Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea
Understanding the oceanic response to tropical cyclones (TCs) is of importance for studies on climate change. Although the oceanic effects induced by individual TCs have been extensively investigated, studies on the oceanic response to the passage of consecutive TCs are rare. In this work, we assess...
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ftunivgent:oai:archive.ugent.be:8697336 2023-06-11T04:03:47+02:00 Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea Avila Alonso, Dailé Baetens, Jan Cardenas, Rolando De Baets, Bernard 2021 application/pdf https://biblio.ugent.be/publication/8697336 http://hdl.handle.net/1854/LU-8697336 https://doi.org/10.5194/nhess-21-837-2021 https://biblio.ugent.be/publication/8697336/file/8697337 eng eng https://biblio.ugent.be/publication/8697336 http://hdl.handle.net/1854/LU-8697336 http://dx.doi.org/10.5194/nhess-21-837-2021 https://biblio.ugent.be/publication/8697336/file/8697337 Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess NATURAL HAZARDS AND EARTH SYSTEM SCIENCES ISSN: 1561-8633 ISSN: 1684-9981 Earth and Environmental Sciences DEEP CHLOROPHYLL MAXIMUM EEL ANGUILLA-ANGUILLA TROPICAL CYCLONES SURFACE TEMPERATURE HEAT-CONTENT PHYTOPLANKTON BIOMASS CLIMATE-CHANGE TIME-SERIES GULF-STREAM IMPACT journalArticle info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2021 ftunivgent https://doi.org/10.5194/nhess-21-837-2021 2023-05-10T22:50:45Z Understanding the oceanic response to tropical cyclones (TCs) is of importance for studies on climate change. Although the oceanic effects induced by individual TCs have been extensively investigated, studies on the oceanic response to the passage of consecutive TCs are rare. In this work, we assess the upper-oceanic response to the passage of Hurricanes Dorian and Humberto over the western Sargasso Sea in 2019 using satellite remote sensing and modelled data. We found that the combined effects of these slow-moving TCs led to an increased oceanic response during the third and fourth post-storm weeks of Dorian (accounting for both Dorian and Humberto effects) because of the induced mixing and upwelling at this time. Overall, anomalies of sea surface temperature, ocean heat content, and mean temperature from the sea surface to a depth of 100 m were 50 %, 63 %, and 57 % smaller (more negative) in the third-fourth post-storm weeks than in the first-second post-storm weeks of Dorian (accounting only for Dorian effects), respectively. For the biological response, we found that surface chlorophyll a (chl a) concentration anomalies, the mean chl a concentration in the euphotic zone, and the chl a concentration in the deep chlorophyll maximum were 16 %, 4 %, and 16 % higher in the third-fourth post-storm weeks than in the first-second post-storm weeks, respectively. The sea surface cooling and increased biological response induced by these TCs were significantly higher (Mann-Whitney test, p < 0.05) compared to climatological records. Our climatological analysis reveals that the strongest TC-induced oceanographic variability in the western Sargasso Sea can be associated with the occurrence of consecutive TCs and long-lasting TC forcing. Article in Journal/Newspaper Anguilla anguilla Ghent University Academic Bibliography Dorian ENVELOPE(-63.497,-63.497,-64.815,-64.815) Natural Hazards and Earth System Sciences 21 2 837 859 |
institution |
Open Polar |
collection |
Ghent University Academic Bibliography |
op_collection_id |
ftunivgent |
language |
English |
topic |
Earth and Environmental Sciences DEEP CHLOROPHYLL MAXIMUM EEL ANGUILLA-ANGUILLA TROPICAL CYCLONES SURFACE TEMPERATURE HEAT-CONTENT PHYTOPLANKTON BIOMASS CLIMATE-CHANGE TIME-SERIES GULF-STREAM IMPACT |
spellingShingle |
