Statistical analysis for parameters of specularly reflective layers in high-level clouds over Western Siberia based on MODIS data
A.V. Skorokhodov, A.V. Konoshonkin
V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
Keywords: specular reflective layer, high-level cloud, oriented particle, satellite data, statistical characteristics
Abstract
The approbation results for the algorithm of detecting specularly reflecting layers in high-level clouds based on passive satellite data are presented. We consider cirrus clouds with an optical thickness of less than 5 and a top height of more than 8300 m consisting of horizontally oriented ice crystals, observed over the territory of Western Siberia from 2006 to 2007. The technique for detecting specularly reflecting layers in high-level clouds is described and the statistical analysis of their parameters is performed on the basis of spectroradiometer MODIS satellite data. We discuss the seasonal and latitudinal properties of the parameters of considered clouds over Western Siberia..The typical values of the area, top height, reflection ratio, and effective emissivity of specularly reflecting layers over different latitudinal zones of the target region were estimated for the first time.
|
