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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 19 — Sep. 12, 2011
  • pp: 18696–18706

CALIPSO lidar ratio retrieval over the ocean

Damien Josset, Raymond Rogers, Jacques Pelon, Yongxiang Hu, Zhaoyan Liu, Ali Omar, and Peng-Wang Zhai  »View Author Affiliations

Optics Express, Vol. 19, Issue 19, pp. 18696-18706 (2011)

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We are demonstrating on a few cases the capability of CALIPSO to retrieve the 532 nm lidar ratio over the ocean when CloudSat surface scattering cross section is used as a constraint. We are presenting the algorithm used and comparisons with the column lidar ratio retrieved by the NASA airborne high spectral resolution lidar. For the three cases presented here, the agreement is fairly good. The average CALIPSO 532 nm column lidar ratio bias is 13.7% relative to HSRL, and the relative standard deviation is 13.6%. Considering the natural variability of aerosol microphysical properties, this level of accuracy is significant since the lidar ratio is a good indicator of aerosol types. We are discussing dependencies of the accuracy of retrieved aerosol lidar ratio on atmospheric aerosol homogeneity, lidar signal to noise ratio, and errors in the optical depth retrievals. We are obtaining the best result (bias 7% and standard deviation around 6%) for a nighttime case with a relatively constant lidar ratio (in the vertical) indicative of homogeneous aerosol type.

© 2011 OSA

OCIS Codes
(010.0010) Atmospheric and oceanic optics : Atmospheric and oceanic optics
(280.0280) Remote sensing and sensors : Remote sensing and sensors
(280.3640) Remote sensing and sensors : Lidar
(280.5600) Remote sensing and sensors : Radar

ToC Category:
Remote Sensing

Original Manuscript: June 2, 2011
Revised Manuscript: August 13, 2011
Manuscript Accepted: August 25, 2011
Published: September 9, 2011

Damien Josset, Raymond Rogers, Jacques Pelon, Yongxiang Hu, Zhaoyan Liu, Ali Omar, and Peng-Wang Zhai, "CALIPSO lidar ratio retrieval over the ocean," Opt. Express 19, 18696-18706 (2011)

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