Articles | Volume 9, issue 5
https://doi.org/10.5194/tc-9-1797-2015
https://doi.org/10.5194/tc-9-1797-2015
Research article
 | 
15 Sep 2015
Research article |  | 15 Sep 2015

Inter-comparison and evaluation of sea ice algorithms: towards further identification of challenges and optimal approach using passive microwave observations

N. Ivanova, L. T. Pedersen, R. T. Tonboe, S. Kern, G. Heygster, T. Lavergne, A. Sørensen, R. Saldo, G. Dybkjær, L. Brucker, and M. Shokr

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Revised manuscript accepted for TC
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Cited articles

Andersen, S., Tonboe, R., Kern, S., and Schyberg, H.: Improved retrieval of sea ice total concentration from spaceborne passive microwave observations using numerical weather prediction model fields: an intercomparison of nine algorithms, Remote Sens. Environ., 104, 374–392, 2006.
Andersen, S., Tonboe, R., Kaleschke, L., Heygster, G., and Pedersen, L. T.: Intercomparison of passive microwave sea ice concentration retrievals over the high-concentration Arctic sea ice, J. Geophys. Res., 112, C08004, https://doi.org/10.1029/2006JC003543, 2007.
Ashcroft, P. and Wentz, F. J.: AMSR-E/Aqua L2A Global Swath Spatially-Resampled Brightness Temperatures, Version 2, NASA DAAC at the National Snow and Ice Data Center, Boulder, Colorado USA, https://doi.org/10.5067/AMSR-E/AE_L2A.002, 2003.
Brucker, L., Cavalieri, D. J., Markus, T., and Ivanoff, A.: NASA Team 2 Sea Ice Concentration Algorithm Retrieval Uncertainty, IEEE T. Geosci. Remote, 52, 7336–7352, https://doi.org/10.1109/TGRS.2014.2311376, 2014.
Cavalieri, D. J.: A microwave technique for mapping thin sea ice, J. Geophys. Res., 99, 12561–12572, https://doi.org/10.1029/94JC00707, 1994.
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Short summary
Thirty sea ice algorithms are inter-compared and evaluated systematically over low and high sea ice concentrations, as well as in the presence of thin ice and melt ponds. A hybrid approach is suggested to retrieve sea ice concentration globally for climate monitoring purposes. This approach consists of a combination of two algorithms plus the implementation of a dynamic tie point and atmospheric correction of input brightness temperatures.