Publication

Application of PIXE technique to studies on global warming/cooling effect of atmospheric aerosols

Publication, 2002

Outline

M. Kasahara, R. Höller, S. Tohno, Y. Onishi, C. Ma - Application of PIXE technique to studies on global warming/cooling effect of atmospheric aerosols - NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIO NS WITH MATERIALS AND ATOMS, Vol. 189, No. 1, 2002, pp. 204-208

Abstract

During the last decade,the importance of global warming has been recognized worldwide. Atmospheric Aerosols play an important role in the global warming/cooling effects. The physicochemical properties of aerosol particles are fundamental to understanding such effects. In this study,the PIXE technique was applied to measure the average chemical properties of aerosols. Micro-PIXE was also applied to investigate the mixing state of the individual Aerosol particle. The chemical composition data were used to estimate the optical properties of aerosols. The average values of aerosol radiative forcing were 1.53 w/m2 in Kyoto and þ3.3 w/m2 in Nagoya,indicating cooling and warming effects respectively. The difference of radiative forcing in the two cities may be caused by the large difference in chemical composition of aerosols.