Abstract
In recent years, the interest of cloud physics has shifted emphasis away from precipitation toward radiative properties as the increasing of global climate studies. Cloud Condensation Nuclei (CCN) are the aerosol particles that can form cloud droplets. There is “indirect effect” arises from the possible influence of anthropogenic CCN. The first is Twomey effect that the increase in cloud droplets number concentration could increase the multiple scattering within clouds thereby increasing cloud-top albedo. The second is Albrecht effect that the increase in cloud droplet concentration may also inhibit precipitation development, enhancing cloud lifetime and resulting in an increase in planetary shortwave albedo and possibly also in the atmospheric absorption of longwave radiation by the resultant increased atmospheric loading of liquid water and water vapor. CCN studies have been made for decades all over the world. In China, observations on CCN only were performed in 1983–1985 using a static thermal gradient CCN counter. The Bohai Gulf locates in the north of China. Around the gulf there are the North China industrial areas. The purpose of this paper is to present the observations of CCN over Bohai Gulf in the autumn of 2006.
Published Version
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