Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica
The exchanges between the ocean, cryosphere, and atmosphere in the Southern Ocean play a pivotal role in the Earth’s Climate by driving the storage and redistribution of heat, freshwater, and CO2. However, our understanding of the processes at play is limited due to the scarcity of in-situ observa...
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ftunistlouisbrus:oai:dial.uclouvain.be:boreal:254421 2024-05-12T07:54:54+00:00 Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica Huot, Pierre Vincent UCL - SST/ELI/ELIC - Earth & Climate UCL - Faculté des Sciences Goose, Hugues Fichefet, Thierry Massonnet, François Jourdain, Nicolas De Keersmaecker, Marie-Laurence Fettweis, Xavier Lique, Camille 2021 http://hdl.handle.net/2078.1/254421 eng eng boreal:254421 http://hdl.handle.net/2078.1/254421 info:eu-repo/semantics/openAccess Antarctic Sea ice Ocean Atmosphere Climate model Adélie Land Small-scale High resolution info:eu-repo/semantics/doctoralThesis 2021 ftunistlouisbrus 2024-04-18T17:14:47Z The exchanges between the ocean, cryosphere, and atmosphere in the Southern Ocean play a pivotal role in the Earth’s Climate by driving the storage and redistribution of heat, freshwater, and CO2. However, our understanding of the processes at play is limited due to the scarcity of in-situ observations. Besides, climate models disagree on the future of Antarctica and appear to misrepresent the current trends. Is there something we are missing? Small-scale processes might be an answer. These processes, which take place at scales smaller than 100 km, are particularly hard to observe and cannot be explicitly resolved by most climate models. In this thesis, we explore their role in the interactions between the ocean, cryosphere, and atmosphere using high-resolution numerical models. The focus is given to the Adélie Land sector, one of the few birthplaces of the Antarctic Bottom Water which fills the depths of the World Ocean. The influences of ocean-ice shelf interactions, ocean tides, small-scale katabatic winds, and mesoscale eddies in ocean-cryosphere-atmosphere interactions are investigated. We show that, despite their small spatial scales, these processes have non-negligible effects on sea ice production and transport, water masses transformations, and on the exchanges of heat, freshwater, and momentum between the ocean, cryosphere, and atmosphere. Our results suggest that these processes could have important implications for the dynamics of the Antarctic climate and the way it will respond to the anthropogenic forcing. This thesis improves our understanding of rarely observed processes and stresses the need to incorporate them in climate models. (SC - Sciences) -- UCL, 2021 Doctoral or Postdoctoral Thesis Antarc* Antarctic Antarctica East Antarctica Ice Shelf Sea ice Southern Ocean DIAL@USL-B (Université Saint-Louis, Bruxelles) Antarctic East Antarctica Southern Ocean The Antarctic |
institution |
Open Polar |
collection |
DIAL@USL-B (Université Saint-Louis, Bruxelles) |
op_collection_id |
ftunistlouisbrus |
language |
English |
topic |
Antarctic Sea ice Ocean Atmosphere Climate model Adélie Land Small-scale High resolution |
spellingShingle |
Antarctic Sea ice Ocean Atmosphere Climate model Adélie Land Small-scale High resolution Huot, Pierre Vincent Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica |
topic_facet |
Antarctic Sea ice Ocean Atmosphere Climate model Adélie Land Small-scale High resolution |
description |
The exchanges between the ocean, cryosphere, and atmosphere in the Southern Ocean play a pivotal role in the Earth’s Climate by driving the storage and redistribution of heat, freshwater, and CO2. However, our understanding of the processes at play is limited due to the scarcity of in-situ observations. Besides, climate models disagree on the future of Antarctica and appear to misrepresent the current trends. Is there something we are missing? Small-scale processes might be an answer. These processes, which take place at scales smaller than 100 km, are particularly hard to observe and cannot be explicitly resolved by most climate models. In this thesis, we explore their role in the interactions between the ocean, cryosphere, and atmosphere using high-resolution numerical models. The focus is given to the Adélie Land sector, one of the few birthplaces of the Antarctic Bottom Water which fills the depths of the World Ocean. The influences of ocean-ice shelf interactions, ocean tides, small-scale katabatic winds, and mesoscale eddies in ocean-cryosphere-atmosphere interactions are investigated. We show that, despite their small spatial scales, these processes have non-negligible effects on sea ice production and transport, water masses transformations, and on the exchanges of heat, freshwater, and momentum between the ocean, cryosphere, and atmosphere. Our results suggest that these processes could have important implications for the dynamics of the Antarctic climate and the way it will respond to the anthropogenic forcing. This thesis improves our understanding of rarely observed processes and stresses the need to incorporate them in climate models. (SC - Sciences) -- UCL, 2021 |
author2 |
UCL - SST/ELI/ELIC - Earth & Climate UCL - Faculté des Sciences Goose, Hugues Fichefet, Thierry Massonnet, François Jourdain, Nicolas De Keersmaecker, Marie-Laurence Fettweis, Xavier Lique, Camille |
format |
Doctoral or Postdoctoral Thesis |
author |
Huot, Pierre Vincent |
author_facet |
Huot, Pierre Vincent |
author_sort |
Huot, Pierre Vincent |
title |
Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica |
title_short |
Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica |
title_full |
Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica |
title_fullStr |
Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica |
title_full_unstemmed |
Influence of small-scale processes on ocean-cryosphere-atmosphere interactions off Adélie Land, East Antarctica |
title_sort |
influence of small-scale processes on ocean-cryosphere-atmosphere interactions off adã©lie land, east antarctica |
publishDate |
2021 |
url |
http://hdl.handle.net/2078.1/254421 |
geographic |
Antarctic East Antarctica Southern Ocean The Antarctic |
geographic_facet |
Antarctic East Antarctica Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica Ice Shelf Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica Ice Shelf Sea ice Southern Ocean |
op_relation |
boreal:254421 http://hdl.handle.net/2078.1/254421 |
op_rights |
info:eu-repo/semantics/openAccess |
_version_ |
1798853358889467904 |