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Proceedings Paper

Ice sheet surface elevation retrieval from CALIPSO lidar measurements
Author(s): Xiaomei Lu; Yongxiang Hu
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Paper Abstract

The primary objective of the atmospheric profiling lidar aboard Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) mission launched in April 2006 has been studying the climate impact of clouds and aerosols in the atmosphere. However, CALIPSO lidar also collects information about other components of the Earth’s ecosystem, such as polar ice sheets. The purpose of this study is to propose a new technique to provide high resolution of polar ice sheet surface elevation from CALIPSO single shot lidar measurements (70 m spot size). The new technique relies on an empirical relationship between the peak signal ratio and the distance between the surface and the peak signal range bin center to achieve high altimetry resolution. The ice sheet surface elevation results in the region of Greenland and Antarctic compare very well with the Ice, Cloud and land Elevation Satellite (ICESat) laser altimetry measurements. The comparisons suggest that the obtained CALIPSO ice sheet surface elevation by the new technique is accurate to within 1 m. Based on the new technique, the preliminary data product of along-track topography retrieved from the CALIPSO lidar measurements is available to the altimetry community for evaluation.

Paper Details

Date Published: 20 May 2013
PDF: 8 pages
Proc. SPIE 8731, Laser Radar Technology and Applications XVIII, 87310Z (20 May 2013); doi: 10.1117/12.2026617
Show Author Affiliations
Xiaomei Lu, NASA Langley Research Ctr. (United States)
Yongxiang Hu, NASA Langley Research Ctr. (United States)

Published in SPIE Proceedings Vol. 8731:
Laser Radar Technology and Applications XVIII
Monte D. Turner; Gary W. Kamerman, Editor(s)

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