Journal cover Journal topic
The Cryosphere An interactive open-access journal of the European Geosciences Union
https://doi.org/10.5194/tc-2017-250
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 4.0 License.
Research article
15 Nov 2017
Review status
This discussion paper is a preprint. It is a manuscript under review for the journal The Cryosphere (TC).
A new tracking algorithm for sea ice age distribution estimation
Anton Andreevich Korosov1, Pierre Rampal1, Leif Toudal Pedersen2, Roberto Saldo2, Yufang Ye3, Georg Heygster4, Thomas Lavergne5, Signe Aaboe6, and Fanny Girard-Ardhuin7 1Nansen Environmental and Remote Sensing Center, Thormohlensgate 47, Bergen, 5009, Norway
2Technical University of Denmark, Lyngby, Denmark
3Chalmers University of Technology, Gothenburg, Sweden
4University of Bremen, Bremen, Germany
5Norwegian Meteorological Institute, Oslo, Norway
6Norwegian Meteorological Institute, Tromso, Norway
7Ifremer, Univ. Brest, CNRS, IRD, Laboratoire d'Oceanographie Physique et Spatiale (LOPS), IUEM, 29280, Brest, France
Abstract. A new algorithm for estimating sea ice age (SIA) distribution based on the Eulerian advection scheme is presented. The advection scheme accounts for the observed divergence/convergence and freezing/melting of sea ice and predicts consequent generation/loss of new ice. The algorithm uses daily gridded sea ice drift and sea ice concentration products from the Ocean and Sea Ice Satellite Application Facility and produces gridded fractions of sea ice of a specific age. Thus, each grid cell of the output product contains a frequency distribution of sea ice age allowing to apply mean, median, weighted average or other statistical measures. The produced SIA maps and time series are compared to the National Snow and Ice Data Center SIA product. Several improvements related to the usage of the new ice drift product, constraining the algorithm by the observed ice concentration and preventing undersampling by the Eulerian scheme are demonstrated. Muliyear ice (MYI) concentration is computed as a sum of all multi-year ice fractions and compared to the MYI products based on passive and active microwave and SAR products.

Citation: Korosov, A. A., Rampal, P., Pedersen, L. T., Saldo, R., Ye, Y., Heygster, G., Lavergne, T., Aaboe, S., and Girard-Ardhuin, F.: A new tracking algorithm for sea ice age distribution estimation, The Cryosphere Discuss., https://doi.org/10.5194/tc-2017-250, in review, 2017.
Anton Andreevich Korosov et al.
Anton Andreevich Korosov et al.
Anton Andreevich Korosov et al.

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