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The radiative effect of ice clouds depends on the surface roughness of ice crystals

The radiative effect of ice clouds depends on the surface roughness of ice crystals

Clouds have a considerable impact on the radiation balance in the earth-atmosphere system and consequently on climate. There is fairly little knowledge of the impact of clouds formed of ice crystals i.e. ice clouds. The present study carried out a comprehensive investigation of how the reflectivity of ice crystals depends on the unevenness of their surface. According to the results, roughness is a significant factor affecting the reflectivity of the crystals and subsequently the radiative effect of ice clouds.

More information:

Researcher Timo Nousiainen, tel. +358 50 441 5451, timo.nousiainen@fmi.fi

Collier, C.T., Hesse, E., Taylor, T., Ulanowski, Z., Penttilä, A. and Nousiainen, T. (2016): Effects of surface roughness with two scales on light scattering by hexagonal ice crystals large compared to the wavelength: DDA results. J. Quant. Spectros. Radiat. Transfer, 182, 225-239.

http://www.sciencedirect.com/science/article/pii/S0022407316300802


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