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Quasi-Real-Time and High-Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO2

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/76144

Title: Quasi-Real-Time and High-Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO2
Authors: Li, B. F. Browse this author
Watanabe, Y. W. Browse this author →KAKEN DB
Hosoda, S. Browse this author
Sato, K. Browse this author
Nakano, Y. Browse this author
Issue Date: 16-May-2019
Publisher: American Geophysical Union
Journal Title: Geophysical research letters
Volume: 46
Issue: 9
Start Page: 4836
End Page: 4843
Publisher DOI: 10.1029/2018GL081639
Abstract: Increasing marine uptake of anthropogenic CO2 (C-ant) causes global ocean acidification. To obtain a high-resolution spatiotemporal distribution of oceanic carbon chemistry, we developed new parameterizations of the seawater total alkalinity, and dissolved inorganic carbon from the ocean's surface to 2,000-m depth by using dissolved oxygen, water temperature (T), salinity (S), and pressure (P) data. Using the values of total alkalinity and dissolved inorganic carbon predicted by dissolved oxygen, T, S, and P data derived from autonomous biogeochemical Argo floats, we described the distribution of oceanic C-ant in the 2000s in the subarctic North Pacific at high spatiotemporal resolution. The C-ant was found about 300 m deeper than during the 1990s; its average inventory to 2,000 m was 24.8 +/- 10.2 mol/m(2), about 20% higher than the 1990s average. Future application of parameterizations to global biogeochemical Argo floats data should allow the detailed global mapping of spatiotemporal distributions of CO2 parameters. Plain Language Summary:Age Cy Ocean absorbs the increasing atmospheric CO2 by human activities from 1750s and encourages global ocean acidification. To obtain the human-activity-derived CO2 in the subarctic North Pacific in a high resolution, we applied our empirical ocean carbon chemistry equations using other hydrographic parameters to autonomous biogeochemical Argo floats data. The amount of human-activity-derived CO2 in this region was found about 300 m deeper than during the 1990s and about 20% higher than the 1990s average. Our method allows the development of a system for monitoring long-term trend changes in ocean carbon chemistry similar to other time series stations.
Rights: An edited version of this paper was published by AGU. Copyright 2019 American Geophysical Union.Li, BF; Watanabe, YW; Hosoda, S; Sato, K; Nakano, Y, (2019), Quasi‐Real‐Time and High‐Resolution Spatiotemporal Distribution of Ocean Anthropogenic CO2, Geophysical research letters, Volume46, Issue9, Pages 4836-4843, 10.1029/2018GL081639. To view the published open abstract, go to http://dx.doi.org and enter the DOI.
Type: article
URI: http://hdl.handle.net/2115/76144
Appears in Collections:環境科学院・地球環境科学研究院 (Graduate School of Environmental Science / Faculty of Environmental Earth Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 渡辺 豊

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