Measurements and Parameterization of Atmospheric Ice Nuclei in Different Regions in China

Y Yin, H Jiang, K Chen, S Liu

The concentrations of ice nuclei (IN) in selected regions in China, including a relatively polluted urban site, a relative clean remote mountainous site, and a desert site in northwest China, were measured and analyzed by using a newly built static vacuum water vapor diffusion chamber. Parameterizations were developed based on measurements to represent the variations of IN concentration with temperature, supersaturation, and the number concentration of aerosol particles with size larger than 0.5μm. They can be applied to the surface of the desert, the relatively clean background areas and the polluted city regions.

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