Articles | Volume 11, issue 3
https://doi.org/10.5194/amt-11-1459-2018
https://doi.org/10.5194/amt-11-1459-2018
Research article
 | 
14 Mar 2018
Research article |  | 14 Mar 2018

CALIPSO lidar calibration at 532 nm: version 4 nighttime algorithm

Jayanta Kar, Mark A. Vaughan, Kam-Pui Lee, Jason L. Tackett, Melody A. Avery, Anne Garnier, Brian J. Getzewich, William H. Hunt, Damien Josset, Zhaoyan Liu, Patricia L. Lucker, Brian Magill, Ali H. Omar, Jacques Pelon, Raymond R. Rogers, Travis D. Toth, Charles R. Trepte, Jean-Paul Vernier, David M. Winker, and Stuart A. Young

Data sets

CALIPSO data and information National Aeronautics and Space Administration https://eosweb.larc.nasa.gov/project/calipso/calipso_table

SAGE II data and information National Aeronautics and Space Administration https://eosweb.larc.nasa.gov/project/sage2/sage2_table

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Short summary
We present the motivation for and the implementation of the version 4.1 nighttime 532 nm parallel-channel calibration of the CALIOP lidar. The accuracy of calibration is significantly improved by raising the molecular normalization altitude from 30–34 km to 36–39 km to substantially reduce stratospheric aerosol contamination. The new calibration procedure eliminates biases in earlier versions and leads to an improved representation of stratospheric aerosols.