Heat Content Anomaly and Decay of Warm‐core Rings: the Case of the Gulf of Mexico

Type Article
Date 2020-02
Language English
Author(s) Meunier Thomas1, Sheinbaum Julio1, Pallàs Sanz Enric1, Tenreiro Miguel1, Ochoa José1, Angulo Angel Ruiz2, Carton Xavier3, Marez Charly3
Affiliation(s) 1 : Ensenada Center for Scientific Research and Higher Education Ensenada B.C., Mexico
2 : Icelandic Meteorological Office Reykjavik, Iceland
3 : Laboratoire d'Océanographie Physique et Spatiale Plouzané, France
Source Geophysical Research Letters (0094-8276) (American Geophysical Union (AGU)), 2020-02 , Vol. 47 , N. 3 , P. e2019GL085600 (12p.)
DOI 10.1029/2019GL085600
WOS© Times Cited 17

In this study, we harness the 25‐year satellite‐altimeter record, in concert with a vast array of in‐situ measurements, to estimate the heat content anomaly of 32 warm‐core rings in the Gulf of Mexico (GoM). The decay rate of these mesoscale eddies is studied in detail, and it is shown that they release the majority of their heat as they drift in the central GoM (away from topographic obstacles). The surface heat fluxes from the eddies is shown to be small in comparison to the total rate of heat loss from the eddies, suggesting that heat is primarily released towards the surrounding watermasses. Integrating the total heat evolution equation over the warm‐core rings yields an estimate of their effective lateral diffusivity coefficient. The long term impact of warm‐core rings on heat and salt balance in the GoM is also discussed.

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Meunier Thomas, Sheinbaum Julio, Pallàs Sanz Enric, Tenreiro Miguel, Ochoa José, Angulo Angel Ruiz, Carton Xavier, Marez Charly (2020). Heat Content Anomaly and Decay of Warm‐core Rings: the Case of the Gulf of Mexico. Geophysical Research Letters, 47(3), e2019GL085600 (12p.). Publisher's official version : https://doi.org/10.1029/2019GL085600 , Open Access version : https://archimer.ifremer.fr/doc/00606/71769/