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The Cryosphere An interactive open-access journal of the European Geosciences Union
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
Research article
13 Sep 2013
Review status
This discussion paper is a preprint. A revision of the manuscript 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.,, in review, 2013.
S. Rodier et al.
Interactive discussionStatus: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC C1862: 'Anonymous Review of Paper', Anonymous Referee #1, 24 Sep 2013 Printer-friendly Version 
RC C1886: 'anonymous reviewer comments of 9/27/2013', Anonymous Referee #2, 27 Sep 2013 Printer-friendly Version 
RC C1929: 'tc-2013-92', Anonymous Referee #3, 30 Sep 2013 Printer-friendly Version 
S. Rodier et al.
S. Rodier et al.


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