CALIPSO 1064&thinsp;nm calibration biases inferred from wavelength-dependent signal attenuation by stratospheric aerosols

Kar, Jayanta; Vaughan, Mark A.; Damadeo, Robert P.; Kovilakam, Mahesh; Tackett, Jason L.; Trepte, Charles R.

doi:10.5194/amt-19-277-2026

Articles | Volume 19, issue 1

https://doi.org/10.5194/amt-19-277-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/amt-19-277-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 1

Research article

|

15 Jan 2026

Research article |

| 15 Jan 2026

CALIPSO 1064 nm calibration biases inferred from wavelength-dependent signal attenuation by stratospheric aerosols

Jayanta Kar, Mark A. Vaughan, Robert P. Damadeo, Mahesh Kovilakam, Jason L. Tackett, and Charles R. Trepte

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Cumulative views and downloads (calculated since 25 Jul 2025)

Month	HTML	PDF	XML	Total
Jul 2025	122	18	0	140
Aug 2025	422	12	12	446
Sep 2025	1,124	30	18	1,172
Oct 2025	100	40	22	162
Nov 2025	60	16	8	84
Dec 2025	80	46	10	136
Jan 2026	165	82	12	259
Feb 2026	130	46	18	194
Mar 2026	120	62	11	193
Apr 2026	128	55	15	198
May 2026	92	56	6	154
Jun 2026	24	11	4	39
Jul 2026	38	115	4	157
Aug 2026	29	13	19	61
Sep 2026	108	65	43	216
Oct 2026	128	49	38	215
Nov 2026	25	8	5	38

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Short summary

This paper assesses biases in the 1064 nm calibration of the Cloud Aerosol Lidar with Orthogonal Polarization (CALIOP) due to signal attenuation differences at 1064 and 532 nm caused by stratospheric aerosols. Multi-channel measurements from the Stratospheric Aerosol and Gas Experiment suggest the bias ranges from 1 %–2 % for background conditions to over 5 % for high aerosol loads. Implications for CALIOP 1064 nm extinction retrievals and cascading errors in multi-layer scenes are discussed.