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TC | Volume 12, issue 11
The Cryosphere, 12, 3459–3476, 2018
https://doi.org/10.5194/tc-12-3459-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
The Cryosphere, 12, 3459–3476, 2018
https://doi.org/10.5194/tc-12-3459-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

Research article 08 Nov 2018

Research article | 08 Nov 2018

Interannual sea ice thickness variability in the Bay of Bothnia

Iina Ronkainen et al.
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Cited articles  
Eicken, H., Gradinger, R., Salganek, M., Shirasawa, K., Perovich, D., and Leppäranta, M. (Eds.): Field techniques for Sea-ice Research, University of Alaska Press, Fairbanks, 2009. 
FMI: Search for FMI's daily air temperature data, Finnish Meteorological Institute's Download observations, available at: https://en.ilmatieteenlaitos.fi/download-observations#!/, last access: 26 October 2018. 
Gegiuc, A., Similä, M., Karvonen, J., Lensu, M., Mäkynen, M., and Vainio, J.: Estimation of degree of sea ice ridging based on dual-polarized C-band SAR data, The Cryosphere, 12, 343–364, https://doi.org/10.5194/tc-12-343-2018, 2018. 
Haapala, J., Ronkainen, I., Schmeltzer, N., and Sztobryn, M.: Recent Change – Sea Ice, in: Second Assessment of Climate Change for the Baltic Sea Basin, edited by: BACC II Author team, Springer, 145–153, 2015. 
Haas, C.: Evaluation of ship-based electromagnetic-inductive thickness measurements of summer sea-ice in the Bellingshausen and Amundsen Seas, Antarctica, Cold Reg. Sci. Technol., 27, 1–16, 1998. 
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We quantify the sea ice thickness variability in the Bay of Bothnia using various observational data sets. For the first time we use helicopter and shipborne electromagnetic soundings to study changes in drift ice of the Bay of Bothnia. Our results show that the interannual variability of ice thickness is larger in the drift ice zone than in the fast ice zone. Furthermore, the mean thickness of heavily ridged ice near the coast can be several times larger than that of fast ice.
We quantify the sea ice thickness variability in the Bay of Bothnia using various observational...
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