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Climate Variability & Change

This is a proposal to participate as a member of the Science Definition Team (SDT) for the Ice Cloud and Land Elevation Satellite-II (ICESat-II) mission. Besides the general team member responsibilities, our specific interests are in the issues pertaining to science requirements and instrument performance related to observations of the Arctic and Southern Ocean sea ice cover. We will: provide input on sea ice science requirements; determine how these requirements bear upon the system and lidar designs; provide guidance on the necessary prelaunch studies for meeting science objectives; and help define the geophysical data sets to be produced by the ICESat-II mission. Our expertise with lidars and sea ice has been informed by our recent work on freeboard and thickness retrievals using ICESat-1 data [Kwok et al., 2008; Zwally et al. 2008; Kwok et al., 2007; Kwok et al., 2006; Kwok et al., 2004]. An important issue with sea ice thickness estimation from ICESat-II is the understanding of how uncertainties in freeboard and snow depth propagate into estimates of thickness and volume. We propose to develop an approach for better quantifying these variables and stating what is achievable. The ultimate objective is to characterize and better understand the capability of the end-to-end process (measurement system and algorithms) that will be put in place for producing estimates of freeboard and thickness during the timeframe of ICESat-II.

Project PI: Ronald Kwok/Jet Propulsion Laboratory

Jet Propulsion Laboratory California Institute of Technology M/S 300-235 4800 Oak Grove Drive Pasadena, CA 91109

Phone: (818) 354-5614

Fax: (818) 393-3077

Email:ronald.kwok@jpl.nasa.gov

http://rkwok.jpl.nasa.gov/

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Started: Aug 10, 2010

Last Activity: Dec 15, 2010

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