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We present the results of a comparison of high-level cloud (HLC) episodes with different ice crystal orientations from EARLINET ground-based lidar measurements and MODIS satellite data for the period 2015-2022. Cloud particles with total attenuated backscatter values greater than 5-10-6m -1 -sr-1 are considered preferentially oriented in the horizontal plane if the volume linear depolarization coefficient is less than 0.1, and randomly oriented if it is greater than 0.4. The following parameters of HLC with different orientation of ice crystals were considered: optical thickness, effective particle radius, waterpath, cloud-top height, reflection ratio, and effective emissivity ratio. The results of comparing the features of HLC with different particle orientations from ground-based and satellite data are discussed. It was found that over Europe (as well as over Western Siberia) HLC with reflection ratios greater than 0.15 and effective emissivity ratios greater than 0.5 consist of preferentially oriented ice crystals in the horizontal plane. The typical values of HLC parameters with different particle orientations over Europe were found. We present the analysis results of HLC with specularly reflecting layers having anomalous values of reflection ratios and effective emissivity ratio.
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