ISSN 2070-7401 (Print), ISSN 2411-0280 (Online)
Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa
CURRENT PROBLEMS IN REMOTE SENSING OF THE EARTH FROM SPACE

  

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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