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The Cryosphere An interactive open-access journal of the European Geosciences Union
doi:10.5194/tcd-7-4681-2013
© Author(s) 2013. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
13 Sep 2013
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A revision of this discussion paper for further review has not been submitted.
Sea ice detection with space-based LIDAR
S. Rodier1, Y. Hu2, and M. Vaughan2 1SSAI, NASA Langley Research Center, MS 475, Hampton VA 23681-2199, USA
2NASA Langley Research Center, MS 475, Hampton VA 23681-2199, USA
Abstract. Monitoring long-term climate change in the Polar Regions relies on accurate, detailed and repeatable measurements of geophysical processes and states. These regions are among the Earth's most vulnerable ecosystems, and measurements there have shown rapid changes in the seasonality and the extent of snow and sea ice coverage. The authors have recently developed a promising new technique that uses lidar surface measurements from the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) mission to infer ocean surface ice-water phase. CALIPSO's 532 nm depolarization ratio measurements of the ocean surface are uniquely capable of providing information about the ever-changing sea surface state within the Polar Regions. With the finer resolution of the CALIPSO footprint (90 m diameter, spaced 335 m apart) and its ability to acquire measurements during both daytime and nighttime orbit segments and in the presence of clouds, the CALIPSO sea ice product provides fine-scale information on mixed phase scenes and can be used to assess/validate the estimates of sea-ice concentration currently provided by passive sensors. This paper describes the fundamentals of the CALIPSO sea-ice detection and classification technique. We present retrieval results from a six-year study, which are compared to existing data sets obtained by satellite-based passive remote sensors.

Citation: Rodier, S., Hu, Y., and Vaughan, M.: Sea ice detection with space-based LIDAR, The Cryosphere Discuss., 7, 4681-4701, doi:10.5194/tcd-7-4681-2013, 2013.
S. Rodier et al.
Interactive discussionStatus: closed (peer review stopped)
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S. Rodier et al.
S. Rodier et al.

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