dc.contributor.author |
Giddy, IS
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|
dc.contributor.author |
Nicholson, Sarah-Anne
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|
dc.contributor.author |
Queste, RY
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dc.contributor.author |
Thomalla, Sandy J
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dc.contributor.author |
Swart, S
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dc.date.accessioned |
2023-10-26T09:59:09Z |
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dc.date.available |
2023-10-26T09:59:09Z |
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dc.date.issued |
2023-08 |
|
dc.identifier.citation |
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. <i>Geophysical Research Letters, 50(16).</i> http://hdl.handle.net/10204/13179 |
en_ZA |
dc.identifier.issn |
0094-8276 |
|
dc.identifier.issn |
1944-8007 |
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dc.identifier.uri |
https://doi.org/10.1029/2023GL103695
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|
dc.identifier.uri |
http://hdl.handle.net/10204/13179
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|
dc.description.abstract |
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. |
en_US |
dc.format |
Fulltext |
en_US |
dc.language.iso |
en |
en_US |
dc.relation.uri |
https://agupubs.onlinelibrary.wiley.com/doi/10.1029/2023GL103695 |
en_US |
dc.source |
Geophysical Research Letters, 50(16) |
en_US |
dc.subject |
Antarctic marginal ice zone |
en_US |
dc.subject |
Bloom phenology |
en_US |
dc.subject |
Carbon export |
en_US |
dc.subject |
Sea-ice impact |
en_US |
dc.subject |
Weddell Sea |
en_US |
dc.title |
Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea |
en_US |
dc.type |
Article |
en_US |
dc.description.pages |
13 |
en_US |
dc.description.note |
© 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. |
en_US |
dc.description.cluster |
Smart Places |
en_US |
dc.description.impactarea |
Ocean Systems and Climate |
en_US |
dc.identifier.apacitation |
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. <i>Geophysical Research Letters, 50(16)</i>, http://hdl.handle.net/10204/13179 |
en_ZA |
dc.identifier.chicagocitation |
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." <i>Geophysical Research Letters, 50(16)</i> (2023) http://hdl.handle.net/10204/13179 |
en_ZA |
dc.identifier.vancouvercitation |
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. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Giddy, IS
AU - Nicholson, Sarah-Anne
AU - Queste, RY
AU - Thomalla, Sandy J
AU - Swart, S
AB - 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.
DA - 2023-08
DB - ResearchSpace
DP - CSIR
J1 - Geophysical Research Letters, 50(16)
KW - Antarctic marginal ice zone
KW - Bloom phenology
KW - Carbon export
KW - Sea-ice impact
KW - Weddell Sea
LK - https://researchspace.csir.co.za
PY - 2023
SM - 0094-8276
SM - 1944-8007
T1 - Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea
TI - Sea-ice impacts inter-annual variability in bloom phenology and carbon export in the Weddell Sea
UR - http://hdl.handle.net/10204/13179
ER -
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en_ZA |
dc.identifier.worklist |
26991 |
en_US |