Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999
International audience We investigated the effects of variations in the 4 primary mid-latitude large-scale atmospheric circulation patterns on nutrients potentially limiting phytoplankton growth in the Mediterranean Sea (nitrate and phosphate), with a focus on the key deep convective areas of the ba...
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ftunivnantes:oai:HAL:insu-03451461v1 2023-05-15T17:31:42+02:00 Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 Reale, M Salon, S Somot, S Solidoro, C Giorgi, F Crise, A Cossarini, G Lazzari, P Sevault, F National Institute of Oceanography and Experimental Geophysics (OGS) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) 2020-12-03 https://hal-insu.archives-ouvertes.fr/insu-03451461 https://hal-insu.archives-ouvertes.fr/insu-03451461/document https://hal-insu.archives-ouvertes.fr/insu-03451461/file/c082p117.pdf https://doi.org/10.3354/cr01620 en eng HAL CCSD Inter Research info:eu-repo/semantics/altIdentifier/doi/10.3354/cr01620 insu-03451461 https://hal-insu.archives-ouvertes.fr/insu-03451461 https://hal-insu.archives-ouvertes.fr/insu-03451461/document https://hal-insu.archives-ouvertes.fr/insu-03451461/file/c082p117.pdf doi:10.3354/cr01620 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 0936-577X EISSN: 1616-1572 Climate Research https://hal-insu.archives-ouvertes.fr/insu-03451461 Climate Research, 2020, 82, pp.117-136. ⟨10.3354/cr01620⟩ [SDU]Sciences of the Universe [physics] info:eu-repo/semantics/article Journal articles 2020 ftunivnantes https://doi.org/10.3354/cr01620 2023-02-22T02:39:35Z International audience We investigated the effects of variations in the 4 primary mid-latitude large-scale atmospheric circulation patterns on nutrients potentially limiting phytoplankton growth in the Mediterranean Sea (nitrate and phosphate), with a focus on the key deep convective areas of the basin (Gulf of Lions, Southern Adriatic Sea, Southern Aegean Sea and Rhodes Gyre). Monthly indices of these 4 modes of variability, together with a high-resolution hindcast of the Mediterranean Sea physics and biogeochemistry covering the period 1961-1999, were used to determine the physical mechanisms explaining the influence of these patterns on nutrient distribution and variability. We found a decrease in the concentration of phosphate and nitrate for each unit of increase in the index values of the East Atlantic and East Atlantic/Western Russian variability modes in the area of the Gulf of Lions, while a signal of the opposite sign was associated with the North Atlantic Oscillation in the Aegean Sea and Rhodes Gyre. In both cases, the variability observed was related to a significant variation in the mixed layer depth driven by heat losses and wind stress over the areas. The East Atlantic pattern played a major role in driving the long-term dynamics of both phosphate and nitrate availability in the Gulf of Lions, with a particularly pronounced effect in December and January. For both the Aegean Sea and Rhodes Gyre, the most prominent correlations were found between the North Atlantic Oscillation and phosphate, with a highly consistent behavior in the 2 areas associated with common physical forcing and exchange of properties among them. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Université de Nantes: HAL-UNIV-NANTES Climate Research 82 117 136 |
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Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
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ftunivnantes |
language |
English |
topic |
[SDU]Sciences of the Universe [physics] |
spellingShingle |
[SDU]Sciences of the Universe [physics] Reale, M Salon, S Somot, S Solidoro, C Giorgi, F Crise, A Cossarini, G Lazzari, P Sevault, F Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 |
topic_facet |
[SDU]Sciences of the Universe [physics] |
description |
International audience We investigated the effects of variations in the 4 primary mid-latitude large-scale atmospheric circulation patterns on nutrients potentially limiting phytoplankton growth in the Mediterranean Sea (nitrate and phosphate), with a focus on the key deep convective areas of the basin (Gulf of Lions, Southern Adriatic Sea, Southern Aegean Sea and Rhodes Gyre). Monthly indices of these 4 modes of variability, together with a high-resolution hindcast of the Mediterranean Sea physics and biogeochemistry covering the period 1961-1999, were used to determine the physical mechanisms explaining the influence of these patterns on nutrient distribution and variability. We found a decrease in the concentration of phosphate and nitrate for each unit of increase in the index values of the East Atlantic and East Atlantic/Western Russian variability modes in the area of the Gulf of Lions, while a signal of the opposite sign was associated with the North Atlantic Oscillation in the Aegean Sea and Rhodes Gyre. In both cases, the variability observed was related to a significant variation in the mixed layer depth driven by heat losses and wind stress over the areas. The East Atlantic pattern played a major role in driving the long-term dynamics of both phosphate and nitrate availability in the Gulf of Lions, with a particularly pronounced effect in December and January. For both the Aegean Sea and Rhodes Gyre, the most prominent correlations were found between the North Atlantic Oscillation and phosphate, with a highly consistent behavior in the 2 areas associated with common physical forcing and exchange of properties among them. |
author2 |
National Institute of Oceanography and Experimental Geophysics (OGS) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France -Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Reale, M Salon, S Somot, S Solidoro, C Giorgi, F Crise, A Cossarini, G Lazzari, P Sevault, F |
author_facet |
Reale, M Salon, S Somot, S Solidoro, C Giorgi, F Crise, A Cossarini, G Lazzari, P Sevault, F |
author_sort |
Reale, M |
title |
Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 |
title_short |
Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 |
title_full |
Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 |
title_fullStr |
Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 |
title_full_unstemmed |
Influence of large-scale atmospheric circulation patterns on nutrient dynamics in the Mediterranean Sea in the extended winter season (October-March) 1961-1999 |
title_sort |
influence of large-scale atmospheric circulation patterns on nutrient dynamics in the mediterranean sea in the extended winter season (october-march) 1961-1999 |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal-insu.archives-ouvertes.fr/insu-03451461 https://hal-insu.archives-ouvertes.fr/insu-03451461/document https://hal-insu.archives-ouvertes.fr/insu-03451461/file/c082p117.pdf https://doi.org/10.3354/cr01620 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 0936-577X EISSN: 1616-1572 Climate Research https://hal-insu.archives-ouvertes.fr/insu-03451461 Climate Research, 2020, 82, pp.117-136. ⟨10.3354/cr01620⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3354/cr01620 insu-03451461 https://hal-insu.archives-ouvertes.fr/insu-03451461 https://hal-insu.archives-ouvertes.fr/insu-03451461/document https://hal-insu.archives-ouvertes.fr/insu-03451461/file/c082p117.pdf doi:10.3354/cr01620 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3354/cr01620 |
container_title |
Climate Research |
container_volume |
82 |
container_start_page |
117 |
op_container_end_page |
136 |
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1766129390591148032 |