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首页> 外文期刊>Tellus, Series B. Chemical and Physical Meteorology >The influence of the organic aerosol component on CCN supersaturation spectra for different aerosol types
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The influence of the organic aerosol component on CCN supersaturation spectra for different aerosol types

机译：有机气溶胶组分对不同气溶胶类型的CCN过饱和谱的影响

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摘要

This paper describes the effect of the presence of water-soluble organic compounds (WSOC) in aerosol particles on the aerosol critical supersaturation as defined by the Kohler theory and on cloud condensation nuclei (CCN) number concentration. Taking into account both the soluble mass increase and the surface tension depression due to WSOC, we calculated a substantial decrease of the aerosol critical supersaturation, which results in a large increase in CCN number concentration. CCN supersaturation spectra were computed for three different aerosol types: marine, rural and urban. The increase of CCN number concentration in the presence of WSOC (with respect to the case when only the inorganic aerosol compounds are considered) varies with aerosol type, with an increase up to 13% in the marine case, up to 97% in the rural case, and up to 110% in the urban case, for the supersaturation range typical of atmospheric conditions.
机译：本文描述了气溶胶颗粒中水溶性有机化合物（WSOC）的存在对科尔勒理论定义的气溶胶临界过饱和度和云凝结核（CCN）数浓度的影响。考虑到由于WSOC引起的可溶性物质增加和表面张力降低，我们计算出气溶胶临界过饱和度显着降低，这导致CCN数浓度大大增加。计算了三种不同气溶胶类型的CCN过饱和光谱：海洋，农村和城市。在存在WSOC的情况下，CCN数量浓度的增加（相对于仅考虑无机气溶胶化合物的情况而言）随气溶胶类型的不同而变化，在海洋情况下，高达13％，在农村地区，高达97％情况下，对于典型的大气条件过饱和范围，在城市情况下可达110％。

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