Glider-based observations of CO2 in the Labrador Sea
Ocean gliders can provide high-spatial- and temporal-resolution data and target specific ocean regions at a low cost compared to ship-based measurements. An important gap, however, given the need for carbon measurements, is the lack of capable sensors for glider-based CO 2 measurements. We need to d...
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ftcopernicus:oai:publications.copernicus.org:os85804 2023-05-15T17:06:02+02:00 Glider-based observations of CO2 in the Labrador Sea Oppeln-Bronikowski, Nicolai Young, Brad Atamanchuk, Dariia Wallace, Douglas 2021-01-04 application/pdf https://doi.org/10.5194/os-17-1-2021 https://os.copernicus.org/articles/17/1/2021/ eng eng doi:10.5194/os-17-1-2021 https://os.copernicus.org/articles/17/1/2021/ eISSN: 1812-0792 Text 2021 ftcopernicus https://doi.org/10.5194/os-17-1-2021 2021-01-11T17:22:15Z Ocean gliders can provide high-spatial- and temporal-resolution data and target specific ocean regions at a low cost compared to ship-based measurements. An important gap, however, given the need for carbon measurements, is the lack of capable sensors for glider-based CO 2 measurements. We need to develop robust methods to evaluate novel CO 2 sensors for gliders. Here we present results from testing the performance of a novel CO 2 optode sensor ( Atamanchuk et al. , 2014 ) , deployed on a Slocum glider, in the Labrador Sea and on the Newfoundland Shelf. This paper (1) investigates the performance of the CO 2 optode on two glider deployments, (2) demonstrates the utility of using the autonomous SeaCycler profiler mooring ( Send et al. , 2013 Atamanchuk et al. , 2020 ) to improve in situ sensor data, and (3) presents data from moored and mobile platforms to resolve fine scales of temporal and spatial variability of O 2 and p CO 2 in the Labrador Sea. The Aanderaa CO 2 optode is an early prototype sensor that has not undergone rigorous testing on a glider but is compact and uses little power. Our analysis shows that the sensor suffers from instability and slow response times ( τ 95 >100 s), affected by different behavior when profiling through small ( <3 ∘ C) vs. large ( >10 ∘ C) changes in temperature over similar time intervals. We compare the glider and SeaCycler O 2 and CO 2 observations and estimate the glider data uncertainty as ± 6.14 and ± 44.01 µ atm, respectively. From the Labrador Sea mission, we point to short timescales ( <7 d) and distance ( <15 km) scales as important drivers of change in this region. Text Labrador Sea Newfoundland Copernicus Publications: E-Journals Newfoundland Ocean Science 17 1 1 16 |
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Copernicus Publications: E-Journals |
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English |
description |
Ocean gliders can provide high-spatial- and temporal-resolution data and target specific ocean regions at a low cost compared to ship-based measurements. An important gap, however, given the need for carbon measurements, is the lack of capable sensors for glider-based CO 2 measurements. We need to develop robust methods to evaluate novel CO 2 sensors for gliders. Here we present results from testing the performance of a novel CO 2 optode sensor ( Atamanchuk et al. , 2014 ) , deployed on a Slocum glider, in the Labrador Sea and on the Newfoundland Shelf. This paper (1) investigates the performance of the CO 2 optode on two glider deployments, (2) demonstrates the utility of using the autonomous SeaCycler profiler mooring ( Send et al. , 2013 Atamanchuk et al. , 2020 ) to improve in situ sensor data, and (3) presents data from moored and mobile platforms to resolve fine scales of temporal and spatial variability of O 2 and p CO 2 in the Labrador Sea. The Aanderaa CO 2 optode is an early prototype sensor that has not undergone rigorous testing on a glider but is compact and uses little power. Our analysis shows that the sensor suffers from instability and slow response times ( τ 95 >100 s), affected by different behavior when profiling through small ( <3 ∘ C) vs. large ( >10 ∘ C) changes in temperature over similar time intervals. We compare the glider and SeaCycler O 2 and CO 2 observations and estimate the glider data uncertainty as ± 6.14 and ± 44.01 µ atm, respectively. From the Labrador Sea mission, we point to short timescales ( <7 d) and distance ( <15 km) scales as important drivers of change in this region. |
format |
Text |
author |
Oppeln-Bronikowski, Nicolai Young, Brad Atamanchuk, Dariia Wallace, Douglas |
spellingShingle |
Oppeln-Bronikowski, Nicolai Young, Brad Atamanchuk, Dariia Wallace, Douglas Glider-based observations of CO2 in the Labrador Sea |
author_facet |
Oppeln-Bronikowski, Nicolai Young, Brad Atamanchuk, Dariia Wallace, Douglas |
author_sort |
Oppeln-Bronikowski, Nicolai |
title |
Glider-based observations of CO2 in the Labrador Sea |
title_short |
Glider-based observations of CO2 in the Labrador Sea |
title_full |
Glider-based observations of CO2 in the Labrador Sea |
title_fullStr |
Glider-based observations of CO2 in the Labrador Sea |
title_full_unstemmed |
Glider-based observations of CO2 in the Labrador Sea |
title_sort |
glider-based observations of co2 in the labrador sea |
publishDate |
2021 |
url |
https://doi.org/10.5194/os-17-1-2021 https://os.copernicus.org/articles/17/1/2021/ |
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Newfoundland |
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Newfoundland |
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Labrador Sea Newfoundland |
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Labrador Sea Newfoundland |
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eISSN: 1812-0792 |
op_relation |
doi:10.5194/os-17-1-2021 https://os.copernicus.org/articles/17/1/2021/ |
op_doi |
https://doi.org/10.5194/os-17-1-2021 |
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Ocean Science |
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17 |
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1 |
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1 |
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16 |
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1766060934092029952 |