A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1
We extend the ecological component (‘ECOGEM’) of the carbon-centric Grid Enabled Integrated Earth system model (‘cGEnIE’) to include a diatom functional group. ECOGEM represents plankton community dynamics via a spectrum of ecophysiological traits originally based on size and plankton food web (phyt...
Published in: | Geoscientific Model Development |
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2024
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Online Access: | https://hdl.handle.net/1983/fda7bd4c-e889-4547-88b2-51099df9b28b https://research-information.bris.ac.uk/en/publications/fda7bd4c-e889-4547-88b2-51099df9b28b https://doi.org/10.5194/gmd-17-1729-2024 |
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ftubristolcris:oai:research-information.bris.ac.uk:publications/fda7bd4c-e889-4547-88b2-51099df9b28b 2024-04-21T08:12:16+00:00 A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 Naidoo-Bagwell, Aaron Monteiro, Fanny M Hendry, Katharine Burgan, Scott Wilson, J.D. Ridgwell, Andy Ward, Ben Conley, Daniel 2024-02-27 https://hdl.handle.net/1983/fda7bd4c-e889-4547-88b2-51099df9b28b https://research-information.bris.ac.uk/en/publications/fda7bd4c-e889-4547-88b2-51099df9b28b https://doi.org/10.5194/gmd-17-1729-2024 eng eng https://research-information.bris.ac.uk/en/publications/fda7bd4c-e889-4547-88b2-51099df9b28b info:eu-repo/semantics/openAccess Naidoo-Bagwell , A , Monteiro , F M , Hendry , K , Burgan , S , Wilson , J D , Ridgwell , A , Ward , B & Conley , D 2024 , ' A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 ' , Geoscientific Model Development , vol. 17 , no. 4 , pp. 1729-1748 . https://doi.org/10.5194/gmd-17-1729-2024 article 2024 ftubristolcris https://doi.org/10.5194/gmd-17-1729-2024 2024-03-27T15:25:44Z We extend the ecological component (‘ECOGEM’) of the carbon-centric Grid Enabled Integrated Earth system model (‘cGEnIE’) to include a diatom functional group. ECOGEM represents plankton community dynamics via a spectrum of ecophysiological traits originally based on size and plankton food web (phyto- and zooplankton; EcoGEnIE 1.0), which we developed here to account for a diatom functional group (EcoGEnIE 1.1). We tuned EcoGEnIE 1.1, exploring a range of ecophysiological parameter values specific to phytoplankton, including diatom growth and survival (18 parameters over 550 runs) to achieved best fits to observations of diatom biogeography and size class distribution, and to global ocean nutrient and dissolved oxygen distributions. This, in conjunction with a previously developed representation in the water column of opal dissolution and an updated representation of the ocean iron cycle, resulted in an improved distribution of dissolved oxygen in the water column relative to the previous EcoGEnIE 1.0, with global export production (7.4 Gt C yr-1) now closer to previous estimates. Simulated diatom biogeography is characterised by larger size classes dominating at high latitudes, notably in the Southern Ocean, and smaller size classes dominating at lower latitudes. Overall, diatom biological productivity accounts for ~ 20% of global carbon biomass in the model, with diatoms outcompeting other phytoplankton functional groups when dissolved silica is available due to their faster maximum photosynthetic rates and reduced palatability to grazers. Adding a diatom functional group provides the cGEnIE Earth system model with an extended capability to explore ecological dynamics and their influence on ocean biogeochemistry. Article in Journal/Newspaper Southern Ocean University of Bristol: Bristol Research Geoscientific Model Development 17 4 1729 1748 |
institution |
Open Polar |
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University of Bristol: Bristol Research |
op_collection_id |
ftubristolcris |
language |
English |
description |
We extend the ecological component (‘ECOGEM’) of the carbon-centric Grid Enabled Integrated Earth system model (‘cGEnIE’) to include a diatom functional group. ECOGEM represents plankton community dynamics via a spectrum of ecophysiological traits originally based on size and plankton food web (phyto- and zooplankton; EcoGEnIE 1.0), which we developed here to account for a diatom functional group (EcoGEnIE 1.1). We tuned EcoGEnIE 1.1, exploring a range of ecophysiological parameter values specific to phytoplankton, including diatom growth and survival (18 parameters over 550 runs) to achieved best fits to observations of diatom biogeography and size class distribution, and to global ocean nutrient and dissolved oxygen distributions. This, in conjunction with a previously developed representation in the water column of opal dissolution and an updated representation of the ocean iron cycle, resulted in an improved distribution of dissolved oxygen in the water column relative to the previous EcoGEnIE 1.0, with global export production (7.4 Gt C yr-1) now closer to previous estimates. Simulated diatom biogeography is characterised by larger size classes dominating at high latitudes, notably in the Southern Ocean, and smaller size classes dominating at lower latitudes. Overall, diatom biological productivity accounts for ~ 20% of global carbon biomass in the model, with diatoms outcompeting other phytoplankton functional groups when dissolved silica is available due to their faster maximum photosynthetic rates and reduced palatability to grazers. Adding a diatom functional group provides the cGEnIE Earth system model with an extended capability to explore ecological dynamics and their influence on ocean biogeochemistry. |
format |
Article in Journal/Newspaper |
author |
Naidoo-Bagwell, Aaron Monteiro, Fanny M Hendry, Katharine Burgan, Scott Wilson, J.D. Ridgwell, Andy Ward, Ben Conley, Daniel |
spellingShingle |
Naidoo-Bagwell, Aaron Monteiro, Fanny M Hendry, Katharine Burgan, Scott Wilson, J.D. Ridgwell, Andy Ward, Ben Conley, Daniel A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 |
author_facet |
Naidoo-Bagwell, Aaron Monteiro, Fanny M Hendry, Katharine Burgan, Scott Wilson, J.D. Ridgwell, Andy Ward, Ben Conley, Daniel |
author_sort |
Naidoo-Bagwell, Aaron |
title |
A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 |
title_short |
A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 |
title_full |
A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 |
title_fullStr |
A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 |
title_full_unstemmed |
A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 |
title_sort |
diatom extension to the cgenie earth system model – ecogenie 1.1 |
publishDate |
2024 |
url |
https://hdl.handle.net/1983/fda7bd4c-e889-4547-88b2-51099df9b28b https://research-information.bris.ac.uk/en/publications/fda7bd4c-e889-4547-88b2-51099df9b28b https://doi.org/10.5194/gmd-17-1729-2024 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Naidoo-Bagwell , A , Monteiro , F M , Hendry , K , Burgan , S , Wilson , J D , Ridgwell , A , Ward , B & Conley , D 2024 , ' A diatom extension to the cGEnIE Earth system model – EcoGEnIE 1.1 ' , Geoscientific Model Development , vol. 17 , no. 4 , pp. 1729-1748 . https://doi.org/10.5194/gmd-17-1729-2024 |
op_relation |
https://research-information.bris.ac.uk/en/publications/fda7bd4c-e889-4547-88b2-51099df9b28b |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/gmd-17-1729-2024 |
container_title |
Geoscientific Model Development |
container_volume |
17 |
container_issue |
4 |
container_start_page |
1729 |
op_container_end_page |
1748 |
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1796932268731662336 |