Preliminary Study for the mechanism of yellow dust emission and the health effects of adsorbed pollutants on dust particles

Research Project , Research Report 2002

Kazuhiko TAKEUCHI Professor, Graduate School of Agricultural and Life Sciences, The Univ. of Tokyo
Teruyuki NAKAJIMA Professor, Center for Climate System Research, The Univ. of Tokyo
Ryutaro OHTSUKA Professor, Graduate School of Medical Sciences, The Univ. of Tokyo(Research Partners)
Soon-chan YOON Assoc. Dean of Planning, College of Natural Sciences, Seoul National University, Korea
Yoonshin KIM Professor, Department of Occupational and Environmental Medicine, Hayang University, Korea
Xikang CHEN Professor, Institute of System Science, Academy of Mathematics and System Science, Academia Sinica, Zhongguancum, China

Abstract

The escalated hazards caused by yellow dust, associated with environmental degradation in northern part of China, have attracted increasing attention in recent years. Dust has various direct impacts on environment and human society: Dust storms have killed hundreds of people in the recent decade; The suspended particulates is harmful to the human respiratory system. On the other hand, dust neutralizes the acidity of the rainfall in East Asia. To evaluate this complex phenomenon, the series of dust events, such as dust emission, transportation, deposition and impact, should be understood comprehensively. This study revealed the vulnerability to wind erosion for various environments in arid and semi-arid regions in East Asia, and the climatological fluctuation in the area that can clearly explain the recent increase in the aeolian dust in the proximal regions. The countermeasures to the yellow dust phenomena of long-term basis can be established by integrating these results.

Keywords:

yellow dust, aerosol, wind erosion, transportation, pollution, mortality