Formation of ice cloud from Asian dust particles in the upper troposphere

Toshiyuki Murayama

doi:10.1117/12.417048

13 February 2001 Formation of ice cloud from Asian dust particles in the upper troposphere

Toshiyuki Murayama

Proceedings Volume 4153, Lidar Remote Sensing for Industry and Environment Monitoring; (2001) https://doi.org/10.1117/12.417048
Event: Second International Asia-Pacific Symposium on Remote Sensing of the Atmosphere, Environment, and Space, 2000, Sendai, Japan

Abstract

We sometimes observed ice clouds (cirrus) that coexisted with an Asian-dust layer in the upper troposphere by a polarization lidar during Asian dust events over Tokyo, Japan in the springs of 1998 to 2000. Here we present such lidar observations during spring 2000. We discussed qualitatively a mechanism of the formation of the cirrus clouds combined with imageries of Geostationally Meteorological Satellite 5 (GMS-5) and the nearest radiosonde data. The water-vapor channel imagery indicates that the cirms was formed or enhanced over a high mountain area in the middle of Japan. The cirrus that we observed over Tokyo was a part of the cirrus flowed by the westerly wind. Asian dust particle seems to act as ice nuclei in the upper troposphere if the air mass merged with a humid air mass during the transportation.

Citation Download Citation

Toshiyuki Murayama "Formation of ice cloud from Asian dust particles in the upper troposphere", Proc. SPIE 4153, Lidar Remote Sensing for Industry and Environment Monitoring, (13 February 2001); https://doi.org/10.1117/12.417048

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