Observations and modelling of algal growth on a snowpack in north-western Greenland
Snow algal bloom is a common phenomenon on melting snowpacks in polar and alpine regions and can substantially increase snow melt rates due to the effect of albedo reduction on the snow surface. In order to reproduce algal growth on the snow surface using a numerical model, temporal changes in snow...
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Copernicus Publications
2018
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fttriple:oai:gotriple.eu:oai:doaj.org/article:567d8fda34344b38ad046ca56e15ddb9 2023-05-15T16:21:14+02:00 Observations and modelling of algal growth on a snowpack in north-western Greenland Y. Onuma N. Takeuchi S. Tanaka N. Nagatsuka M. Niwano T. Aoki 2018-06-01 https://doi.org/10.5194/tc-12-2147-2018 https://www.the-cryosphere.net/12/2147/2018/tc-12-2147-2018.pdf https://doaj.org/article/567d8fda34344b38ad046ca56e15ddb9 en eng Copernicus Publications doi:10.5194/tc-12-2147-2018 1994-0416 1994-0424 https://www.the-cryosphere.net/12/2147/2018/tc-12-2147-2018.pdf https://doaj.org/article/567d8fda34344b38ad046ca56e15ddb9 undefined The Cryosphere, Vol 12, Pp 2147-2158 (2018) geo envir Journal Article https://vocabularies.coar-repositories.org/resource_types/c_6501/ 2018 fttriple https://doi.org/10.5194/tc-12-2147-2018 2023-01-22T19:12:15Z Snow algal bloom is a common phenomenon on melting snowpacks in polar and alpine regions and can substantially increase snow melt rates due to the effect of albedo reduction on the snow surface. In order to reproduce algal growth on the snow surface using a numerical model, temporal changes in snow algal abundance were investigated on the Qaanaaq Glacier in north-western Greenland from June to August 2014. Snow algae first appeared at the study sites in late June, which was approximately 94 h after air temperatures exceeded the melting point. Algal abundance increased exponentially after this appearance, but the increasing rate became slow after late July, and finally reached 3.5 × 107 cells m−2 in early August. We applied a logistic model to the algal growth curve and found that the algae could be reproduced with an initial cell concentration of 6.9 × 102 cells m−2, a growth rate of 0.42 d−1, and a carrying capacity of 3.5 × 107 cells m−2 on this glacier. This model has the potential to simulate algal blooms from meteorological data sets and to evaluate their impact on the melting of seasonal snowpacks and glaciers. Article in Journal/Newspaper glacier Greenland Qaanaaq The Cryosphere Unknown Greenland Qaanaaq ENVELOPE(-69.232,-69.232,77.467,77.467) The Cryosphere 12 6 2147 2158 |
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Open Polar |
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language |
English |
topic |
geo envir |
spellingShingle |
geo envir Y. Onuma N. Takeuchi S. Tanaka N. Nagatsuka M. Niwano T. Aoki Observations and modelling of algal growth on a snowpack in north-western Greenland |
topic_facet |
geo envir |
description |
Snow algal bloom is a common phenomenon on melting snowpacks in polar and alpine regions and can substantially increase snow melt rates due to the effect of albedo reduction on the snow surface. In order to reproduce algal growth on the snow surface using a numerical model, temporal changes in snow algal abundance were investigated on the Qaanaaq Glacier in north-western Greenland from June to August 2014. Snow algae first appeared at the study sites in late June, which was approximately 94 h after air temperatures exceeded the melting point. Algal abundance increased exponentially after this appearance, but the increasing rate became slow after late July, and finally reached 3.5 × 107 cells m−2 in early August. We applied a logistic model to the algal growth curve and found that the algae could be reproduced with an initial cell concentration of 6.9 × 102 cells m−2, a growth rate of 0.42 d−1, and a carrying capacity of 3.5 × 107 cells m−2 on this glacier. This model has the potential to simulate algal blooms from meteorological data sets and to evaluate their impact on the melting of seasonal snowpacks and glaciers. |
format |
Article in Journal/Newspaper |
author |
Y. Onuma N. Takeuchi S. Tanaka N. Nagatsuka M. Niwano T. Aoki |
author_facet |
Y. Onuma N. Takeuchi S. Tanaka N. Nagatsuka M. Niwano T. Aoki |
author_sort |
Y. Onuma |
title |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_short |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_full |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_fullStr |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_full_unstemmed |
Observations and modelling of algal growth on a snowpack in north-western Greenland |
title_sort |
observations and modelling of algal growth on a snowpack in north-western greenland |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/tc-12-2147-2018 https://www.the-cryosphere.net/12/2147/2018/tc-12-2147-2018.pdf https://doaj.org/article/567d8fda34344b38ad046ca56e15ddb9 |
long_lat |
ENVELOPE(-69.232,-69.232,77.467,77.467) |
geographic |
Greenland Qaanaaq |
geographic_facet |
Greenland Qaanaaq |
genre |
glacier Greenland Qaanaaq The Cryosphere |
genre_facet |
glacier Greenland Qaanaaq The Cryosphere |
op_source |
The Cryosphere, Vol 12, Pp 2147-2158 (2018) |
op_relation |
doi:10.5194/tc-12-2147-2018 1994-0416 1994-0424 https://www.the-cryosphere.net/12/2147/2018/tc-12-2147-2018.pdf https://doaj.org/article/567d8fda34344b38ad046ca56e15ddb9 |
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undefined |
op_doi |
https://doi.org/10.5194/tc-12-2147-2018 |
container_title |
The Cryosphere |
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12 |
container_issue |
6 |
container_start_page |
2147 |
op_container_end_page |
2158 |
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1766009247742558208 |