Chemical Analysis of Polar Stratospheric Cloud Particles

A balloon-borne gondola carrying a particle analysis system, a backscatter sonde, and pressure and temperature sensors was launched from Kiruna, Sweden, on 25 January 1998. Measurements within polar stratospheric cloud layers inside the Arctic polar vortex show a close correlation between large back...

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Bibliographic Details
Published in:Science
Main Authors: Schreiner, Jochen, Voigt, Christiane, Kohlmann, Andreas, Arnold, Frank, Mauersberger, Konrad, Larsen, Niels
Format: Article in Journal/Newspaper
Language:English
Published: American Association for the Advancement of Science (AAAS) 1999
Subjects:
Multidisciplinary
Arctic
Kiruna
Online Access:http://dx.doi.org/10.1126/science.283.5404.968
https://syndication.highwire.org/content/doi/10.1126/science.283.5404.968
Description
Summary:A balloon-borne gondola carrying a particle analysis system, a backscatter sonde, and pressure and temperature sensors was launched from Kiruna, Sweden, on 25 January 1998. Measurements within polar stratospheric cloud layers inside the Arctic polar vortex show a close correlation between large backscatter ratios and enhanced particle-related water and nitric acid signals at low temperatures. Periodic structures in the data indicate the presence of lee waves. The H 2 O/HNO 3 molar ratios are consistently found to be above 10 at atmospheric temperatures between 189 and 192 kelvin. Such high ratios indicate ternary solution particles of H 2 O, HNO 3 , and H 2 SO 4 rather than the presence of solid hydrates.

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