Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes
Arctic Ocean primary productivity is limited by light and inorganic nutrients. With sea ice cover declining in recent decades, nitrate limitation has been speculated to become more prominent. Although much has been learned about nitrate supply from general patterns of ocean circulation and water col...
Published in: | Frontiers in Marine Science |
---|---|
Main Authors: | , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2020
|
Subjects: | |
Online Access: | https://pure.au.dk/portal/da/publications/panarctic-ocean-primary-production-constrained-by-turbulent-nitrate-fluxes(f5d03f14-0809-4feb-8890-ab91286436e6).html https://doi.org/10.3389/fmars.2020.00150 http://www.scopus.com/inward/record.url?scp=85083337315&partnerID=8YFLogxK |
id |
ftuniaarhuspubl:oai:pure.atira.dk:publications/f5d03f14-0809-4feb-8890-ab91286436e6 |
---|---|
record_format |
openpolar |
spelling |
ftuniaarhuspubl:oai:pure.atira.dk:publications/f5d03f14-0809-4feb-8890-ab91286436e6 2023-12-31T10:02:08+01:00 Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes Randelhoff, Achim Holding, Johnna Janout, Markus Sejr, Mikael Kristian Babin, Marcel Tremblay, Jean Éric Alkire, Matthew B. 2020 https://pure.au.dk/portal/da/publications/panarctic-ocean-primary-production-constrained-by-turbulent-nitrate-fluxes(f5d03f14-0809-4feb-8890-ab91286436e6).html https://doi.org/10.3389/fmars.2020.00150 http://www.scopus.com/inward/record.url?scp=85083337315&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/panarctic-ocean-primary-production-constrained-by-turbulent-nitrate-fluxes(f5d03f14-0809-4feb-8890-ab91286436e6).html info:eu-repo/semantics/openAccess Randelhoff , A , Holding , J , Janout , M , Sejr , M K , Babin , M , Tremblay , J É & Alkire , M B 2020 , ' Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes ' , Frontiers in Marine Science , vol. 7 , 150 . https://doi.org/10.3389/fmars.2020.00150 Arctic climate change flux nitrate primary production sea ice turbulence article 2020 ftuniaarhuspubl https://doi.org/10.3389/fmars.2020.00150 2023-12-07T00:04:05Z Arctic Ocean primary productivity is limited by light and inorganic nutrients. With sea ice cover declining in recent decades, nitrate limitation has been speculated to become more prominent. Although much has been learned about nitrate supply from general patterns of ocean circulation and water column stability, a quantitative analysis requires dedicated turbulence measurements that have only started to accumulate in the last dozen years. Here we present new observations of the turbulent vertical nitrate flux in the Laptev Sea, Baffin Bay, and Young Sound (North-East Greenland), supplementing a compilation of 13 published estimates throughout the Arctic Ocean. Combining all flux estimates with a Pan-Arctic database of in situ measurements of nitrate concentration and density, we found the annual nitrate inventory to be largely determined by the strength of stratification and by bathymetry. Nitrate fluxes explained the observed regional patterns and magnitudes of both new primary production and particle export on annual scales. We argue that with few regional exceptions, vertical turbulent nitrate fluxes can be a reliable proxy of Arctic primary production accessible through autonomous and large-scale measurements. They may also provide a framework to assess nutrient limitation scenarios based on clear energetic and mass budget constraints resulting from turbulent mixing and freshwater flows. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change East Greenland Greenland laptev Laptev Sea Sea ice Aarhus University: Research Frontiers in Marine Science 7 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic climate change flux nitrate primary production sea ice turbulence |
spellingShingle |
Arctic climate change flux nitrate primary production sea ice turbulence Randelhoff, Achim Holding, Johnna Janout, Markus Sejr, Mikael Kristian Babin, Marcel Tremblay, Jean Éric Alkire, Matthew B. Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes |
topic_facet |
Arctic climate change flux nitrate primary production sea ice turbulence |
description |
Arctic Ocean primary productivity is limited by light and inorganic nutrients. With sea ice cover declining in recent decades, nitrate limitation has been speculated to become more prominent. Although much has been learned about nitrate supply from general patterns of ocean circulation and water column stability, a quantitative analysis requires dedicated turbulence measurements that have only started to accumulate in the last dozen years. Here we present new observations of the turbulent vertical nitrate flux in the Laptev Sea, Baffin Bay, and Young Sound (North-East Greenland), supplementing a compilation of 13 published estimates throughout the Arctic Ocean. Combining all flux estimates with a Pan-Arctic database of in situ measurements of nitrate concentration and density, we found the annual nitrate inventory to be largely determined by the strength of stratification and by bathymetry. Nitrate fluxes explained the observed regional patterns and magnitudes of both new primary production and particle export on annual scales. We argue that with few regional exceptions, vertical turbulent nitrate fluxes can be a reliable proxy of Arctic primary production accessible through autonomous and large-scale measurements. They may also provide a framework to assess nutrient limitation scenarios based on clear energetic and mass budget constraints resulting from turbulent mixing and freshwater flows. |
format |
Article in Journal/Newspaper |
author |
Randelhoff, Achim Holding, Johnna Janout, Markus Sejr, Mikael Kristian Babin, Marcel Tremblay, Jean Éric Alkire, Matthew B. |
author_facet |
Randelhoff, Achim Holding, Johnna Janout, Markus Sejr, Mikael Kristian Babin, Marcel Tremblay, Jean Éric Alkire, Matthew B. |
author_sort |
Randelhoff, Achim |
title |
Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes |
title_short |
Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes |
title_full |
Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes |
title_fullStr |
Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes |
title_full_unstemmed |
Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes |
title_sort |
pan-arctic ocean primary production constrained by turbulent nitrate fluxes |
publishDate |
2020 |
url |
https://pure.au.dk/portal/da/publications/panarctic-ocean-primary-production-constrained-by-turbulent-nitrate-fluxes(f5d03f14-0809-4feb-8890-ab91286436e6).html https://doi.org/10.3389/fmars.2020.00150 http://www.scopus.com/inward/record.url?scp=85083337315&partnerID=8YFLogxK |
genre |
Arctic Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change East Greenland Greenland laptev Laptev Sea Sea ice |
genre_facet |
Arctic Arctic Arctic Ocean Baffin Bay Baffin Bay Baffin Climate change East Greenland Greenland laptev Laptev Sea Sea ice |
op_source |
Randelhoff , A , Holding , J , Janout , M , Sejr , M K , Babin , M , Tremblay , J É & Alkire , M B 2020 , ' Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes ' , Frontiers in Marine Science , vol. 7 , 150 . https://doi.org/10.3389/fmars.2020.00150 |
op_relation |
https://pure.au.dk/portal/da/publications/panarctic-ocean-primary-production-constrained-by-turbulent-nitrate-fluxes(f5d03f14-0809-4feb-8890-ab91286436e6).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.3389/fmars.2020.00150 |
container_title |
Frontiers in Marine Science |
container_volume |
7 |
_version_ |
1786809050299629568 |