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Автор Pueschel, R. F.
Автор Ferry, G. V.
Автор Snetsinger, K. G.
Автор Goodman, J.
Автор Dye, J. E.
Автор Baumgardner, D.
Автор Gandrud, B. W.
Дата выпуска 1992
dc.description The NASA ER‐2 aircraft flew on January 24, 1989, from Stavanger to Spitsbergen, Norway, at the 430–440 K potential temperature surface (19.2–19.8 km pressure altitude). Aerosols were sampled continuously by an optical particle counter (PMS‐FSSP300) for concentration and size analyses, and during five 10‐min intervals by four wire and one replicator impactor for concentration, size, composition, and phase analyses. During sampling, the air saturation of H<sub>2</sub>O with respect to ice changed from 20% to 100%, and of HNO<sub>3</sub> with respect to nitric acid trihydrate (NAT) from subaturation to supersaturation. Data from both instruments indicate a condensation of hydrochloric acid and, later, nitric acid on the background aerosol particles as the ambient temperature decreases along the flight track. This heterogeneous nucleation mechanism generates type I polar stratospheric cloud particles of 10‐fold enhanced optical depth, which could play a role in stratospheric ozone depletion.
Формат application.pdf
Копирайт Copyright 1992 by the American Geophysical Union.
Тема Polar Ozone
Тема ATMOSPHERIC COMPOSITION AND STRUCTURE
Тема Aerosols and particles
Тема Cloud physics and chemistry
Тема Middle atmosphere: composition and chemistry
Тема Pollution: urban and regional
Тема OCEANOGRAPHY: BIOLOGICAL AND CHEMICAL
Тема Aerosols
Тема PALEOCEANOGRAPHY
Тема Aerosols
Название A case of Type I polar stratospheric cloud formation by heterogeneous nucleation
Тип article
DOI 10.1029/91JD02352
Electronic ISSN 2156-2202
Print ISSN 0148-0227
Журнал Journal of Geophysical Research: Atmospheres
Том 97
Первая страница 8105
Последняя страница 8114
Выпуск D8
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