An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018
As a contribution to the Regional Carbon Cycle Assessment and Processes phase 2 (RECCAP2) project, we present synthesized estimates of the Arctic Ocean CO 2 uptake and their uncertainties from state-of-the-art surface ocean p CO 2 -observation products, global and regional ocean biogeochemical model...
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ftvliz:oai:oma.vliz.be:361681 2023-05-15T14:47:06+02:00 An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 Yasunaka, S. Manizza, M. Terhaar, J. Olsen, A. Yamaguchi, R. Landschützer, P. Watanabe, E. Carroll, D. Adiwira, H. Müller, J. Hauck, J. 2023 application/pdf https://www.vliz.be/imisdocs/publications/387282.pdf en eng info:eu-repo/semantics/altIdentifier/doi/doi.org/10.5194/egusphere-egu23-10462 https://www.vliz.be/imisdocs/publications/387282.pdf info:eu-repo/semantics/openAccess ,+%3Cb%3E%3Ci%3Ein%3C%2Fi%3E%3C%2Fb%3E%3A+%3Ci%3EEGU+General+Assembly+2023.+Vienna,+Austria+%26+Online,+23%E2%80%9328+April+2023.%3C%2Fi%3E+pp.+EGU23-10462.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.5194%2Fegusphere-egu23-10462%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.5194%2Fegusphere-egu23-10462%3C%2Fa%3E info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2023 ftvliz https://doi.org/10.5194/egusphere-egu23-10462 2023-03-08T23:25:23Z As a contribution to the Regional Carbon Cycle Assessment and Processes phase 2 (RECCAP2) project, we present synthesized estimates of the Arctic Ocean CO 2 uptake and their uncertainties from state-of-the-art surface ocean p CO 2 -observation products, global and regional ocean biogeochemical models and atmospheric inversions. For the period of 1985−2018, the Arctic Ocean represents a net sink of CO 2 of 103 ± 19 TgC yr −1 in the p CO 2 products and 92 ± 30 TgC yr −1 in the ocean biogeochemical models. While the long-term mean CO 2 uptake in the Arctic Ocean is primarily caused by steady-state fluxes of natural carbon, it is enhanced 28% by the atmospheric CO 2 increase and 15% by climate change. Moreover, the climate effect in the Arctic Ocean has become more important in recent years. The CO 2 uptake peaks in late summer and early autumn, and is low in winter because the sea ice cover inhibits sea-air fluxes. The annual mean of CO 2 uptake increased due to the decreasing sea ice concentration both in the p CO 2 products and the ocean biogeochemical models. Both, the mean CO 2 uptake and the trend, is substantially weaker in the atmospheric inversions. Uncertainty across all estimates is large especially in the estimated surface ocean p CO 2 values in the East Siberian Sea and the Laptev Sea, due to scarcity of observations and missing processes in models, such as land-sea fluxes and sediment dynamics. Article in Journal/Newspaper Arctic Arctic Ocean Climate change East Siberian Sea laptev Laptev Sea Sea ice Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) Arctic Arctic Ocean East Siberian Sea ENVELOPE(166.000,166.000,74.000,74.000) Laptev Sea |
institution |
Open Polar |
collection |
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA) |
op_collection_id |
ftvliz |
language |
English |
description |
As a contribution to the Regional Carbon Cycle Assessment and Processes phase 2 (RECCAP2) project, we present synthesized estimates of the Arctic Ocean CO 2 uptake and their uncertainties from state-of-the-art surface ocean p CO 2 -observation products, global and regional ocean biogeochemical models and atmospheric inversions. For the period of 1985−2018, the Arctic Ocean represents a net sink of CO 2 of 103 ± 19 TgC yr −1 in the p CO 2 products and 92 ± 30 TgC yr −1 in the ocean biogeochemical models. While the long-term mean CO 2 uptake in the Arctic Ocean is primarily caused by steady-state fluxes of natural carbon, it is enhanced 28% by the atmospheric CO 2 increase and 15% by climate change. Moreover, the climate effect in the Arctic Ocean has become more important in recent years. The CO 2 uptake peaks in late summer and early autumn, and is low in winter because the sea ice cover inhibits sea-air fluxes. The annual mean of CO 2 uptake increased due to the decreasing sea ice concentration both in the p CO 2 products and the ocean biogeochemical models. Both, the mean CO 2 uptake and the trend, is substantially weaker in the atmospheric inversions. Uncertainty across all estimates is large especially in the estimated surface ocean p CO 2 values in the East Siberian Sea and the Laptev Sea, due to scarcity of observations and missing processes in models, such as land-sea fluxes and sediment dynamics. |
format |
Article in Journal/Newspaper |
author |
Yasunaka, S. Manizza, M. Terhaar, J. Olsen, A. Yamaguchi, R. Landschützer, P. Watanabe, E. Carroll, D. Adiwira, H. Müller, J. Hauck, J. |
spellingShingle |
Yasunaka, S. Manizza, M. Terhaar, J. Olsen, A. Yamaguchi, R. Landschützer, P. Watanabe, E. Carroll, D. Adiwira, H. Müller, J. Hauck, J. An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 |
author_facet |
Yasunaka, S. Manizza, M. Terhaar, J. Olsen, A. Yamaguchi, R. Landschützer, P. Watanabe, E. Carroll, D. Adiwira, H. Müller, J. Hauck, J. |
author_sort |
Yasunaka, S. |
title |
An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 |
title_short |
An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 |
title_full |
An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 |
title_fullStr |
An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 |
title_full_unstemmed |
An assessment of sea-air CO 2 flux in the Arctic Ocean from 1985 to 2018 |
title_sort |
assessment of sea-air co 2 flux in the arctic ocean from 1985 to 2018 |
publishDate |
2023 |
url |
https://www.vliz.be/imisdocs/publications/387282.pdf |
long_lat |
ENVELOPE(166.000,166.000,74.000,74.000) |
geographic |
Arctic Arctic Ocean East Siberian Sea Laptev Sea |
geographic_facet |
Arctic Arctic Ocean East Siberian Sea Laptev Sea |
genre |
Arctic Arctic Ocean Climate change East Siberian Sea laptev Laptev Sea Sea ice |
genre_facet |
Arctic Arctic Ocean Climate change East Siberian Sea laptev Laptev Sea Sea ice |
op_source |
,+%3Cb%3E%3Ci%3Ein%3C%2Fi%3E%3C%2Fb%3E%3A+%3Ci%3EEGU+General+Assembly+2023.+Vienna,+Austria+%26+Online,+23%E2%80%9328+April+2023.%3C%2Fi%3E+pp.+EGU23-10462.+%3Ca+href%3D%22https%3A%2F%2Fdx.doi.org%2F10.5194%2Fegusphere-egu23-10462%22+target%3D%22_blank%22%3Ehttps%3A%2F%2Fdx.doi.org%2F10.5194%2Fegusphere-egu23-10462%3C%2Fa%3E |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/doi.org/10.5194/egusphere-egu23-10462 https://www.vliz.be/imisdocs/publications/387282.pdf |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/egusphere-egu23-10462 |
_version_ |
1766318238559371264 |