Chlorophyll-a in Antarctic Landfast Sea Ice : A First Synthesis of Historical Ice Core Data

Meiners, K. M.; Vancoppenolle, M.; Carnat, G.; Castellani, G.; Delille, B.; Delille, D.; Dieckmann, G. S.; Flores, H.; Fripiat, F.; Grotti, M.; Lange, B. A.; Lannuzel, D.; Martin, A.; McMinn, A.; Nomura, D.; Peeken, I.; Rivaro, P.; Ryan, K. G.; Stefels, J.; Swadling, K. M.; Thomas, D. N.; Tison, J.-L.; van der Merwe, P.; van Leeuwe, M. A.; Weldrick, C.; Yang, E. J.

Chlorophyll-a in Antarctic Landfast Sea Ice : A First Synthesis of Historical Ice Core Data

Meiners, K. M.; Vancoppenolle, M.; Carnat, G. et al.

Journal of Geophysical Research : Oceans, 2018, 123(11), 8444-8459

Permalink : https://hdl.handle.net/2115/74730

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アクセス権	open access
URI	https://hdl.handle.net/2115/74730
タイトル	Chlorophyll-a in Antarctic Landfast Sea Ice : A First Synthesis of Historical Ice Core Data
著者	Meiners, K. M. ; Vancoppenolle, M. ; Carnat, G. ; Castellani, G. ; Delille, B. ; Delille, D. ; Dieckmann, G. S. ; Flores, H. ; Fripiat, F. ; Grotti, M. ; Lange, B. A. ; Lannuzel, D. ; Martin, A. ; McMinn, A. ; Nomura, D. ; Peeken, I. ; Rivaro, P. ; Ryan, K. G. ; Stefels, J. ; Swadling, K. M. ; Thomas, D. N. ; Tison, J.-L. ; van der Merwe, P. ; van Leeuwe, M. A. ; Weldrick, C. ; Yang, E. J.
著者名 Meiners, K. M.
著者名 Vancoppenolle, M.
著者名 Carnat, G.
著者名 Castellani, G.
著者名 Delille, B.
著者名 Delille, D.
著者名 Dieckmann, G. S.
著者名 Flores, H.
著者名 Fripiat, F.
著者名 Grotti, M.
著者名 Lange, B. A.
著者名 Lannuzel, D.
著者名 Martin, A.
著者名 McMinn, A.
e-Rad_Researcher 70550739 著者名 Nomura, D.
著者名 Peeken, I.
著者名 Rivaro, P.
著者名 Ryan, K. G.
著者名 Stefels, J.
著者名 Swadling, K. M.
著者名 Thomas, D. N.
著者名 Tison, J.-L.
著者名 van der Merwe, P.
著者名 van Leeuwe, M. A.
著者名 Weldrick, C.
著者名 Yang, E. J.
言語	英語
キーワード	Antarctica
	fast ice
	ice algae
	chlorophyll-a
発行日	2018-12-20
収録物名	Journal of Geophysical Research : Oceans
巻(号)	123(11)
ページ	8444-8459
抄録	Historical sea ice core chlorophyll‐a (Chla) data are used to describe the seasonal, regional, and vertical distribution of ice algal biomass in Antarctic landfast sea ice. The analyses are based on the Antarctic Fast Ice Algae Chlorophyll‐a data set, a compilation of currently available sea ice Chla data from landfast sea ice cores collected at circum‐Antarctic nearshore locations between 1970 and 2015. Ice cores were typically sampled from thermodynamically grown first‐year ice and have thin snow depths (mean = 0.052 ± 0.097 m). The data set comprises 888 ice cores, including 404 full vertical profile cores. Integrated ice algal Chla biomass (range: <0.1–219.9 mg/m2, median = 4.4 mg/m2, interquartile range = 9.9 mg/m2) peaks in late spring and shows elevated levels in autumn. The seasonal Chla development is consistent with the current understanding of physical drivers of ice algal biomass, including the seasonal cycle of irradiance and surface temperatures driving landfast sea ice growth and melt. Landfast ice regions with reported platelet ice formation show maximum ice algal biomass. Ice algal communities in the lowermost third of the ice cores dominate integrated Chla concentrations during most of the year, but internal and surface communities are important, particularly in winter. Through comparison of biomass estimates based on different sea ice sampling strategies, that is, analysis of full cores versus bottom‐ice section sampling, we identify biases in common sampling approaches and provide recommendations for future survey programs: for example, the need to sample fast ice over its entire thickness and to measure auxiliary physicochemical parameters.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	Copyright 2018 American Geophysical Union.
PISSN	2169-9291
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1029/2018JC014245