title: Studies of polar stratospheric cloud formation.
abstract: Stratospheric ozone depletion was first reported in 1985. Early on, researchers identified polar stratospheric clouds (PSCs) as being important in chemistry related to ozone depletion. PSCs exist as crystalline water-ice particles (type II), and as crystalline (type Ia) or liquid (type Ib) particles stable above the water-ice frost point. Uncertainty remains concerning the composition and formation mechanism of the most common PSC, type Ia. Here, we consider likely formation mechanisms for type Ia PSCs.
authors.affiliation: Department of Chemistry and Biochemistry and CIRES, University of Colorado, Boulder, Colorado 80309, USA.
authors.forename: A J
authors.initials: AJ
authors.lastname: Prenni
authors.forename: M A
authors.initials: MA
authors.lastname: Tolbert
mesh_terms: D001272:Atmosphere; D003460:Crystallization; D007053:Ice; D010126:Ozone
chemical_list: D007053:Ice; D010126:Ozone