Distinguishing cirrus cloud presence in autonomous lidar measurements

Campbell, J. R.; Vaughan, M. A.; Oo, M.; Holz, R. E.; Lewis, J. R.; Welton, E. J.

doi:10.5194/amt-8-435-2015

Articles | Volume 8, issue 1

https://doi.org/10.5194/amt-8-435-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

https://doi.org/10.5194/amt-8-435-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 8, issue 1

Research article

|

27 Jan 2015

Research article |

| 27 Jan 2015

Distinguishing cirrus cloud presence in autonomous lidar measurements

J. R. Campbell, M. A. Vaughan, M. Oo, R. E. Holz, J. R. Lewis, and E. J. Welton

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Dec 2014	18	20	1	39
Jan 2015	46	43	2	91
Feb 2015	32	38	2	72
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Apr 2015	24	17	3	44
May 2015	10	14	2	26
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Month	HTML	PDF	XML	Total
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Aug 2014	21	22	0	43
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Oct 2014	5	11	0	16
Nov 2014	4	10	0	14
Dec 2014	18	20	1	39
Jan 2015	46	43	2	91
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Mar 2015	20	24	2	46
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Saved (final revised paper)

Latest update: 24 Apr 2026

Short summary

Digital thresholds based on 2012 CALIOP satellite lidar measurements are investigated for distinguishing cirrus cloud presence, including cloud top temperatures and heights combined with layer depolarization and phase and optical depths. A cloud top temperature of -37 C is found to exhibit the most stable performance, owing to it being the point of homogeneous liquid-water freezing. Depolarization and phase help but are mostly ambiguous at warmer temperatures where mixed-phase clouds propagate.