ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa


Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa, 2021, Vol. 18, No. 3, pp. 279-287

Comparison of satellite active and passive observations of specularly reflecting layers in the high-level clouds

A.V. Skorokhodov 1 , A.V. Konoshonkin 1 
1 V.E. Zuev Institute of Atmospheric Optics SB RAS, Tomsk, Russia
Accepted: 12.04.2021
DOI: 10.21046/2070-7401-2021-18-3-279-287
The results of comparing satellite active and passive observations of specularly reflecting layers in the high-level clouds are presented. For this, CALIOP (CALIPSO) remote sensing records for 2006 and 2007 obtained at the off-nadir scan angle 0.3° and MODIS (Aqua) data products are used. The threshold values for the reflection and effective emissivity ratios of the clouds are found dividing them into two groups: a) with randomly located ice crystals; b) with particles predominantly oriented in the horizontal plane. For the study period, the prevailing orientation of crystalline particles (chaotic or predominantly oriented) in various types of high-level clouds over the Tomsk region was determined. The results and prospects of identifying clouds with specularly reflecting layers in full-size MODIS images are discussed.
Keywords: high-level clouds, particle orientation, solar radiation, satellite data, cloud characteristics, CALIPSO, MODIS
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