略語大辞典 [Geo] 25 PSC polar stratospheric cloud 極成層圏雲.polar stratospheric cloud; perturbs the chemistry of stratospheric O3 during winter; provides reactive surfaces that convert inorganic chlorine to a reactive form and nitrogen oxides to HNO3; sedimentation of PSC particles containing HNO3 leads 丸善「略語大辞典」JLogosID : 11856637