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          Institute: MPI für Kernphysik     Collection: Physics of Atmospheric Molecular Processes     Display Documents

ID: 277804.0, MPI für Kernphysik / Physics of Atmospheric Molecular Processes
Composition analysis of liquid particles in the Arctic stratosphere under synoptic conditions
Authors:Weisser, C.; Mauersberger, Konrad; Schreiner, Jochen; Larsen, N.; Cairo, F.; Adriani, A.; Ovarlez, J.; Deshler, T.
Research Context:Arctic Stratosphere
Date of Publication (YYYY-MM-DD):2006-03-01
Title of Journal:Atmospheric Chemistry and Physics
Issue / Number:3
Start Page:689
End Page:696
Copyright:© 2006 Author(s)
Review Status:not specified
Audience:Experts Only
Abstract / Description:Synoptic scale polar stratospheric clouds (PSCs) that formed without the presence of mountain lee waves were observed in early December 2002 from Kiruna/Sweden using balloon-borne instruments. The physical, chemical, and optical properties of the particles were measured. Within the PSC solid particles existed whenever the temperature was below the equilibrium temperature for nitric acid trihydrate and liquid particles appeared when the temperature fell below an even lower threshold about 3 K above the frost point with solid particles still present. The correlation of liquid supercooled ternary solution aerosols with local temperatures is a pronounced feature observed during this flight; average molar ratios H2O/HNO3 were somewhat higher than predicted by models. In addition HCl has been measured for the first time in liquid aerosols. The chlorine isotope signature served as a unique tool to identify unambiguously HCl dissolved in STS particles. Within a narrow temperature range of about three degrees above the frost point, the measured average amount of HCl in liquid particles is below 1 weight%.
Free Keywords:Arctic stratosphere
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group K. Mauersberger/Ozone Isotope Research (K. Mauersberger)
External Affiliations:Danish Meteorological Institute, Copenhagen, Denmark
Institute for Atmospheric Science and Climate, Consiglio Nazionale delle Ricerche, Rome, Italy
Institute for Interplanetary Space Physics, Consiglio Nazionale delle Ricerche, Rome, Italy
Laboratoire de Meteorologie Dynamique, Ecole Polytechnique, Palaiseau, France
University of Wyoming, Laramie, Wyoming, USA
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