云滴谱离散度对气溶胶间接效应影响的研究进展

Review of influence of cloud droplet spectral dispersion on aerosol indirect effects

气溶胶作为云凝结核(CCN)或者冰核(IN),通过改变云微物理属性可以间接地影响地气系统的辐射平衡及区域乃至全球水循环。最新研究结果表明,云滴谱离散度对气溶胶间接效应(包括第一及第二间接效应)有着重要的影响(简称为云滴谱离散度效应)。然而,在目前绝大多数天气、气候数值模式中并没有考虑云滴谱离散度效应。因此,本文主要从云滴谱离散度对气溶胶第一间接效应和第二间接效应影响的两方面入手,系统地回顾了国内外相关研究工作,并讨论了云滴谱离散度效应的不确定性,进一步指出减少该效应不确定性是未来需要关注的研究方向。

Atmospheric aerosols, serving as cloud condensation nuclei （CCN） or ice nuclei （IN）, can indirectly impact the radiative balance of Earth-Atmosphere system, hydrological cycle and climate change at regional and global scales. Recent studies show that the spectral dispersion of cloud droplet size distribution has an important influence on the first aerosol indirect effect and the second aerosol indirect effect （dispersion effects）. However, the dispersion effects related to aerosols have not been included in most numerical weather or climate models up to now. In this paper, we systematically review the dispersion effects on the first aerosol indirect effect and the second aerosol indirect effect, discuss the uncertainties induced by the spectral dispersion effect, and propose future research directions in this field.