A numerical study of the circulation and monthly-to-seasonal variability in the Caribbean Sea: the role of Caribbean eddies |
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| Authors: | Yuehua Lin Jinyu Sheng Richard J Greatbatch |
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| Institution: | (1) Department of Oceanography, Dalhousie University, Halifax, NS, B3H 4J1, Canada;(2) ASL Environmental Sciences, Victoria, BC, V8M 1Z5, Canada;(3) Leibniz Institut f?r Meereswissenshaften an der Universit?t Kiel, Kiel, Germany |
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| Abstract: | This study examines the circulation and associated monthly-to-seasonal variability in the Caribbean Sea using a regional ocean
circulation model. The model domain covers the region between 99.0 and 54.0°W and between 8.0 and 30.3°N, with a horizontal
resolution of 1/6°. The ocean circulation model is driven by 6-hourly atmospheric reanalysis data from the National Center
for Environmental Prediction and boundary forcing extracted from 5-day global ocean reanalysis data produced by Smith et al.
(Mercator Newsletter 36:39–49, 2010), and integrated for 7 years. A comparison of model results with observations demonstrates that the regional ocean circulation
model has skill in simulating circulation and associated variability in the study region. Analysis of the model results, as
well as a companion model run that uses steady annual mean forcing, illustrates the role of Caribbean eddies for driving monthly-to-seasonal
circulation variability in the model. It is found that vertically integrated transport between Nicaragua and Jamaica is influenced
by the interaction between the density perturbations associated with Caribbean eddies and the Nicaraguan Ridge. The impact
of Caribbean eddies squeezing through the Yucatan Channel is also discussed. |
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