Articles | Volume 18, issue 16
https://doi.org/10.5194/amt-18-3897-2025
https://doi.org/10.5194/amt-18-3897-2025
Research article
 | 
18 Aug 2025
Research article |  | 18 Aug 2025

Evaluation of the operational MODIS cloud mask product for detecting cirrus clouds

Żaneta Nguyen Huu, Andrzej Z. Kotarba, and Agnieszka Wypych

Data sets

CALIPSO Lidar Level 25 km Cloud Layer, V4-20 NASA/LARC/SD/ASDC https://doi.org/10.5067/CALIOP/CALIPSO/LID_L2_05KMCLAY-STANDARD-V4-20

MODIS Atmosphere L2 Cloud Mask Product S. Ackerman et al. https://doi.org/10.5067/MODIS/MYD35_L2.061

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Short summary
Clouds affect Earth's energy balance, with high-altitude cirrus clouds contributing to atmospheric warming. While active satellite sensors are the most accurate for detecting cirrus clouds, they are not ideal for long-term studies. This study compares Moderate Resolution Imaging Spectroradiometer (MODIS) and Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) data, testing six MODIS methods, one MODIS-based test, and two International Satellite Cloud Climatology Project (ISCCP) tests. The all tests consolidation (ATC) was the most effective, achieving 72.98 % accuracy during daytime and 59.50 % at night, making it relatively accurate for creating a cirrus mask.
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