Climate pathways behind phytoplankton-induced atmospheric warming
We investigate the ways in which marine biologically mediated heating increases the surface atmospheric temperature. While the effects of phytoplankton light absorption on the ocean have gained attention over the past years, the impact of this biogeophysical mechanism on the atmosphere is still uncl...
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2022
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Online Access: | https://doi.org/10.5194/bg-19-223-2022 https://doaj.org/article/d596f3bc8c4341dd8b61244ea25f1b05 |
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ftdoajarticles:oai:doaj.org/article:d596f3bc8c4341dd8b61244ea25f1b05 2023-05-15T18:18:31+02:00 Climate pathways behind phytoplankton-induced atmospheric warming R. Asselot F. Lunkeit P. B. Holden I. Hense 2022-01-01T00:00:00Z https://doi.org/10.5194/bg-19-223-2022 https://doaj.org/article/d596f3bc8c4341dd8b61244ea25f1b05 EN eng Copernicus Publications https://bg.copernicus.org/articles/19/223/2022/bg-19-223-2022.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-19-223-2022 1726-4170 1726-4189 https://doaj.org/article/d596f3bc8c4341dd8b61244ea25f1b05 Biogeosciences, Vol 19, Pp 223-239 (2022) Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/bg-19-223-2022 2022-12-31T16:30:45Z We investigate the ways in which marine biologically mediated heating increases the surface atmospheric temperature. While the effects of phytoplankton light absorption on the ocean have gained attention over the past years, the impact of this biogeophysical mechanism on the atmosphere is still unclear. Phytoplankton light absorption warms the surface of the ocean, which in turn affects the air–sea heat and CO 2 exchanges. However, the contribution of air–sea heat versus CO 2 fluxes in the phytoplankton-induced atmospheric warming has not been yet determined. Different so-called climate pathways are involved. We distinguish heat exchange, CO 2 exchange, dissolved CO 2 , solubility of CO 2 and sea-ice-covered area. To shed more light on this subject, we employ the EcoGEnIE Earth system model that includes a new light penetration scheme and isolate the effects of individual fluxes. Our results indicate that phytoplankton-induced changes in air–sea CO 2 exchange warm the atmosphere by 0.71 ∘ C due to higher greenhouse gas concentrations. The phytoplankton-induced changes in air–sea heat exchange cool the atmosphere by 0.02 ∘ C due to a larger amount of outgoing longwave radiation. Overall, the enhanced air–sea CO 2 exchange due to phytoplankton light absorption is the main driver in the biologically induced atmospheric heating. Article in Journal/Newspaper Sea ice Directory of Open Access Journals: DOAJ Articles Biogeosciences 19 1 223 239 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
spellingShingle |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 R. Asselot F. Lunkeit P. B. Holden I. Hense Climate pathways behind phytoplankton-induced atmospheric warming |
topic_facet |
Ecology QH540-549.5 Life QH501-531 Geology QE1-996.5 |
description |
We investigate the ways in which marine biologically mediated heating increases the surface atmospheric temperature. While the effects of phytoplankton light absorption on the ocean have gained attention over the past years, the impact of this biogeophysical mechanism on the atmosphere is still unclear. Phytoplankton light absorption warms the surface of the ocean, which in turn affects the air–sea heat and CO 2 exchanges. However, the contribution of air–sea heat versus CO 2 fluxes in the phytoplankton-induced atmospheric warming has not been yet determined. Different so-called climate pathways are involved. We distinguish heat exchange, CO 2 exchange, dissolved CO 2 , solubility of CO 2 and sea-ice-covered area. To shed more light on this subject, we employ the EcoGEnIE Earth system model that includes a new light penetration scheme and isolate the effects of individual fluxes. Our results indicate that phytoplankton-induced changes in air–sea CO 2 exchange warm the atmosphere by 0.71 ∘ C due to higher greenhouse gas concentrations. The phytoplankton-induced changes in air–sea heat exchange cool the atmosphere by 0.02 ∘ C due to a larger amount of outgoing longwave radiation. Overall, the enhanced air–sea CO 2 exchange due to phytoplankton light absorption is the main driver in the biologically induced atmospheric heating. |
format |
Article in Journal/Newspaper |
author |
R. Asselot F. Lunkeit P. B. Holden I. Hense |
author_facet |
R. Asselot F. Lunkeit P. B. Holden I. Hense |
author_sort |
R. Asselot |
title |
Climate pathways behind phytoplankton-induced atmospheric warming |
title_short |
Climate pathways behind phytoplankton-induced atmospheric warming |
title_full |
Climate pathways behind phytoplankton-induced atmospheric warming |
title_fullStr |
Climate pathways behind phytoplankton-induced atmospheric warming |
title_full_unstemmed |
Climate pathways behind phytoplankton-induced atmospheric warming |
title_sort |
climate pathways behind phytoplankton-induced atmospheric warming |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/bg-19-223-2022 https://doaj.org/article/d596f3bc8c4341dd8b61244ea25f1b05 |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
Biogeosciences, Vol 19, Pp 223-239 (2022) |
op_relation |
https://bg.copernicus.org/articles/19/223/2022/bg-19-223-2022.pdf https://doaj.org/toc/1726-4170 https://doaj.org/toc/1726-4189 doi:10.5194/bg-19-223-2022 1726-4170 1726-4189 https://doaj.org/article/d596f3bc8c4341dd8b61244ea25f1b05 |
op_doi |
https://doi.org/10.5194/bg-19-223-2022 |
container_title |
Biogeosciences |
container_volume |
19 |
container_issue |
1 |
container_start_page |
223 |
op_container_end_page |
239 |
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1766195109248892928 |