Stratospheric trace gas analysis from ions - H2O and HNO3

Details Stratospheric trace gas analysis from ions - H2O and HNO3 Stratospheric trace gas analysis from ions - H2O and HNO3

Jul 1980

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980p%26ss...28..681a&link_type=abstract

Planetary and Space Science, vol. 28, July 1980, p. 681-685.

Computer Science

4

Atmospheric Composition, Gas Analysis, Nitric Acid, Stratosphere, Trace Elements, Water Vapor, Abundance, Atmospheric Models, Gas Mixtures, Ion Concentration

Scientific paper

A new method for stratospheric trace gas analysis based upon in situ ion composition measurements is presented. The strength of the method lies in its extremely high sensitivity which at present allows for detection limits of the order of 100-1000 molecules/cu cm, corresponding to volume mixing ratios of the order of 10 to the -15th to 10 to the -14th around 35 km altitude. The typical uncertainty of derived trace gas abundances is plus or minus a factor of about two. A disadvantage lies in the selectivity of the method which is restricted to trace gases having either large proton affinities, dipole moments or gas phase acidities. Analyses of water vapor and nitric acid vapor in the upper stratosphere are presented.

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