Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean
A submesoscale coherent vortex (SCV) with a low oxygen core is characterized from underwater glider and mooring observations from the eastern tropical North Atlantic, north of the Cape Verde Islands. The eddy crossed the mooring with its center and a 1 month time series of the SCV's hydrographi...
Published in: | Journal of Geophysical Research: Oceans |
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Language: | English |
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AGU (American Geophysical Union)
2018
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Online Access: | https://oceanrep.geomar.de/id/eprint/42641/ https://oceanrep.geomar.de/id/eprint/42641/1/Pietri_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2017JC013177 |
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ftoceanrep:oai:oceanrep.geomar.de:42641 2023-05-15T17:30:34+02:00 Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean Pietri, Alice Karstensen, Johannes 2018-03-23 text https://oceanrep.geomar.de/id/eprint/42641/ https://oceanrep.geomar.de/id/eprint/42641/1/Pietri_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2017JC013177 en eng AGU (American Geophysical Union) Wiley https://oceanrep.geomar.de/id/eprint/42641/1/Pietri_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf Pietri, A. and Karstensen, J. (2018) Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean. Open Access Journal of Geophysical Research: Oceans, 123 (3). pp. 2049-2065. DOI 10.1002/2017JC013177 <https://doi.org/10.1002/2017JC013177>. doi:10.1002/2017JC013177 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2018 ftoceanrep https://doi.org/10.1002/2017JC013177 2023-04-07T15:39:14Z A submesoscale coherent vortex (SCV) with a low oxygen core is characterized from underwater glider and mooring observations from the eastern tropical North Atlantic, north of the Cape Verde Islands. The eddy crossed the mooring with its center and a 1 month time series of the SCV's hydrographic and upper 100 m currents structure was obtained. About 45 days after, and ∼100 km west, the SCV frontal zone was surveyed in high temporal and spatial resolution using an underwater glider. Satellite altimetry showed the SCV was formed about 7 months before at the Mauritanian coast. The SCV was located at 80-100 m depth, its diameter was ∼100 km and its maximum swirl velocity ∼0.4 m s-1. A Burger number of 0.2 and a vortex Rossby number 0.15 indicate a flat lens in geostrophic balance. Mooring and glider data show in general comparable dynamical and thermohaline structures, the glider in high spatial resolution, the mooring in high temporal resolution. Surface maps of chlorophyll concentration suggest high productivity inside and around the SCV. The low potential vorticity (PV) core of the SCV is surrounded by filamentary structures, sloping down at different angles from the mixed layer base and with typical width of 10-20 km and a vertical extent of 50-100 m. Article in Journal/Newspaper North Atlantic OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Journal of Geophysical Research: Oceans 123 3 2049 2065 |
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Open Polar |
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OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
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ftoceanrep |
language |
English |
description |
A submesoscale coherent vortex (SCV) with a low oxygen core is characterized from underwater glider and mooring observations from the eastern tropical North Atlantic, north of the Cape Verde Islands. The eddy crossed the mooring with its center and a 1 month time series of the SCV's hydrographic and upper 100 m currents structure was obtained. About 45 days after, and ∼100 km west, the SCV frontal zone was surveyed in high temporal and spatial resolution using an underwater glider. Satellite altimetry showed the SCV was formed about 7 months before at the Mauritanian coast. The SCV was located at 80-100 m depth, its diameter was ∼100 km and its maximum swirl velocity ∼0.4 m s-1. A Burger number of 0.2 and a vortex Rossby number 0.15 indicate a flat lens in geostrophic balance. Mooring and glider data show in general comparable dynamical and thermohaline structures, the glider in high spatial resolution, the mooring in high temporal resolution. Surface maps of chlorophyll concentration suggest high productivity inside and around the SCV. The low potential vorticity (PV) core of the SCV is surrounded by filamentary structures, sloping down at different angles from the mixed layer base and with typical width of 10-20 km and a vertical extent of 50-100 m. |
format |
Article in Journal/Newspaper |
author |
Pietri, Alice Karstensen, Johannes |
spellingShingle |
Pietri, Alice Karstensen, Johannes Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean |
author_facet |
Pietri, Alice Karstensen, Johannes |
author_sort |
Pietri, Alice |
title |
Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean |
title_short |
Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean |
title_full |
Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean |
title_fullStr |
Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean |
title_full_unstemmed |
Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean |
title_sort |
dynamical characterization of a low oxygen submesoscale coherent vortex in the eastern north atlantic ocean |
publisher |
AGU (American Geophysical Union) |
publishDate |
2018 |
url |
https://oceanrep.geomar.de/id/eprint/42641/ https://oceanrep.geomar.de/id/eprint/42641/1/Pietri_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf https://doi.org/10.1002/2017JC013177 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
https://oceanrep.geomar.de/id/eprint/42641/1/Pietri_et_al-2017-Journal_of_Geophysical_Research__Oceans.pdf Pietri, A. and Karstensen, J. (2018) Dynamical Characterization of a Low Oxygen Submesoscale Coherent Vortex in the Eastern North Atlantic Ocean. Open Access Journal of Geophysical Research: Oceans, 123 (3). pp. 2049-2065. DOI 10.1002/2017JC013177 <https://doi.org/10.1002/2017JC013177>. doi:10.1002/2017JC013177 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1002/2017JC013177 |
container_title |
Journal of Geophysical Research: Oceans |
container_volume |
123 |
container_issue |
3 |
container_start_page |
2049 |
op_container_end_page |
2065 |
_version_ |
1766127406510243840 |