Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat
Abstract The Southern Ocean seasonal sea ice zone (SIZ) spring is characterized by sea ice retreat and the development of phytoplankton blooms. Until recently, assessing SIZ blooms and associated net community production (bNCP) has been limited by a lack of under‐ice observations. We relate the timi...
Published in: | Geophysical Research Letters |
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Online Access: | https://doi.org/10.1029/2023GL103459 https://doaj.org/article/a700116c69cd4abdbc134f5cc50b81fe |
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ftdoajarticles:oai:doaj.org/article:a700116c69cd4abdbc134f5cc50b81fe 2024-09-15T18:34:06+00:00 Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat S. McClish S. M. Bushinsky 2023-10-01T00:00:00Z https://doi.org/10.1029/2023GL103459 https://doaj.org/article/a700116c69cd4abdbc134f5cc50b81fe EN eng Wiley https://doi.org/10.1029/2023GL103459 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2023GL103459 https://doaj.org/article/a700116c69cd4abdbc134f5cc50b81fe Geophysical Research Letters, Vol 50, Iss 20, Pp n/a-n/a (2023) sea ice net community production phytoplankton biogeochemistry Geophysics. Cosmic physics QC801-809 article 2023 ftdoajarticles https://doi.org/10.1029/2023GL103459 2024-08-05T17:49:23Z Abstract The Southern Ocean seasonal sea ice zone (SIZ) spring is characterized by sea ice retreat and the development of phytoplankton blooms. Until recently, assessing SIZ blooms and associated net community production (bNCP) has been limited by a lack of under‐ice observations. We relate the timing of phytoplankton growth to the drawdown of surface nitrate and sea ice cover and estimate bNCP from biogeochemical profiling float observations. The onset of biological production closely follows initial sea ice breakup and, on average, 64% of bNCP occurs before total sea ice retreat. This indicates that satellite‐derived estimates largely miss under‐ice production and underestimate SIZ bNCP. Float bNCP estimates range from <1 to >4 mol C m−2 bloom−1, with higher bNCP when sea ice breakup occurs early in the year, and the highest bNCP near topographic features that may increase micronutrient supply. Our results suggest changes in Southern Ocean sea ice will influence future bNCP. Article in Journal/Newspaper Sea ice Southern Ocean Directory of Open Access Journals: DOAJ Articles Geophysical Research Letters 50 20 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea ice net community production phytoplankton biogeochemistry Geophysics. Cosmic physics QC801-809 |
spellingShingle |
sea ice net community production phytoplankton biogeochemistry Geophysics. Cosmic physics QC801-809 S. McClish S. M. Bushinsky Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat |
topic_facet |
sea ice net community production phytoplankton biogeochemistry Geophysics. Cosmic physics QC801-809 |
description |
Abstract The Southern Ocean seasonal sea ice zone (SIZ) spring is characterized by sea ice retreat and the development of phytoplankton blooms. Until recently, assessing SIZ blooms and associated net community production (bNCP) has been limited by a lack of under‐ice observations. We relate the timing of phytoplankton growth to the drawdown of surface nitrate and sea ice cover and estimate bNCP from biogeochemical profiling float observations. The onset of biological production closely follows initial sea ice breakup and, on average, 64% of bNCP occurs before total sea ice retreat. This indicates that satellite‐derived estimates largely miss under‐ice production and underestimate SIZ bNCP. Float bNCP estimates range from <1 to >4 mol C m−2 bloom−1, with higher bNCP when sea ice breakup occurs early in the year, and the highest bNCP near topographic features that may increase micronutrient supply. Our results suggest changes in Southern Ocean sea ice will influence future bNCP. |
format |
Article in Journal/Newspaper |
author |
S. McClish S. M. Bushinsky |
author_facet |
S. McClish S. M. Bushinsky |
author_sort |
S. McClish |
title |
Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat |
title_short |
Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat |
title_full |
Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat |
title_fullStr |
Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat |
title_full_unstemmed |
Majority of Southern Ocean Seasonal Sea Ice Zone Bloom Net Community Production Precedes Total Ice Retreat |
title_sort |
majority of southern ocean seasonal sea ice zone bloom net community production precedes total ice retreat |
publisher |
Wiley |
publishDate |
2023 |
url |
https://doi.org/10.1029/2023GL103459 https://doaj.org/article/a700116c69cd4abdbc134f5cc50b81fe |
genre |
Sea ice Southern Ocean |
genre_facet |
Sea ice Southern Ocean |
op_source |
Geophysical Research Letters, Vol 50, Iss 20, Pp n/a-n/a (2023) |
op_relation |
https://doi.org/10.1029/2023GL103459 https://doaj.org/toc/0094-8276 https://doaj.org/toc/1944-8007 1944-8007 0094-8276 doi:10.1029/2023GL103459 https://doaj.org/article/a700116c69cd4abdbc134f5cc50b81fe |
op_doi |
https://doi.org/10.1029/2023GL103459 |
container_title |
Geophysical Research Letters |
container_volume |
50 |
container_issue |
20 |
_version_ |
1810475831976263680 |