Oxygen dynamics in the North Atlantic subtropical gyre
Dissolved oxygen (DO) in the ocean is a tracer for most ocean biogeochemical processes including net community production and remineralization of organic matter which in turn constrains the biological carbon pump. Knowledge of oxygen dynamics in the North Atlantic Ocean is mainly derived from observ...
Published in: | Deep Sea Research Part II: Topical Studies in Oceanography |
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Online Access: | http://hdl.handle.net/10553/49462 https://doi.org/10.1016/j.dsr2.2013.01.004 |
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ftunivlaspalmas:oai:https://accedacris.ulpgc.es:10553/49462 2023-05-15T17:28:12+02:00 Oxygen dynamics in the North Atlantic subtropical gyre Cianca, A. Santana, R. Hartman, S. E. Martín-González, J. M. González-Dávila, M. Rueda, M. J. Llinás Gonzalez, Octavio Neuer, S. GONZALEZ DAVILA, MELCHOR Martin Gonzalez, Juan Manuel SANTANA CASIANO, JUANA MAGDALENA 6506266990 15749449100 24463384400 6603384846 6603931257 7005791831 55901594600 6601945483 3651668 3037163 1495188 1769703 518149 558147 1058239 985789 2013 http://hdl.handle.net/10553/49462 https://doi.org/10.1016/j.dsr2.2013.01.004 eng eng 0967-0645 Deep-Sea Research Part II: Topical Studies in Oceanography 0967-0645 http://hdl.handle.net/10553/49462 doi:10.1016/j.dsr2.2013.01.004 84880942051 000323189200011 147 135 93 WOS:000323189200011 K-4958-2014 H-6127-2015 K-5058-2014 Deep-Sea Research Part II: Topical Studies in Oceanography [ISSN 0967-0645], v. 93, p. 135-147 Investigación Oxygen Production Remineralization BATS ESTOC North Atlantic 2013 ftunivlaspalmas https://doi.org/10.1016/j.dsr2.2013.01.004 2020-02-05T00:08:01Z Dissolved oxygen (DO) in the ocean is a tracer for most ocean biogeochemical processes including net community production and remineralization of organic matter which in turn constrains the biological carbon pump. Knowledge of oxygen dynamics in the North Atlantic Ocean is mainly derived from observations at the Bermuda Atlantic Time-series Study (BATS) site located in the western subtropical gyre which may skew our view of the biogeochemistry of the subtropical North Atlantic. This study presents and compares a 15 yr record of DO observations from ESTOC (European Station for Time-Series in the Ocean, Canary Islands) in the eastern subtropical North Atlantic with the 20 yr record at BATS. Our estimate for net community production of oxygen was 2.3±0.4 mol O2 m−2 yr−1 and of oxygen consumption was −2.3±0.5 mol O2 m−2 yr−1 at ESTOC, and 4 mol O2 m−2 yr−1 and −4.4±1 mol m−2 yr−1 at BATS, respectively. These values were determined by analyzing the time-series using the Discrete Wavelet Transform (DWT) method. These flux values agree with similar estimates from in-situ observational studies but are higher than those from modeling studies. The difference in net oxygen production rates supports previous observations of a lower carbon export in the eastern compared to the western subtropical Atlantic. The inter-annual analysis showed clear annual cycles at BATS whereas longer cycles of nearly 4 years were apparent at ESTOC. The DWT analysis showed trends in DO anomalies dominated by long-term perturbations at a basin scale for the consumption zones at both sites, whereas yearly cycles dominated the production zone at BATS. The long-term perturbations found are likely associated with ventilation of the main thermocline, affecting the consumption and production zones at ESTOC. Other/Unknown Material North Atlantic Universidad de Las Palmas de Gran Canaria: Acceda Deep Sea Research Part II: Topical Studies in Oceanography 93 135 147 |
institution |
Open Polar |
collection |
Universidad de Las Palmas de Gran Canaria: Acceda |
op_collection_id |
ftunivlaspalmas |
language |
English |
topic |
Investigación Oxygen Production Remineralization BATS ESTOC North Atlantic |
spellingShingle |
