Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean?
Abstract Quantifying changes in oceanic aerobic respiration is essential for understanding marine deoxygenation. Here we use an Earth system model to investigate if and to what extent oxygen utilization rate (OUR) can be used to track the temporal change of true respiration (Rtrue). Rtrue results fr...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2022GL102645 https://doaj.org/article/2133dd0dec0b4da7a6749b354037bcc7 |
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ftdoajarticles:oai:doaj.org/article:2133dd0dec0b4da7a6749b354037bcc7 2024-09-15T18:23:25+00:00 Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? Haichao Guo Iris Kriest Andreas Oschlies Wolfgang Koeve 2023-07-01T00:00:00Z https://doi.org/10.1029/2022GL102645 https://doaj.org/article/2133dd0dec0b4da7a6749b354037bcc7 EN eng Wiley https://doi.org/10.1029/2022GL102645 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL102645 https://doaj.org/article/2133dd0dec0b4da7a6749b354037bcc7 Geophysical Research Letters, Vol 50, Iss 13, Pp n/a-n/a (2023) mesopelagic respiration oxygen utilization rate Earth system model ocean deoxygenation Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.1029/2022GL102645 2024-08-05T17:49:23Z Abstract Quantifying changes in oceanic aerobic respiration is essential for understanding marine deoxygenation. Here we use an Earth system model to investigate if and to what extent oxygen utilization rate (OUR) can be used to track the temporal change of true respiration (Rtrue). Rtrue results from the degradation of particulate and dissolved organic matter in the model ocean, acting as ground truth to evaluate the accuracy of OUR. Results show that in thermocline and intermediate waters of the North Atlantic Subtropical Gyre (200–1,000 m), vertically integrated OUR and Rtrue both decrease by 0.2 molO2/m2/yr from 1850 to 2100 under global warming. However, in the mesopelagic Tropical South Atlantic, integrated OUR increases by 0.2 molO2/m2/yr, while the Rtrue integral decreases by 0.3 molO2/m2/yr. A possible reason for the diverging OUR and Rtrue is ocean mixing, which affects water mass composition and maps remote respiration changes to the study region. Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 50 13 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
mesopelagic respiration oxygen utilization rate Earth system model ocean deoxygenation Geophysics. Cosmic physics QC801-809 |
spellingShingle |
mesopelagic respiration oxygen utilization rate Earth system model ocean deoxygenation Geophysics. Cosmic physics QC801-809 Haichao Guo Iris Kriest Andreas Oschlies Wolfgang Koeve Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? |
topic_facet |
mesopelagic respiration oxygen utilization rate Earth system model ocean deoxygenation Geophysics. Cosmic physics QC801-809 |
description |
Abstract Quantifying changes in oceanic aerobic respiration is essential for understanding marine deoxygenation. Here we use an Earth system model to investigate if and to what extent oxygen utilization rate (OUR) can be used to track the temporal change of true respiration (Rtrue). Rtrue results from the degradation of particulate and dissolved organic matter in the model ocean, acting as ground truth to evaluate the accuracy of OUR. Results show that in thermocline and intermediate waters of the North Atlantic Subtropical Gyre (200–1,000 m), vertically integrated OUR and Rtrue both decrease by 0.2 molO2/m2/yr from 1850 to 2100 under global warming. However, in the mesopelagic Tropical South Atlantic, integrated OUR increases by 0.2 molO2/m2/yr, while the Rtrue integral decreases by 0.3 molO2/m2/yr. A possible reason for the diverging OUR and Rtrue is ocean mixing, which affects water mass composition and maps remote respiration changes to the study region. |
format |
Article in Journal/Newspaper |
author |
Haichao Guo Iris Kriest Andreas Oschlies Wolfgang Koeve |
author_facet |
Haichao Guo Iris Kriest Andreas Oschlies Wolfgang Koeve |
author_sort |
Haichao Guo |
title |
Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? |
title_short |
Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? |
title_full |
Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? |
title_fullStr |
Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? |
title_full_unstemmed |
Can Oxygen Utilization Rate Be Used to Track the Long‐Term Changes of Aerobic Respiration in the Mesopelagic Atlantic Ocean? |
title_sort |
can oxygen utilization rate be used to track the long‐term changes of aerobic respiration in the mesopelagic atlantic ocean? |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2022GL102645 https://doaj.org/article/2133dd0dec0b4da7a6749b354037bcc7 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Geophysical Research Letters, Vol 50, Iss 13, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2022GL102645 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2022GL102645 https://doaj.org/article/2133dd0dec0b4da7a6749b354037bcc7 |
op_doi |
https://doi.org/10.1029/2022GL102645 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
13 |
_version_ |
1810463637279604736 |