Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea
The Antarctic Marginal Ice Zone (MIZ) accounts for 15% of the Southern Ocean's primary production (PP), but limited data has hindered understanding of its variability and connection to carbon export. Using a combination of gliders, biogeochemical Argo floats and satellite observations in the no...
Published in: | Geophysical Research Letters |
---|---|
Main Authors: | , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2023
|
Subjects: | |
Online Access: | http://hdl.handle.net/10204/13179 https://doi.org/10.1029/2023GL103695 |
id |
ftcsir:oai:researchspace.csir.co.za:10204/13179 |
---|---|
record_format |
openpolar |
spelling |
ftcsir:oai:researchspace.csir.co.za:10204/13179 2023-11-12T04:06:06+01:00 Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea Giddy, IS Nicholson, Sarah-Anne Queste, RY Thomalla, Sandy J Swart, S 2023-08 Fulltext application/pdf http://hdl.handle.net/10204/13179 https://doi.org/10.1029/2023GL103695 en eng https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL103695 Giddy, I., Nicholson, S., Queste, R., Thomalla, S.J. & Swart, S. 2023. Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea. Geophysical Research Letters, 50(16). http://hdl.handle.net/10204/13179 0094-8276 1944-8007 https://doi.org/10.1029/2023GL103695 http://hdl.handle.net/10204/13179 Giddy, I., Nicholson, S., Queste, R., Thomalla, S. J., & Swart, S. (2023). Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea. Geophysical Research Letters, 50(16) , http://hdl.handle.net/10204/13179 Giddy, IS, Sarah-Anne Nicholson, RY Queste, Sandy J Thomalla, and S Swart "Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea." Geophysical Research Letters, 50(16) (2023) http://hdl.handle.net/10204/13179 Giddy I, Nicholson S, Queste R, Thomalla SJ, Swart S. Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea. Geophysical Research Letters, 50(16). 2023; http://hdl.handle.net/10204/13179. 26991 Geophysical Research Letters, 50(16) Antarctic marginal ice zone Bloom phenology Carbon export Sea-ice impact Weddell Sea Article 2023 ftcsir https://doi.org/10.1029/2023GL103695 2023-11-01T00:49:02Z The Antarctic Marginal Ice Zone (MIZ) accounts for 15% of the Southern Ocean's primary production (PP), but limited data has hindered understanding of its variability and connection to carbon export. Using a combination of gliders, biogeochemical Argo floats and satellite observations in the northeast Weddell Sea, we show that years with more sea-ice formation over winter are followed by more intense phytoplankton blooms (~15% greater daily PP) and export to 100 m (~50% higher daily carbon export) the following summer. However, the carbon export beyond the deepest winter mixed layer did not vary in proportion to PP, suggesting different drivers of carbon export at depth compared to surface waters. Furthermore, across the entire MIZ, the response of blooms to sea-ice volume was spatially variable, indicating the need to consider spatial heterogeneity in the response of the biological carbon pump to future sea-ice changes. 13 © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. Smart Places Ocean Systems and Climate Article in Journal/Newspaper Antarc* Antarctic Sea ice Weddell Sea Council for Scientific and Industrial Research (South Africa): CSIR Research Space Geophysical Research Letters 50 16 |
institution |
Open Polar |
collection |
Council for Scientific and Industrial Research (South Africa): CSIR Research Space |
op_collection_id |
ftcsir |
language |
English |
topic |
Antarctic marginal ice zone Bloom phenology Carbon export Sea-ice impact Weddell Sea |
spellingShingle |
Antarctic marginal ice zone Bloom phenology Carbon export Sea-ice impact Weddell Sea Giddy, IS Nicholson, Sarah-Anne Queste, RY Thomalla, Sandy J Swart, S Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
topic_facet |
Antarctic marginal ice zone Bloom phenology Carbon export Sea-ice impact Weddell Sea |
description |
The Antarctic Marginal Ice Zone (MIZ) accounts for 15% of the Southern Ocean's primary production (PP), but limited data has hindered understanding of its variability and connection to carbon export. Using a combination of gliders, biogeochemical Argo floats and satellite observations in the northeast Weddell Sea, we show that years with more sea-ice formation over winter are followed by more intense phytoplankton blooms (~15% greater daily PP) and export to 100 m (~50% higher daily carbon export) the following summer. However, the carbon export beyond the deepest winter mixed layer did not vary in proportion to PP, suggesting different drivers of carbon export at depth compared to surface waters. Furthermore, across the entire MIZ, the response of blooms to sea-ice volume was spatially variable, indicating the need to consider spatial heterogeneity in the response of the biological carbon pump to future sea-ice changes. 13 © 2023 The Authors. This is an open access article under the terms of the Creative Commons Attribution-NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes. Smart Places Ocean Systems and Climate |
format |
Article in Journal/Newspaper |
author |
Giddy, IS Nicholson, Sarah-Anne Queste, RY Thomalla, Sandy J Swart, S |
author_facet |
Giddy, IS Nicholson, Sarah-Anne Queste, RY Thomalla, Sandy J Swart, S |
author_sort |
Giddy, IS |
title |
Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
title_short |
Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
title_full |
Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
title_fullStr |
Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
title_full_unstemmed |
Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
title_sort |
sea-ice impacts inter-annual variability in bloom phenology and carbon export in the weddell sea |
publishDate |
2023 |
url |
http://hdl.handle.net/10204/13179 https://doi.org/10.1029/2023GL103695 |
genre |
Antarc* Antarctic Sea ice Weddell Sea |
genre_facet |
Antarc* Antarctic Sea ice Weddell Sea |
op_source |
Geophysical Research Letters, 50(16) |
op_relation |
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL103695 Giddy, I., Nicholson, S., Queste, R., Thomalla, S.J. & Swart, S. 2023. Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea. Geophysical Research Letters, 50(16). http://hdl.handle.net/10204/13179 0094-8276 1944-8007 https://doi.org/10.1029/2023GL103695 http://hdl.handle.net/10204/13179 Giddy, I., Nicholson, S., Queste, R., Thomalla, S. J., & Swart, S. (2023). Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea. Geophysical Research Letters, 50(16) , http://hdl.handle.net/10204/13179 Giddy, IS, Sarah-Anne Nicholson, RY Queste, Sandy J Thomalla, and S Swart "Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea." Geophysical Research Letters, 50(16) (2023) http://hdl.handle.net/10204/13179 Giddy I, Nicholson S, Queste R, Thomalla SJ, Swart S. Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea. Geophysical Research Letters, 50(16). 2023; http://hdl.handle.net/10204/13179. 26991 |
op_doi |
https://doi.org/10.1029/2023GL103695 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
16 |
_version_ |
1782342187193729024 |