1. Centre for Oceanography and Atmospheric Science, School of Environmental Sciences, University of East Anglia, Norwich NR4 7TJ, U.K.
2. School of Environmental and Geographical Sciences, University of Nottingham Malaysia, 43500 Semenyih, Malaysia
3. Research Center for Environmental Changes, Academia Sinica, Taipei 11529, Taiwan
4. National Centre for Atmospheric Science, University of East Anglia, Norwich NR4 7TJ, U.K.
5. Department of Atmospheric Sciences, National Central University, Taoyuan 320, Taiwan
6. National Centre for Atmospheric Science, Department of Chemistry, University of Leicester, Leicester LE1 7RH, U.K.