Articles | Volume 11, issue 1
Atmos. Meas. Tech., 11, 633–649, 2018
https://doi.org/10.5194/amt-11-633-2018
Atmos. Meas. Tech., 11, 633–649, 2018
https://doi.org/10.5194/amt-11-633-2018
Research article
01 Feb 2018
Research article | 01 Feb 2018

Characterization of AVHRR global cloud detection sensitivity based on CALIPSO-CALIOP cloud optical thickness information: demonstration of results based on the CM SAF CLARA-A2 climate data record

Karl-Göran Karlsson and Nina Håkansson

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Short summary
Data from the high-sensitivity CALIOP cloud lidar onboard the CALIPSO satellite have been used to evaluate cloud amounts estimated from satellite imagery and, specifically, from the climate data record CLARA-A2. The main purpose has been to study the limit of how thin clouds that can be detected efficiently (i.e., detected at the 50 % level) in CLARA-A2 data and how this limit varies globally. The study revealed very large geographical differences in the cloud detection efficiency.