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 (phyto- a...
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Copernicus GmbH
2024
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Online Access: | https://lup.lub.lu.se/record/1d027103-4644-457d-920f-026543a92dd0 https://doi.org/10.5194/gmd-17-1729-2024 |
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ftulundlup:oai:lup.lub.lu.se:1d027103-4644-457d-920f-026543a92dd0 2024-04-28T08:39:38+00:00 A diatom extension to the cGEnIE Earth system model - EcoGEnIE 1.1 Naidoo-Bagwell, Aaron A. Monteiro, Fanny M. Hendry, Katharine R. Burgan, Scott Wilson, Jamie D. Ward, Ben A. Ridgwell, Andy Conley, Daniel J. 2024-02 https://lup.lub.lu.se/record/1d027103-4644-457d-920f-026543a92dd0 https://doi.org/10.5194/gmd-17-1729-2024 eng eng Copernicus GmbH https://lup.lub.lu.se/record/1d027103-4644-457d-920f-026543a92dd0 http://dx.doi.org/10.5194/gmd-17-1729-2024 scopus:85186751570 Geoscientific Model Development; 17(4), pp 1729-1748 (2024) ISSN: 1991-959X Oceanography Hydrology Water Resources contributiontojournal/article info:eu-repo/semantics/article text 2024 ftulundlup https://doi.org/10.5194/gmd-17-1729-2024 2024-04-09T23:55:45Z 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 achieve best fits to observations of diatom biogeography and size class distribution as well as to global ocean nutrient and dissolved oxygen distributions. This, in conjunction with a previously developed representation of opal dissolution and an updated representation of the ocean iron cycle in the water column, resulted in an improved distribution of dissolved oxygen in the water column relative to the previous EcoGEnIE 1.0, with global export production (7.4GtCyr-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 Lund University Publications (LUP) Geoscientific Model Development 17 4 1729 1748 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Oceanography Hydrology Water Resources |
spellingShingle |
Oceanography Hydrology Water Resources Naidoo-Bagwell, Aaron A. Monteiro, Fanny M. Hendry, Katharine R. Burgan, Scott Wilson, Jamie D. Ward, Ben A. Ridgwell, Andy Conley, Daniel J. A diatom extension to the cGEnIE Earth system model - EcoGEnIE 1.1 |
topic_facet |
Oceanography Hydrology Water Resources |
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 achieve best fits to observations of diatom biogeography and size class distribution as well as to global ocean nutrient and dissolved oxygen distributions. This, in conjunction with a previously developed representation of opal dissolution and an updated representation of the ocean iron cycle in the water column, resulted in an improved distribution of dissolved oxygen in the water column relative to the previous EcoGEnIE 1.0, with global export production (7.4GtCyr-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 A. Monteiro, Fanny M. Hendry, Katharine R. Burgan, Scott Wilson, Jamie D. Ward, Ben A. Ridgwell, Andy Conley, Daniel J. |
author_facet |
Naidoo-Bagwell, Aaron A. Monteiro, Fanny M. Hendry, Katharine R. Burgan, Scott Wilson, Jamie D. Ward, Ben A. Ridgwell, Andy Conley, Daniel J. |
author_sort |
Naidoo-Bagwell, Aaron A. |
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 |
publisher |
Copernicus GmbH |
publishDate |
2024 |
url |
https://lup.lub.lu.se/record/1d027103-4644-457d-920f-026543a92dd0 https://doi.org/10.5194/gmd-17-1729-2024 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
Geoscientific Model Development; 17(4), pp 1729-1748 (2024) ISSN: 1991-959X |
op_relation |
https://lup.lub.lu.se/record/1d027103-4644-457d-920f-026543a92dd0 http://dx.doi.org/10.5194/gmd-17-1729-2024 scopus:85186751570 |
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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1797570578961399808 |