Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing
Treatment of the underwater light field in ocean biogeochemical models has been attracting increasing interest, with some models moving towards more complex parameterisations. We conduct a simple sensitivity study of a typical, highly simplified parameterisation. In our study, we vary the phytoplank...
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Copernicus Publications
2017
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ftunswworks:oai:unsworks.library.unsw.edu.au:1959.4/unsworks_53092 2024-05-19T07:48:57+00:00 Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing Kvale, KF Meissner, KJ 2017-10-25 application/pdf http://hdl.handle.net/1959.4/unsworks_53092 https://unsworks.unsw.edu.au/bitstreams/937930bf-8473-4907-bca8-f94649c49d0d/download https://doi.org/10.5194/bg-14-4767-2017 unknown Copernicus Publications http://hdl.handle.net/1959.4/unsworks_53092 https://unsworks.unsw.edu.au/bitstreams/937930bf-8473-4907-bca8-f94649c49d0d/download https://doi.org/10.5194/bg-14-4767-2017 open access https://purl.org/coar/access_right/c_abf2 CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ free_to_read urn:ISSN:1726-4170 urn:ISSN:1726-4189 Biogeosciences, 14, 20, 4767-4780 13 Climate Action 14 Life Below Water anzsrc-for: 04 Earth Sciences anzsrc-for: 05 Environmental Sciences anzsrc-for: 06 Biological Sciences journal article http://purl.org/coar/resource_type/c_6501 2017 ftunswworks https://doi.org/10.5194/bg-14-4767-2017 2024-04-24T00:19:56Z Treatment of the underwater light field in ocean biogeochemical models has been attracting increasing interest, with some models moving towards more complex parameterisations. We conduct a simple sensitivity study of a typical, highly simplified parameterisation. In our study, we vary the phytoplankton light attenuation parameter over a range constrained by data during both pre-industrial equilibrated and future climate scenario RCP8.5. In equilibrium, lower light attenuation parameters (weaker self-shading) shift net primary production (NPP) towards the high latitudes, while higher values of light attenuation (stronger shelf-shading) shift NPP towards the low latitudes. Climate forcing magnifies this relationship through changes in the distribution of nutrients both within and between ocean regions. Where and how NPP responds to climate forcing can determine the magnitude and sign of global NPP trends in this high CO2 future scenario. Ocean oxygen is particularly sensitive to parameter choice. Under higher CO2 concentrations, two simulations establish a strong biogeochemical feedback between the Southern Ocean and low-latitude Pacific that highlights the potential for regional teleconnection. Our simulations serve as a reminder that shifts in fundamental properties (e.g. light attenuation by phytoplankton) over deep time have the potential to alter global biogeochemistry. Article in Journal/Newspaper Southern Ocean UNSW Sydney (The University of New South Wales): UNSWorks Biogeosciences 14 20 4767 4780 |
institution |
Open Polar |
collection |
UNSW Sydney (The University of New South Wales): UNSWorks |
op_collection_id |
ftunswworks |
language |
unknown |
topic |
13 Climate Action 14 Life Below Water anzsrc-for: 04 Earth Sciences anzsrc-for: 05 Environmental Sciences anzsrc-for: 06 Biological Sciences |
spellingShingle |
13 Climate Action 14 Life Below Water anzsrc-for: 04 Earth Sciences anzsrc-for: 05 Environmental Sciences anzsrc-for: 06 Biological Sciences Kvale, KF Meissner, KJ Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
topic_facet |
13 Climate Action 14 Life Below Water anzsrc-for: 04 Earth Sciences anzsrc-for: 05 Environmental Sciences anzsrc-for: 06 Biological Sciences |
description |
Treatment of the underwater light field in ocean biogeochemical models has been attracting increasing interest, with some models moving towards more complex parameterisations. We conduct a simple sensitivity study of a typical, highly simplified parameterisation. In our study, we vary the phytoplankton light attenuation parameter over a range constrained by data during both pre-industrial equilibrated and future climate scenario RCP8.5. In equilibrium, lower light attenuation parameters (weaker self-shading) shift net primary production (NPP) towards the high latitudes, while higher values of light attenuation (stronger shelf-shading) shift NPP towards the low latitudes. Climate forcing magnifies this relationship through changes in the distribution of nutrients both within and between ocean regions. Where and how NPP responds to climate forcing can determine the magnitude and sign of global NPP trends in this high CO2 future scenario. Ocean oxygen is particularly sensitive to parameter choice. Under higher CO2 concentrations, two simulations establish a strong biogeochemical feedback between the Southern Ocean and low-latitude Pacific that highlights the potential for regional teleconnection. Our simulations serve as a reminder that shifts in fundamental properties (e.g. light attenuation by phytoplankton) over deep time have the potential to alter global biogeochemistry. |
format |
Article in Journal/Newspaper |
author |
Kvale, KF Meissner, KJ |
author_facet |
Kvale, KF Meissner, KJ |
author_sort |
Kvale, KF |
title |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_short |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_full |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_fullStr |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_full_unstemmed |
Primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
title_sort |
primary production sensitivity to phytoplankton light attenuation parameter increases with transient forcing |
publisher |
Copernicus Publications |
publishDate |
2017 |
url |
http://hdl.handle.net/1959.4/unsworks_53092 https://unsworks.unsw.edu.au/bitstreams/937930bf-8473-4907-bca8-f94649c49d0d/download https://doi.org/10.5194/bg-14-4767-2017 |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_source |
urn:ISSN:1726-4170 urn:ISSN:1726-4189 Biogeosciences, 14, 20, 4767-4780 |
op_relation |
http://hdl.handle.net/1959.4/unsworks_53092 https://unsworks.unsw.edu.au/bitstreams/937930bf-8473-4907-bca8-f94649c49d0d/download https://doi.org/10.5194/bg-14-4767-2017 |
op_rights |
open access https://purl.org/coar/access_right/c_abf2 CC-BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/ free_to_read |
op_doi |
https://doi.org/10.5194/bg-14-4767-2017 |
container_title |
Biogeosciences |
container_volume |
14 |
container_issue |
20 |
container_start_page |
4767 |
op_container_end_page |
4780 |
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1799467356771057664 |