Emeritus professor of the University of Tokyo, contributing to researches for atmospheric radiative transfer theory, remote sensing of aerosol and cloud microphysics, and modeling study of anthropogenic aerosol effects on the earth’s climate. Served as Director of Center for Climate System Research, University of Tokyo; Chief Scientist of JAXA Earth Observation Research Center; President of IAMAS International Radiation Commission (IRC), Secretary General of IAMAS Bureau; Member of Science Council of Japan, and others. IPCC lead authors for TAR, AR5, and Special Report for aviation effect. Awarded Japan Purple Ribbon Medal; Japan Order of the Sacred Treasure, Gold Rays; IRC Gold Medal; AGU Kaufman Award, and others.