Investigación Oxygen Production Remineralization BATS ESTOC North Atlantic Cianca, A. Santana, R. Hartman, S. E. Martín-González, J. M. González-Dávila, M. Rueda, M. J. Llinás Gonzalez, Octavio Neuer, S. Oxygen dynamics in the North Atlantic subtropical gyre |
topic_facet |
Investigación Oxygen Production Remineralization BATS ESTOC North Atlantic |
description |
Dissolved oxygen (DO) in the ocean is a tracer for most ocean biogeochemical processes including net community production and remineralization of organic matter which in turn constrains the biological carbon pump. Knowledge of oxygen dynamics in the North Atlantic Ocean is mainly derived from observations at the Bermuda Atlantic Time-series Study (BATS) site located in the western subtropical gyre which may skew our view of the biogeochemistry of the subtropical North Atlantic. This study presents and compares a 15 yr record of DO observations from ESTOC (European Station for Time-Series in the Ocean, Canary Islands) in the eastern subtropical North Atlantic with the 20 yr record at BATS. Our estimate for net community production of oxygen was 2.3±0.4 mol O2 m−2 yr−1 and of oxygen consumption was −2.3±0.5 mol O2 m−2 yr−1 at ESTOC, and 4 mol O2 m−2 yr−1 and −4.4±1 mol m−2 yr−1 at BATS, respectively. These values were determined by analyzing the time-series using the Discrete Wavelet Transform (DWT) method. These flux values agree with similar estimates from in-situ observational studies but are higher than those from modeling studies. The difference in net oxygen production rates supports previous observations of a lower carbon export in the eastern compared to the western subtropical Atlantic. The inter-annual analysis showed clear annual cycles at BATS whereas longer cycles of nearly 4 years were apparent at ESTOC. The DWT analysis showed trends in DO anomalies dominated by long-term perturbations at a basin scale for the consumption zones at both sites, whereas yearly cycles dominated the production zone at BATS. The long-term perturbations found are likely associated with ventilation of the main thermocline, affecting the consumption and production zones at ESTOC. |
author2 |
GONZALEZ DAVILA, MELCHOR Martin Gonzalez, Juan Manuel SANTANA CASIANO, JUANA MAGDALENA 6506266990 15749449100 24463384400 6603384846 6603931257 7005791831 55901594600 6601945483 3651668 3037163 1495188 1769703 518149 558147 1058239 985789 |
author |
Cianca, A. Santana, R. Hartman, S. E. Martín-González, J. M. González-Dávila, M. Rueda, M. J. Llinás Gonzalez, Octavio Neuer, S. |
author_facet |
Cianca, A. Santana, R. Hartman, S. E. Martín-González, J. M. González-Dávila, M. Rueda, M. J. Llinás Gonzalez, Octavio Neuer, S. |
author_sort |
Cianca, A. |
title |
Oxygen dynamics in the North Atlantic subtropical gyre |
title_short |
Oxygen dynamics in the North Atlantic subtropical gyre |
title_full |
Oxygen dynamics in the North Atlantic subtropical gyre |
title_fullStr |
Oxygen dynamics in the North Atlantic subtropical gyre |
title_full_unstemmed |
Oxygen dynamics in the North Atlantic subtropical gyre |
title_sort |
oxygen dynamics in the north atlantic subtropical gyre |
publisher |
0967-0645 |
publishDate |
2013 |
url |
http://hdl.handle.net/10553/49462 https://doi.org/10.1016/j.dsr2.2013.01.004 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Deep-Sea Research Part II: Topical Studies in Oceanography [ISSN 0967-0645], v. 93, p. 135-147 |
op_relation |
Deep-Sea Research Part II: Topical Studies in Oceanography 0967-0645 http://hdl.handle.net/10553/49462 doi:10.1016/j.dsr2.2013.01.004 84880942051 000323189200011 147 135 93 WOS:000323189200011 K-4958-2014 H-6127-2015 K-5058-2014 |
op_doi |
https://doi.org/10.1016/j.dsr2.2013.01.004 |
container_title |
Deep Sea Research Part II: Topical Studies in Oceanography |
container_volume |
93 |
container_start_page |
135 |
op_container_end_page |
147 |
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1766120747980292096 |