Winter thermohaline evolution along and below the Ross Ice Shelf

The Ross Ice Shelf floats above the southern sector of the Ross Sea and creates a cavity where critical ocean-ice interactions take place. Crucial processes occurring in this cavity include the formation of Ice Shelf Water, the coldest ocean water, and the intrusion of Antarctic Surface Water, the m...

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Veröffentlicht in:Nature communications 2024-12, Vol.15 (1), p.10581-10, Article 10581
Hauptverfasser: Falco, Pierpaolo, Krauzig, Naomi, Castagno, Pasquale, Garzia, Angela, Martellucci, Riccardo, Cotroneo, Yuri, Flocco, Daniela, Menna, Milena, Pirro, Annunziata, Mauri, Elena, Memmola, Francesco, Solidoro, Cosimo, Pacciaroni, Massimo, Notarstefano, Giulio, Budillon, Giorgio, Zambianchi, Enrico
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container_issue 1
container_start_page 10581
container_title Nature communications
container_volume 15
creator Falco, Pierpaolo
Krauzig, Naomi
Castagno, Pasquale
Garzia, Angela
Martellucci, Riccardo
Cotroneo, Yuri
Flocco, Daniela
Menna, Milena
Pirro, Annunziata
Mauri, Elena
Memmola, Francesco
Solidoro, Cosimo
Pacciaroni, Massimo
Notarstefano, Giulio
Budillon, Giorgio
Zambianchi, Enrico
description The Ross Ice Shelf floats above the southern sector of the Ross Sea and creates a cavity where critical ocean-ice interactions take place. Crucial processes occurring in this cavity include the formation of Ice Shelf Water, the coldest ocean water, and the intrusion of Antarctic Surface Water, the main driver of frontal and basal melting. During the winter, a polynya forms along the Ross Ice Shelf edge, producing a precursor to Antarctic Bottom Water known as High Salinity Shelf Water. Due to the difficulty of direct exploration of the Ross Ice Shelf in the winter, processes occurring there have been only hypothesized to date. Here we show thermohaline observations collected along the Ross Ice Shelf front from 2020 to 2023 using unconventionally programmed Argo floats. These measurements provide year-round observations of water column changes in and around the Ross Ice Shelf cavity, allowing to quantify production of High Salinity Shelf Water, ocean heat content and basal melt rates. This study presents thermohaline observations collected along the Ross Ice Shelf front from 2020 to 2023 using unconventionally programmed Argo floats that provide year-round observations of water column changes close to the Ross Ice Shelf cavity.
doi_str_mv 10.1038/s41467-024-54751-8
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subjects 704/106/694
704/829/2737
Bottom water
Enthalpy
Floats
Humanities and Social Sciences
Ice formation
Ice shelves
Land ice
multidisciplinary
Polynyas
Salinity
Salinity effects
Science
Science (multidisciplinary)
Seawater
Surface water
Water circulation
Water column
Winter
title Winter thermohaline evolution along and below the Ross Ice Shelf
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