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DOI	10.5194/tc-12-2147-2018
	Observations and modelling of algal growth on a snowpack in north-western Greenland
	Onuma Y.; Takeuchi N.; Tanaka S.; Nagatsuka N.; Niwano M.; Aoki T.
发表日期	2018
ISSN	19940416
卷号	12 期号:6
英文摘要	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 94ĝ€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 3.5ĝ€ × ĝ€107ĝ€cellsĝ€mĝ'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 6.9ĝ€ × ĝ€102ĝ€cellsĝ€mĝ'2, a growth rate of 0.42ĝ€dĝ'1, and a carrying capacity of 3.5ĝ€ × ĝ€107ĝ€cellsĝ€mĝ'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. © Author(s) 2018.
学科领域	albedo; algal bloom; alpine environment; carrying capacity; glacier; growth curve; growth rate; modeling; observational method; polar region; snow cover; snowmelt; snowpack; Arctic; Greenland; Thule; algae
语种	英语
scopus关键词	albedo; algal bloom; alpine environment; carrying capacity; glacier; growth curve; growth rate; modeling; observational method; polar region; snow cover; snowmelt; snowpack; Arctic; Greenland; Thule; algae
来源期刊	Cryosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/119120
作者单位	Institute of Industrial Science, University of Tokyo, Kashiwa, 277-8574, Japan; Graduate School of Science, Chiba University, Chiba, 263-8522, Japan; National Institute of Polar Research, Tokyo, 190-8518, Japan; Meteorological Research Institute, Japan Meteorological Agency, Tsukuba, 305-0052, Japan; Graduate School of Natural Science and Technology, Okayama University, Okayama, 700-8530, Japan
推荐引用方式 GB/T 7714	Onuma Y.,Takeuchi N.,Tanaka S.,et al. Observations and modelling of algal growth on a snowpack in north-western Greenland[J],2018,12(6).
APA	Onuma Y.,Takeuchi N.,Tanaka S.,Nagatsuka N.,Niwano M.,&Aoki T..(2018).Observations and modelling of algal growth on a snowpack in north-western Greenland.Cryosphere,12(6).
MLA	Onuma Y.,et al."Observations and modelling of algal growth on a snowpack in north-western Greenland".Cryosphere 12.6(2018).