期刊
GEOPHYSICAL RESEARCH LETTERS
卷 48, 期 4, 页码 -出版社
AMER GEOPHYSICAL UNION
DOI: 10.1029/2020GL091277
关键词
freshwater; gulf of Mexico; long‐ distance connection; loop current; mesoscale eddies; satellite measurements
资金
- Gulf of Mexico Research Initiative [G-231804]
- Alfred P. Sloan Foundation [FG-2019-12,536]
- Gulf Research Program of the National Academies of Sciences, Engineering, and Medicine (NASEM) UGOS-1 [2000009918]
- NOAA IOOS [NA16NOS0120028]
This study reveals that mesoscale eddies from the western tropical Atlantic Ocean can influence the Loop Current system in the Gulf of Mexico, and freshwater from the Amazon and Orinoco Rivers may enter the Gulf of Mexico through these eddies, potentially impacting the stratification of the Gulf of Mexico.
Numerical circulation modeling and observational studies have been conducted to understand the Loop Current (LC) system behaviors in the Gulf of Mexico (GoM). One of the factors that may influence the LC are upstream eddies from within the Caribbean Sea. By combining satellite altimetry, sea surface salinity and ocean color data, we demonstrate that mesoscale eddies from the western tropical Atlantic Ocean can eventually make their way to the Gulf of Mexico and likely affect the LC. In addition, our study shows that freshwater of Amazon and Orinoco River origin trapped within mesoscale eddies can also enter the GoM, potentially affecting the GoM stratification. This study provides insights into understanding variations of the LC system and showcases the roles of mesoscale eddies in connecting the open ocean and regional seas.
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