The Internal Consistency of CO 2 Measurements in the Equatorial Pacific
During a recent NOAA JGOFS Equatorial Pacific cruise all four analytical parameters of the carbonate system were measured—pH, total alkalinity (TA), total carbon dioxide (TCO2), and the fugacity of carbon dioxide (fCO2). The measurements made during leg 2 on surface waters have been used to examine...
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1993
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ftusouthflorida:oai:digitalcommons.usf.edu:msc_facpub-2702 2023-07-30T04:02:55+02:00 The Internal Consistency of CO 2 Measurements in the Equatorial Pacific Millero, Frank J Byrne, Robert H Wanninkhof, Rik Feely, Richard Clayton, Tonya Murphy, Paulette Lamb, Marilyn F 1993-01-01T08:00:00Z https://digitalcommons.usf.edu/msc_facpub/1699 https://doi.org/10.1016/0304-4203(93)90208-6 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/msc_facpub/1699 doi:10.1016/0304-4203(93)90208-6 https://doi.org/10.1016/0304-4203(93)90208-6 Marine Science Faculty Publications Life Sciences article 1993 ftusouthflorida https://doi.org/10.1016/0304-4203(93)90208-6 2023-07-13T21:02:06Z During a recent NOAA JGOFS Equatorial Pacific cruise all four analytical parameters of the carbonate system were measured—pH, total alkalinity (TA), total carbon dioxide (TCO2), and the fugacity of carbon dioxide (fCO2). The measurements made during leg 2 on surface waters have been used to examine the internal consistency of the carbon dioxide system in these waters. The internal consistency of the measurements was examined by using various inputs of the measured parameters (pHTA, pHTCO2, pHfCO2, fCO2TA, fCO2TCO2 and TATCO2) to calculate the components of the CO2 system. The results indicate that the measurements have an internal consistency of ±0.003–0.006 in pH, ±5–7 μmol kg−1 in TA, ±5–7 μmol kg−1 in TCO2 and ±6–9 μAtm in fCO2 if reliable constants are used for the dissociation of carbonic acid in seawater. These results indicate that our present understanding of the thermodynamics of the carbonate system in seawater is close to the present accuracy in measuring the various parameters of the system (±0.002 in pH, ±4 μmol kg−1 in TA, ±2 μmol kg−1 in TCO2 and ±2 μAtm in fCO2). Article in Journal/Newspaper Carbonic acid University of South Florida St. Petersburg: Digital USFSP Pacific Marine Chemistry 44 2-4 269 280 |
institution |
Open Polar |
collection |
University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
language |
unknown |
topic |
Life Sciences |
spellingShingle |
Life Sciences Millero, Frank J Byrne, Robert H Wanninkhof, Rik Feely, Richard Clayton, Tonya Murphy, Paulette Lamb, Marilyn F The Internal Consistency of CO 2 Measurements in the Equatorial Pacific |
topic_facet |
Life Sciences |
description |
During a recent NOAA JGOFS Equatorial Pacific cruise all four analytical parameters of the carbonate system were measured—pH, total alkalinity (TA), total carbon dioxide (TCO2), and the fugacity of carbon dioxide (fCO2). The measurements made during leg 2 on surface waters have been used to examine the internal consistency of the carbon dioxide system in these waters. The internal consistency of the measurements was examined by using various inputs of the measured parameters (pHTA, pHTCO2, pHfCO2, fCO2TA, fCO2TCO2 and TATCO2) to calculate the components of the CO2 system. The results indicate that the measurements have an internal consistency of ±0.003–0.006 in pH, ±5–7 μmol kg−1 in TA, ±5–7 μmol kg−1 in TCO2 and ±6–9 μAtm in fCO2 if reliable constants are used for the dissociation of carbonic acid in seawater. These results indicate that our present understanding of the thermodynamics of the carbonate system in seawater is close to the present accuracy in measuring the various parameters of the system (±0.002 in pH, ±4 μmol kg−1 in TA, ±2 μmol kg−1 in TCO2 and ±2 μAtm in fCO2). |
format |
Article in Journal/Newspaper |
author |
Millero, Frank J Byrne, Robert H Wanninkhof, Rik Feely, Richard Clayton, Tonya Murphy, Paulette Lamb, Marilyn F |
author_facet |
Millero, Frank J Byrne, Robert H Wanninkhof, Rik Feely, Richard Clayton, Tonya Murphy, Paulette Lamb, Marilyn F |
author_sort |
Millero, Frank J |
title |
The Internal Consistency of CO 2 Measurements in the Equatorial Pacific |
title_short |
The Internal Consistency of CO 2 Measurements in the Equatorial Pacific |
title_full |
The Internal Consistency of CO 2 Measurements in the Equatorial Pacific |
title_fullStr |
The Internal Consistency of CO 2 Measurements in the Equatorial Pacific |
title_full_unstemmed |
The Internal Consistency of CO 2 Measurements in the Equatorial Pacific |
title_sort |
internal consistency of co 2 measurements in the equatorial pacific |
publisher |
Digital Commons @ University of South Florida |
publishDate |
1993 |
url |
https://digitalcommons.usf.edu/msc_facpub/1699 https://doi.org/10.1016/0304-4203(93)90208-6 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_source |
Marine Science Faculty Publications |
op_relation |
https://digitalcommons.usf.edu/msc_facpub/1699 doi:10.1016/0304-4203(93)90208-6 https://doi.org/10.1016/0304-4203(93)90208-6 |
op_doi |
https://doi.org/10.1016/0304-4203(93)90208-6 |
container_title |
Marine Chemistry |
container_volume |
44 |
container_issue |
2-4 |
container_start_page |
269 |
op_container_end_page |
280 |
_version_ |
1772813810128650240 |