Characterization of moisture sources for austral seas and relationship with sea ice concentration
In this study, the moisture sources acting over each sea (Weddell, King Haakon VII, East Antarctic, Amundsen-Bellingshausen, and Ross-Amundsen) of the Southern Ocean during 1980–2015 are identified with the FLEXPART Lagrangian model and by using two approaches: backward and forward analyses. Backwar...
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Atmosphere
2019
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ftunivvigo:oai:www.investigo.biblioteca.uvigo.es:11093/2124 2023-05-15T14:13:59+02:00 Characterization of moisture sources for austral seas and relationship with sea ice concentration Reboita, Michelle Simões Nieto Muñiz, Raquel Olalla Rocha, Rosmeri Porfírio da Rodrigues De Moraes Drumond, Anita Vázquez Domínguez, Marta Gimeno Presa, Luis 2019-10-17 http://hdl.handle.net/11093/2124 https://doi.org/10.3390/atmos10100627 https://www.mdpi.com/2073-4433/10/10/627 eng eng Atmosphere Física aplicada EphysLab Atmosphere, 10(10): 627 (2019) 20734433 http://hdl.handle.net/11093/2124 doi:10.3390/atmos10100627 https://www.mdpi.com/2073-4433/10/10/627 Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ openAccess 25 Ciencias de la Tierra y del Espacio 2501 Ciencias de la Atmósfera 2501.06 Dinámica Atmosférica 2502 Climatología article 2019 ftunivvigo https://doi.org/10.3390/atmos10100627 2023-04-11T23:23:39Z In this study, the moisture sources acting over each sea (Weddell, King Haakon VII, East Antarctic, Amundsen-Bellingshausen, and Ross-Amundsen) of the Southern Ocean during 1980–2015 are identified with the FLEXPART Lagrangian model and by using two approaches: backward and forward analyses. Backward analysis provides the moisture sources (positive values of Evaporation minus Precipitation, E − P > 0), while forward analysis identifies the moisture sinks (E − P < 0). The most important moisture sources for the austral seas come from midlatitude storm tracks, reaching a maximum between austral winter and spring. The maximum in moisture sinks, in general, occurs in austral end-summer/autumn. There is a negative correlation (higher with 2-months lagged) between moisture sink and sea ice concentration (SIC), indicating that an increase in the moisture sink can be associated with the decrease in the SIC. This correlation is investigated by focusing on extremes (high and low) of the moisture sink over the Weddell Sea. Periods of high (low) moisture sinks show changes in the atmospheric circulation with a consequent positive (negative) temperature anomaly contributing to decreasing (increasing) the SIC over the Weddell Sea. This study also suggests possible relationships between the positive (negative) phase of the Southern Annular Mode with the increase (decrease) in the moisture that travels from the midlatitude sources to the Weddell Sea. Fundação de Amparo à Pesquisa do Estado de São Paulo | Ref. 2017/03981-3 Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brazil) | Ref. 304949/2018-3 Xunta de Galicia | Ref. ED481B 2018/062 Xunta de Galicia | Ref. Ref. ED413C 2017/64 European Commission Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean Weddell Sea University of Vigo: Investigo (Repositorio Institucional de la Universidade de Vigo) Antarctic Southern Ocean Weddell Sea Austral Weddell Atmosphere 10 10 627 |
institution |
Open Polar |
collection |
University of Vigo: Investigo (Repositorio Institucional de la Universidade de Vigo) |
op_collection_id |
ftunivvigo |
language |
English |
topic |
25 Ciencias de la Tierra y del Espacio 2501 Ciencias de la Atmósfera 2501.06 Dinámica Atmosférica 2502 Climatología |
spellingShingle |
25 Ciencias de la Tierra y del Espacio 2501 Ciencias de la Atmósfera 2501.06 Dinámica Atmosférica 2502 Climatología Reboita, Michelle Simões Nieto Muñiz, Raquel Olalla Rocha, Rosmeri Porfírio da Rodrigues De Moraes Drumond, Anita Vázquez Domínguez, Marta Gimeno Presa, Luis Characterization of moisture sources for austral seas and relationship with sea ice concentration |
