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

ID: 29215.0, MPI für Kernphysik / Physics of Atmospheric Molecular Processes
Chemical, microphysical, and optical properties of polar stratospheric clouds
Authors:Schreiner, J.; Voigt, C.; Weisser, C.; Kohlmann, A.; Mauersberger, K.; Deshler, T.; Kroger, C.; Rosen, J.; Kjome, N.; Larsen, N.; Adriani, A.; Cairo, F.; Di Donfrancesco, G.; Ovarlez, J.; Ovarlez, H.; Dornbrack, A.
Date of Publication (YYYY-MM-DD):2002-12-07
Title of Journal:Journal of Geophysical Research-Atmospheres
Journal Abbrev.:J. Geophys. Res.-Atmos.
Issue / Number:D5
Start Page:8313
End Page:8313
Sequence Number of Article:8313
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:[1] A balloonborne gondola for a comprehensive study of polar stratospheric clouds (PSCs) was launched on 25 January 2000 near Kiruna/Sweden. Besides an aerosol composition mass spectrometer, the gondola carried optical particle counters, two backscatter sondes, a hygrometer, and several temperature and pressure sensors. A mountain wave induced PSC was sampled between 20 and 23 km altitude. Strongly correlated PSC particle properties were detected with the different instruments. A large variability of particle types was measured in numerous PSC layers, and PSC development was followed for about two hours. Liquid ternary PSC layers were found at temperatures near the ice frost point. A large fraction of the sampled cloud layers consisted of nitric acid trihydrate (NAT) particles with a molar ratio H2O: HNO3 close to 3 at temperatures near and below the equilibrium temperature T-NAT. The median radius of the NAT particle size distribution was between 0.5 and 0.75 mum at concentrations around 0.5 cm(-3). Below the NAT layers and above T-NAT, thin cloud layers containing a few large particles with radii up to 3.5 mum coexisted with smaller solid or liquid particles. The molar ratio in this region was found to be close to two.
Free Keywords:polar stratospheric clouds; aerosol properties; ozone hole; nitric acid trihydrates; aerosol composition analysis
External Publication Status:published
Document Type:Article
Affiliations:MPI für Kernphysik/Group K. Mauersberger/Aerosols in Polar Stratospheric Clouds (J. Schreiner)
External Affiliations:MUniv Wyoming, Dept Atmospher Sci, Laramie, WY 82071 USA; Danish Meteorol Inst, Div Middle Atmospher Res, DK-2100 Copenhagen, Denmark; Ist Sci Atmosfera & Clima, Sez Roma, I-00133 Rome, Italy; Ente Nuove Tecnol Energia & Ambiente, Sez Clima, Casaccia Res Ctr, Rome, Italy; Meteorol Dynam Lab, F-91128 Palaiseau, France; Deutsch Zentrum Luft & Raumfahrt Oberpfaffenhofen, Inst Atmosphere Phys, Wessling, Germany
Identifiers:ISI:000181059500001 [ID No:1]
ISSN:0747-7309 [ID No:2]
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