temperature, and velocities vary greatly between eddies in the eastern and western Gulf of Mexico. Through composite analysis of both surface and subsurface eddy properties, we gain a more complete picture of the mechanisms behind the observable characteristics of these eddies. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	chlorophyll; eddies; Gulf of Mexico; HYCOM; salinity; SST
语种	英语
来源期刊	Journal of Geophysical Research: Oceans
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/186966
作者单位	School of the Earth, Ocean and Environment, University of South Carolina, Columbia, SC, United States; School of Ocean Science and Engineering, University of Southern Mississippi, Stennis Space Center, Hattiesburg, MS, United States; LEGOS, University of Toulouse, CNES, CNRS, IRD, UPS, Toulouse, France; Institut de Recherches Halieutiques et Océanologiques du Bénin (IRHOB), Cotonou, Benin; International Chair in Mathematical Physics and Applications (ICMPA–UNESCO Chair), University of Abomey-Calavi, Cotonou, Benin
推荐引用方式 GB/T 7714	Brokaw R.J.,Subrahmanyam B.,Trott C.B.,et al. Eddy Surface Characteristics and Vertical Structure in the Gulf of Mexico from Satellite Observations and Model Simulations[J],2020,125(2).
APA	Brokaw R.J.,Subrahmanyam B.,Trott C.B.,&Chaigneau A..(2020).Eddy Surface Characteristics and Vertical Structure in the Gulf of Mexico from Satellite Observations and Model Simulations.Journal of Geophysical Research: Oceans,125(2).
MLA	Brokaw R.J.,et al."Eddy Surface Characteristics and Vertical Structure in the Gulf of Mexico from Satellite Observations and Model Simulations".Journal of Geophysical Research: Oceans 125.2(2020).