topic_facet |
25 Ciencias de la Tierra y del Espacio 2501 Ciencias de la Atmósfera 2501.06 Dinámica Atmosférica 2502 Climatología |
description |
In this study, the moisture sources acting over each sea (Weddell, King Haakon VII, East Antarctic, Amundsen-Bellingshausen, and Ross-Amundsen) of the Southern Ocean during 1980–2015 are identified with the FLEXPART Lagrangian model and by using two approaches: backward and forward analyses. Backward analysis provides the moisture sources (positive values of Evaporation minus Precipitation, E − P > 0), while forward analysis identifies the moisture sinks (E − P < 0). The most important moisture sources for the austral seas come from midlatitude storm tracks, reaching a maximum between austral winter and spring. The maximum in moisture sinks, in general, occurs in austral end-summer/autumn. There is a negative correlation (higher with 2-months lagged) between moisture sink and sea ice concentration (SIC), indicating that an increase in the moisture sink can be associated with the decrease in the SIC. This correlation is investigated by focusing on extremes (high and low) of the moisture sink over the Weddell Sea. Periods of high (low) moisture sinks show changes in the atmospheric circulation with a consequent positive (negative) temperature anomaly contributing to decreasing (increasing) the SIC over the Weddell Sea. This study also suggests possible relationships between the positive (negative) phase of the Southern Annular Mode with the increase (decrease) in the moisture that travels from the midlatitude sources to the Weddell Sea. Fundação de Amparo à Pesquisa do Estado de São Paulo | Ref. 2017/03981-3 Conselho Nacional de Desenvolvimento Científico e Tecnológico (Brazil) | Ref. 304949/2018-3 Xunta de Galicia | Ref. ED481B 2018/062 Xunta de Galicia | Ref. Ref. ED413C 2017/64 European Commission |
format |
Article in Journal/Newspaper |
author |
Reboita, Michelle Simões Nieto Muñiz, Raquel Olalla Rocha, Rosmeri Porfírio da Rodrigues De Moraes Drumond, Anita Vázquez Domínguez, Marta Gimeno Presa, Luis |
author_facet |
Reboita, Michelle Simões Nieto Muñiz, Raquel Olalla Rocha, Rosmeri Porfírio da Rodrigues De Moraes Drumond, Anita Vázquez Domínguez, Marta Gimeno Presa, Luis |
author_sort |
Reboita, Michelle Simões |
title |
Characterization of moisture sources for austral seas and relationship with sea ice concentration |
title_short |
Characterization of moisture sources for austral seas and relationship with sea ice concentration |
title_full |
Characterization of moisture sources for austral seas and relationship with sea ice concentration |
title_fullStr |
Characterization of moisture sources for austral seas and relationship with sea ice concentration |
title_full_unstemmed |
Characterization of moisture sources for austral seas and relationship with sea ice concentration |
title_sort |
characterization of moisture sources for austral seas and relationship with sea ice concentration |
publisher |
Atmosphere |
publishDate |
2019 |
url |
http://hdl.handle.net/11093/2124 https://doi.org/10.3390/atmos10100627 https://www.mdpi.com/2073-4433/10/10/627 |
geographic |
Antarctic Southern Ocean Weddell Sea Austral Weddell |
geographic_facet |
Antarctic Southern Ocean Weddell Sea Austral Weddell |
genre |
Antarc* Antarctic Sea ice Southern Ocean Weddell Sea |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean Weddell Sea |
op_relation |
Atmosphere, 10(10): 627 (2019) 20734433 http://hdl.handle.net/11093/2124 doi:10.3390/atmos10100627 https://www.mdpi.com/2073-4433/10/10/627 |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ openAccess |
op_doi |
https://doi.org/10.3390/atmos10100627 |
container_title |
Atmosphere |
container_volume |
10 |
container_issue |
10 |
container_start_page |
627 |
_version_ |
1766286495709134848 |