Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea
The ocean is an important sink for carbon and heat, yet high-resolution measurements of biogeochemical properties relevant to global climate change are being made only sporadically in the ocean at present. There is a growing need for automated, real-time, long-term measurements of CO 2 in the ocean...
Published in: | Marine Chemistry |
---|---|
Main Authors: | , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2000
|
Subjects: | |
Online Access: | https://eprints.soton.ac.uk/358341/ |
id |
ftsouthampton:oai:eprints.soton.ac.uk:358341 |
---|---|
record_format |
openpolar |
spelling |
ftsouthampton:oai:eprints.soton.ac.uk:358341 2023-07-30T04:05:37+02:00 Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea Bates, Nicholas R. Merlivat, Liliane Beaumont, Laurence Pequignet, A.Christine 2000 https://eprints.soton.ac.uk/358341/ English eng Bates, Nicholas R., Merlivat, Liliane, Beaumont, Laurence and Pequignet, A.Christine (2000) Intercomparison of shipboard and moored CARIOCA buoy seawater fCO2 measurements in the Sargasso Sea. Marine Chemistry, 72 (2-4), 239-255. (doi:10.1016/S0304-4203(00)00084-0 <http://dx.doi.org/10.1016/S0304-4203(00)00084-0>). Article PeerReviewed 2000 ftsouthampton https://doi.org/10.1016/S0304-4203(00)00084-0 2023-07-09T21:49:30Z The ocean is an important sink for carbon and heat, yet high-resolution measurements of biogeochemical properties relevant to global climate change are being made only sporadically in the ocean at present. There is a growing need for automated, real-time, long-term measurements of CO 2 in the ocean using a network of sensors, strategically placed on ships, moorings, free-drifting buoys and autonomous remotely operated vehicles. The ground-truthing of new sensor technologies is a vital component of present and future efforts to monitor changes in the ocean carbon cycle and air–sea exchange of CO 2 . A comparison of a moored Carbon Interface Ocean Atmosphere (CARIOCA) buoy and shipboard fugacity of CO2 (fCO2) measurements was conducted in the western North Atlantic during two extended periods (>1 month) in 1997. The CARIOCA buoy was deployed on the Bermuda Testbed Mooring (BTM), which is located 5 km north of the site of the US Joint Global Ocean Flux Study (JGOFS) Bermuda Atlantic Time-series Study (BATS). The high frequency of sampling revealed that temperature and fCO 2 responded to physical forcing by the atmosphere on timescales from diurnal to 4–8 days. Concurrent with the deployments of the CARIOCA buoy, frequent measurements of surface fCO 2 were made from the R/V Weatherbird II during opportunistic visits to the BTM and BATS sites, providing a direct calibration of the CARIOCA buoy fCO 2 data. Although, the in situ ground-truthing of the CARIOCA buoy was complicated by diurnal processes, sub-mesoscale and fine-scale variability, the CARIOCA buoy fCO 2 data was accurate within 3±6 µatm of shipboard fCO 2 data for periods up to 50 days. Longer-term assessments were not possible due to the CARIOCA buoy breaking free of the BTM and drifting into waters with different fCO 2 -temperature properties. Strategies are put forward for future calibration of other in situ sensors. Article in Journal/Newspaper North Atlantic University of Southampton: e-Prints Soton Marine Chemistry 72 2-4 239 255 |
institution |
Open Polar |
collection |
University of Southampton: e-Prints Soton |
op_collection_id |
ftsouthampton |
language |
English |
description |
The ocean is an important sink for carbon and heat, yet high-resolution measurements of biogeochemical properties relevant to global climate change are being made only sporadically in the ocean at present. There is a growing need for automated, real-time, long-term measurements of CO 2 in the ocean using a network of sensors, strategically placed on ships, moorings, free-drifting buoys and autonomous remotely operated vehicles. The ground-truthing of new sensor technologies is a vital component of present and future efforts to monitor changes in the ocean carbon cycle and air–sea exchange of CO 2 . A comparison of a moored Carbon Interface Ocean Atmosphere (CARIOCA) buoy and shipboard fugacity of CO2 (fCO2) measurements was conducted in the western North Atlantic during two extended periods (>1 month) in 1997. The CARIOCA buoy was deployed on the Bermuda Testbed Mooring (BTM), which is located 5 km north of the site of the US Joint Global Ocean Flux Study (JGOFS) Bermuda Atlantic Time-series Study (BATS). The high frequency of sampling revealed that temperature and fCO 2 responded to physical forcing by the atmosphere on timescales from diurnal to 4–8 days. Concurrent with the deployments of the CARIOCA buoy, frequent measurements of surface fCO 2 were made from the R/V Weatherbird II during opportunistic visits to the BTM and BATS sites, providing a direct calibration of the CARIOCA buoy fCO 2 data. Although, the in situ ground-truthing of the CARIOCA buoy was complicated by diurnal processes, sub-mesoscale and fine-scale variability, the CARIOCA buoy fCO 2 data was accurate within 3±6 µatm of shipboard fCO 2 data for periods up to 50 days. Longer-term assessments were not possible due to the CARIOCA buoy breaking free of the BTM and drifting into waters with different fCO 2 -temperature properties. Strategies are put forward for future calibration of other in situ sensors. |
format |
Article in Journal/Newspaper |
author |
Bates, Nicholas R. Merlivat, Liliane Beaumont, Laurence Pequignet, A.Christine |
spellingShingle |
Bates, Nicholas R. Merlivat, Liliane Beaumont, Laurence Pequignet, A.Christine Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea |
author_facet |
Bates, Nicholas R. Merlivat, Liliane Beaumont, Laurence Pequignet, A.Christine |
author_sort |
Bates, Nicholas R. |
title |
Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea |
title_short |
Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea |
title_full |
Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea |
title_fullStr |
Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea |
title_full_unstemmed |
Intercomparison of shipboard and moored CARIOCA buoy seawater fCO 2 measurements in the Sargasso Sea |
title_sort |
intercomparison of shipboard and moored carioca buoy seawater fco 2 measurements in the sargasso sea |
publishDate |
2000 |
url |
https://eprints.soton.ac.uk/358341/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
Bates, Nicholas R., Merlivat, Liliane, Beaumont, Laurence and Pequignet, A.Christine (2000) Intercomparison of shipboard and moored CARIOCA buoy seawater fCO2 measurements in the Sargasso Sea. Marine Chemistry, 72 (2-4), 239-255. (doi:10.1016/S0304-4203(00)00084-0 <http://dx.doi.org/10.1016/S0304-4203(00)00084-0>). |
op_doi |
https://doi.org/10.1016/S0304-4203(00)00084-0 |
container_title |
Marine Chemistry |
container_volume |
72 |
container_issue |
2-4 |
container_start_page |
239 |
op_container_end_page |
255 |
_version_ |
1772817661863919616 |