Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March
Our current knowledge of broad-scale patterns of primary production in the Southern Ocean is derived from satellite ocean-colour estimates of chlorophyll a (Chl a ) in the open ocean, typically in spring-summer. Here, we provide evidence that large-scale intra-ice phytoplankton surface aggregation o...
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ftcopernicus:oai:publications.copernicus.org:tcd32352 2023-05-15T13:54:27+02:00 Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March Lieser, J. L. Curran, M. A. J. Bowie, A. R. Davidson, A. T. Doust, S. J. Fraser, A. D. Galton-Fenzi, B. K. Massom, R. A. Meiners, K. M. Melbourne-Thomas, J. Reid, P. A. Strutton, P. G. Vance, T. R. Vancoppenolle, M. Westwood, K. J. Wright, S. W. 2018-09-26 application/pdf https://doi.org/10.5194/tcd-9-6187-2015 https://tc.copernicus.org/preprints/tc-2015-174/ eng eng doi:10.5194/tcd-9-6187-2015 https://tc.copernicus.org/preprints/tc-2015-174/ eISSN: 1994-0424 Text 2018 ftcopernicus https://doi.org/10.5194/tcd-9-6187-2015 2020-07-20T16:24:23Z Our current knowledge of broad-scale patterns of primary production in the Southern Ocean is derived from satellite ocean-colour estimates of chlorophyll a (Chl a ) in the open ocean, typically in spring-summer. Here, we provide evidence that large-scale intra-ice phytoplankton surface aggregation occur off the coast of Antarctica during austral autumn, and that these "blooms" are largely undetected in satellite ocean-colour time series (which mask the ice-covered ocean). We present an analysis of (i) true-colour (visible) satellite imagery in combination with (ii) conventional ocean-colour data, and (iii) direct sampling from a research vessel, to identify and characterise a large-scale intra-ice algal occurrence off the coast of East Antarctica in early autumn (March) 2012. We also present evidence of these autumn "blooms" in other regions (for example, Princess Astrid Coast in 2012) and other years (for example, Terra Nova Bay in 2015) implying regular and widespread occurrence of these phenomena. The occurrence of such undetected algal accumulations implies that the magnitude of primary production in the Southern Ocean is currently underestimated. Text Antarc* Antarctic Antarctica Astrid Coast East Antarctica Princess Astrid Coast Southern Ocean Copernicus Publications: E-Journals Antarctic Austral East Antarctica Southern Ocean Terra Nova Bay |
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Copernicus Publications: E-Journals |
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ftcopernicus |
language |
English |
description |
Our current knowledge of broad-scale patterns of primary production in the Southern Ocean is derived from satellite ocean-colour estimates of chlorophyll a (Chl a ) in the open ocean, typically in spring-summer. Here, we provide evidence that large-scale intra-ice phytoplankton surface aggregation occur off the coast of Antarctica during austral autumn, and that these "blooms" are largely undetected in satellite ocean-colour time series (which mask the ice-covered ocean). We present an analysis of (i) true-colour (visible) satellite imagery in combination with (ii) conventional ocean-colour data, and (iii) direct sampling from a research vessel, to identify and characterise a large-scale intra-ice algal occurrence off the coast of East Antarctica in early autumn (March) 2012. We also present evidence of these autumn "blooms" in other regions (for example, Princess Astrid Coast in 2012) and other years (for example, Terra Nova Bay in 2015) implying regular and widespread occurrence of these phenomena. The occurrence of such undetected algal accumulations implies that the magnitude of primary production in the Southern Ocean is currently underestimated. |
format |
Text |
author |
Lieser, J. L. Curran, M. A. J. Bowie, A. R. Davidson, A. T. Doust, S. J. Fraser, A. D. Galton-Fenzi, B. K. Massom, R. A. Meiners, K. M. Melbourne-Thomas, J. Reid, P. A. Strutton, P. G. Vance, T. R. Vancoppenolle, M. Westwood, K. J. Wright, S. W. |
spellingShingle |
Lieser, J. L. Curran, M. A. J. Bowie, A. R. Davidson, A. T. Doust, S. J. Fraser, A. D. Galton-Fenzi, B. K. Massom, R. A. Meiners, K. M. Melbourne-Thomas, J. Reid, P. A. Strutton, P. G. Vance, T. R. Vancoppenolle, M. Westwood, K. J. Wright, S. W. Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March |
author_facet |
Lieser, J. L. Curran, M. A. J. Bowie, A. R. Davidson, A. T. Doust, S. J. Fraser, A. D. Galton-Fenzi, B. K. Massom, R. A. Meiners, K. M. Melbourne-Thomas, J. Reid, P. A. Strutton, P. G. Vance, T. R. Vancoppenolle, M. Westwood, K. J. Wright, S. W. |
author_sort |
Lieser, J. L. |
title |
Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March |
title_short |
Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March |
title_full |
Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March |
title_fullStr |
Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March |
title_full_unstemmed |
Antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: Beware the ice of March |
title_sort |
antarctic slush-ice algal accumulation not quantified through conventional satellite imagery: beware the ice of march |
publishDate |
2018 |
url |
https://doi.org/10.5194/tcd-9-6187-2015 https://tc.copernicus.org/preprints/tc-2015-174/ |
geographic |
Antarctic Austral East Antarctica Southern Ocean Terra Nova Bay |
geographic_facet |
Antarctic Austral East Antarctica Southern Ocean Terra Nova Bay |
genre |
Antarc* Antarctic Antarctica Astrid Coast East Antarctica Princess Astrid Coast Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Astrid Coast East Antarctica Princess Astrid Coast Southern Ocean |
op_source |
eISSN: 1994-0424 |
op_relation |
doi:10.5194/tcd-9-6187-2015 https://tc.copernicus.org/preprints/tc-2015-174/ |
op_doi |
https://doi.org/10.5194/tcd-9-6187-2015 |
_version_ |
1766260346929020928 |