Articles | Volume 13, issue 8
https://doi.org/10.5194/amt-13-4539-2020
https://doi.org/10.5194/amt-13-4539-2020
Research article
 | 
25 Aug 2020
Research article |  | 25 Aug 2020

CALIOP V4 cloud thermodynamic phase assignment and the impact of near-nadir viewing angles

Melody A. Avery, Robert A. Ryan, Brian J. Getzewich, Mark A. Vaughan, David M. Winker, Yongxiang Hu, Anne Garnier, Jacques Pelon, and Carolus A. Verhappen

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Latest update: 04 Mar 2024
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Short summary
CALIOP data users will find more cloud layers detected in V4, with edges that extend further than in V3, for an increase in total atmospheric cloud volume of 6 %–9 % for high-confidence cloud phases and 1 %–2 % for all cloudy bins, including cloud fringes and unknown cloud phases. In V4 there are many fewer cloud layers identified as horizontally oriented ice, particularly in the 3° off-nadir view. Depolarization at 532 nm is the predominant parameter determining cloud thermodynamic phase.