Gulf of Mexico ocean dynamics and its modulation by air-sea interactions
At basin-scale, it has been recognized for several decades that interactions between the ocean and the atmosphere have a major influence on the Earth's climate. However, persistent biases in global models, for example in sea surface temperature, have highlighted the limitations of a global appr...
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Other Authors: | , , , , , , |
Format: | Doctoral or Postdoctoral Thesis |
Language: | English |
Published: |
HAL CCSD
2023
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Subjects: | |
Online Access: | https://theses.hal.science/tel-04297850 https://theses.hal.science/tel-04297850/document https://theses.hal.science/tel-04297850/file/2023TOU30080b.pdf |
Summary: | At basin-scale, it has been recognized for several decades that interactions between the ocean and the atmosphere have a major influence on the Earth's climate. However, persistent biases in global models, for example in sea surface temperature, have highlighted the limitations of a global approach at relatively low spatial resolution. This led to a new line of research based on a regional approach to ocean dynamics and ocean-atmosphere interactions. This thesis is part of this approach by focusing on the Gulf of Mexico (GoM). The (GoM) is part of the western boundary current system of the North Atlantic. It represents a complex system where human activities, such as oil extraction and fishing, interact extensively with the ocean environment and biogeochemical ecosystems. The dynamics of the GoM are dominated by the emblematic Loop Current (LC), an intense anticyclonic current that brings warm Caribbean waters into the GoM. The LC episodically sheds warm core an- ticyclonic eddies that propagate westward: the Loop Current Eddies (LCEs). However, the GoM is facing increasing environmental problems such as oil spills and plastics. Knowledge of ocean dynamics is of utmost importance for understanding and monitoring these environmental problems and improving economic activities, such as shipping, fishing, or the development and exploitation of offshore structures for energy extraction. À l'échelle des bassins océaniques, il est reconnu depuis plusieurs décennies que les interactions entre l'océan et l'atmosphère ont une grande influence sur le climat de la Terre. Cependant, les biais persistants des modèles globaux, par exemple en température de surface de la mer, ont mis en exergue les limites d'une approche globale à relativement basse résolution spatiale. Il en a ainsi découlé une nouvelle ligne de recherche basée sur une approche régionale de la dynamique océanique et des interactions entre l'océan et l'atmosphère. Cette thèse s'inscrit dans cette approche en se focalisant sur le Golfe du Mexique (GdM). Le GdM ... |
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