Earth and Environmental Sciences DEEP CHLOROPHYLL MAXIMUM EEL ANGUILLA-ANGUILLA TROPICAL CYCLONES SURFACE TEMPERATURE HEAT-CONTENT PHYTOPLANKTON BIOMASS CLIMATE-CHANGE TIME-SERIES GULF-STREAM IMPACT Avila Alonso, Dailé Baetens, Jan Cardenas, Rolando De Baets, Bernard Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea |
topic_facet |
Earth and Environmental Sciences DEEP CHLOROPHYLL MAXIMUM EEL ANGUILLA-ANGUILLA TROPICAL CYCLONES SURFACE TEMPERATURE HEAT-CONTENT PHYTOPLANKTON BIOMASS CLIMATE-CHANGE TIME-SERIES GULF-STREAM IMPACT |
description |
Understanding the oceanic response to tropical cyclones (TCs) is of importance for studies on climate change. Although the oceanic effects induced by individual TCs have been extensively investigated, studies on the oceanic response to the passage of consecutive TCs are rare. In this work, we assess the upper-oceanic response to the passage of Hurricanes Dorian and Humberto over the western Sargasso Sea in 2019 using satellite remote sensing and modelled data. We found that the combined effects of these slow-moving TCs led to an increased oceanic response during the third and fourth post-storm weeks of Dorian (accounting for both Dorian and Humberto effects) because of the induced mixing and upwelling at this time. Overall, anomalies of sea surface temperature, ocean heat content, and mean temperature from the sea surface to a depth of 100 m were 50 %, 63 %, and 57 % smaller (more negative) in the third-fourth post-storm weeks than in the first-second post-storm weeks of Dorian (accounting only for Dorian effects), respectively. For the biological response, we found that surface chlorophyll a (chl a) concentration anomalies, the mean chl a concentration in the euphotic zone, and the chl a concentration in the deep chlorophyll maximum were 16 %, 4 %, and 16 % higher in the third-fourth post-storm weeks than in the first-second post-storm weeks, respectively. The sea surface cooling and increased biological response induced by these TCs were significantly higher (Mann-Whitney test, p < 0.05) compared to climatological records. Our climatological analysis reveals that the strongest TC-induced oceanographic variability in the western Sargasso Sea can be associated with the occurrence of consecutive TCs and long-lasting TC forcing. |
format |
Article in Journal/Newspaper |
author |
Avila Alonso, Dailé Baetens, Jan Cardenas, Rolando De Baets, Bernard |
author_facet |
Avila Alonso, Dailé Baetens, Jan Cardenas, Rolando De Baets, Bernard |
author_sort |
Avila Alonso, Dailé |
title |
Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea |
title_short |
Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea |
title_full |
Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea |
title_fullStr |
Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea |
title_full_unstemmed |
Oceanic response to the consecutive Hurricanes Dorian and Humberto (2019) in the Sargasso Sea |
title_sort |
oceanic response to the consecutive hurricanes dorian and humberto (2019) in the sargasso sea |
publishDate |
2021 |
url |
https://biblio.ugent.be/publication/8697336 http://hdl.handle.net/1854/LU-8697336 https://doi.org/10.5194/nhess-21-837-2021 https://biblio.ugent.be/publication/8697336/file/8697337 |
long_lat |
ENVELOPE(-63.497,-63.497,-64.815,-64.815) |
geographic |
Dorian |
geographic_facet |
Dorian |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES ISSN: 1561-8633 ISSN: 1684-9981 |
op_relation |
https://biblio.ugent.be/publication/8697336 http://hdl.handle.net/1854/LU-8697336 http://dx.doi.org/10.5194/nhess-21-837-2021 https://biblio.ugent.be/publication/8697336/file/8697337 |
op_rights |
Creative Commons Attribution 4.0 International Public License (CC-BY 4.0) info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/nhess-21-837-2021 |
container_title |
Natural Hazards and Earth System Sciences |
container_volume |
21 |
container_issue |
2 |
container_start_page |
837 |
op_container_end_page |
859 |
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1768383360653066240 |