title: Heterogeneous reaction probabilities, solubilities, and the physical state of cold volcanic aerosols.
abstract: On 19 January 1992, heterogeneous loss of HNO(3), ClNO(3), and HCl was observed in part of the Mount Pinatubo volcanic cloud that had cooled as a result of forced ascent. Portions of the volcanic cloud froze near 191 kelvin. The reaction probability of ClNO(3) and the solubility of HNO(3) were close to laboratory measurements on liquid sulfuric acid. The magnitude of the observed loss of HCl suggests that it underwent a heterogeneous reaction. Such reactions could lead to substantial loss of HCl on background sulfuric acid particles and so be important for polar ozone loss.
authors.forename: O
authors.initials: O
authors.lastname: Toon
authors.forename: E
authors.initials: E
authors.lastname: Browell
authors.forename: B
authors.initials: B
authors.lastname: Gary
authors.forename: L
authors.initials: L
authors.lastname: Lait
authors.forename: J
authors.initials: J
authors.lastname: Livingston
authors.forename: P
authors.initials: P
authors.lastname: Newman
authors.forename: R
authors.initials: R
authors.lastname: Pueschel
authors.forename: P
authors.initials: P
authors.lastname: Russell
authors.forename: M
authors.initials: M
authors.lastname: Schoeberl
authors.forename: G
authors.initials: G
authors.lastname: Toon
authors.forename: W
authors.initials: W
authors.lastname: Traub
authors.forename: F P
authors.initials: FP
authors.lastname: Valero
authors.forename: H
authors.initials: H
authors.lastname: Selkirk
authors.forename: J
authors.initials: J
authors.lastname: Jordan