Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity?
Deep convection in the Subpolar Gyre (SPG) forms a link between the upper and lower limbs of the Atlantic Meridional Overturning Circulation (AMOC). The intensity of convection in ocean studies is usually estimated using mixed layer depth (MLD). Here MLD is derived using vertical profiles of potenti...
Published in: | Dynamics of Atmospheres and Oceans |
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Language: | English |
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2023
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Online Access: | https://www.vliz.be/imisdocs/publications/63/386663.pdf |
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ftnioz:oai:imis.nioz.nl:361054 2023-05-15T17:06:11+02:00 Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? Fedorov, A.M. Bashmachnikov, I.L. Iakovleva, A.I. Kuznetsova, D.A. Raj, R.P. 2023 application/pdf https://www.vliz.be/imisdocs/publications/63/386663.pdf en eng info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.dynatmoce.2022.101338 https://www.vliz.be/imisdocs/publications/63/386663.pdf info:eu-repo/semantics/openAccess %3Ci%3EDyn.+Atmos.+Oceans+101%3C%2Fi%3E%3A+101338.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.dynatmoce.2022.101338%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.dynatmoce.2022.101338%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftnioz https://doi.org/10.1016/j.dynatmoce.2022.101338 2023-02-15T23:20:15Z Deep convection in the Subpolar Gyre (SPG) forms a link between the upper and lower limbs of the Atlantic Meridional Overturning Circulation (AMOC). The intensity of convection in ocean studies is usually estimated using mixed layer depth (MLD). Here MLD is derived using vertical profiles of potential density from the gridded ARMOR3D dataset and from in situ observations of the EN4 dataset. Given limited areas of convective chimneys, the robustness of the estimates from an available set of vertical profiles needs to be verified before accessing mechanisms of interannual variability of deep convection. For reaching this goal, we first outlined three convection domains in the SPG with a high frequency of deep convection events: the southwestern Labrador Sea (L-DC), the central Irminger Sea (I-DC), and the area south of Cape Farewell (F-DC). The minimum number of randomly scattered casts, required to be executed from January to April for a robust estimate of the maximum MLD, depends on the typical area of the convective regions within the domain and forms 50 casts for L-DC, 40 casts for I-DC and 10 casts for F-DC. For the investigated convection domains, a sufficient number of casts were collected for several standalone winters of the late 1990s, while continuous time series of the convection intensity can be obtained only since the mid-2000s. Article in Journal/Newspaper Labrador Sea NIOZ Repository (Royal Netherlands Institute for Sea Research) Irminger Sea ENVELOPE(-34.041,-34.041,63.054,63.054) Dynamics of Atmospheres and Oceans 101 101338 |
institution |
Open Polar |
collection |
NIOZ Repository (Royal Netherlands Institute for Sea Research) |
op_collection_id |
ftnioz |
language |
English |
description |
Deep convection in the Subpolar Gyre (SPG) forms a link between the upper and lower limbs of the Atlantic Meridional Overturning Circulation (AMOC). The intensity of convection in ocean studies is usually estimated using mixed layer depth (MLD). Here MLD is derived using vertical profiles of potential density from the gridded ARMOR3D dataset and from in situ observations of the EN4 dataset. Given limited areas of convective chimneys, the robustness of the estimates from an available set of vertical profiles needs to be verified before accessing mechanisms of interannual variability of deep convection. For reaching this goal, we first outlined three convection domains in the SPG with a high frequency of deep convection events: the southwestern Labrador Sea (L-DC), the central Irminger Sea (I-DC), and the area south of Cape Farewell (F-DC). The minimum number of randomly scattered casts, required to be executed from January to April for a robust estimate of the maximum MLD, depends on the typical area of the convective regions within the domain and forms 50 casts for L-DC, 40 casts for I-DC and 10 casts for F-DC. For the investigated convection domains, a sufficient number of casts were collected for several standalone winters of the late 1990s, while continuous time series of the convection intensity can be obtained only since the mid-2000s. |
format |
Article in Journal/Newspaper |
author |
Fedorov, A.M. Bashmachnikov, I.L. Iakovleva, A.I. Kuznetsova, D.A. Raj, R.P. |
spellingShingle |
Fedorov, A.M. Bashmachnikov, I.L. Iakovleva, A.I. Kuznetsova, D.A. Raj, R.P. Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? |
author_facet |
Fedorov, A.M. Bashmachnikov, I.L. Iakovleva, A.I. Kuznetsova, D.A. Raj, R.P. |
author_sort |
Fedorov, A.M. |
title |
Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? |
title_short |
Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? |
title_full |
Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? |
title_fullStr |
Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? |
title_full_unstemmed |
Deep convection in the Subpolar Gyre: Do we have enough data to estimate its intensity? |
title_sort |
deep convection in the subpolar gyre: do we have enough data to estimate its intensity? |
publishDate |
2023 |
url |
https://www.vliz.be/imisdocs/publications/63/386663.pdf |
long_lat |
ENVELOPE(-34.041,-34.041,63.054,63.054) |
geographic |
Irminger Sea |
geographic_facet |
Irminger Sea |
genre |
Labrador Sea |
genre_facet |
Labrador Sea |
op_source |
%3Ci%3EDyn.+Atmos.+Oceans+101%3C%2Fi%3E%3A+101338.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.dynatmoce.2022.101338%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.1016%2Fj.dynatmoce.2022.101338%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/doi.org/10.1016/j.dynatmoce.2022.101338 https://www.vliz.be/imisdocs/publications/63/386663.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.dynatmoce.2022.101338 |
container_title |
Dynamics of Atmospheres and Oceans |
container_volume |
101 |
container_start_page |
101338 |
_version_ |
1766061194450305024 |