On the stratospheric chemistry of hydrogen cyanide

Details On the stratospheric chemistry of hydrogen cyanide On the stratospheric chemistry of hydrogen cyanide

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006georl..3311806k&link_type=abstract

Geophysical Research Letters, Volume 33, Issue 11, CiteID L11806

Physics

8

Atmospheric Composition And Structure: Chemical Kinetic And Photochemical Properties, Atmospheric Composition And Structure: Middle Atmosphere: Composition And Chemistry, Atmospheric Composition And Structure: Middle Atmosphere: Constituent Transport And Chemistry (3334)

Scientific paper

HCN profiles measured by solar occultation spectrometry during 10 balloon flights of the JPL MkIV instrument are presented. The HCN profiles reveal a compact correlation with stratospheric tracers. Calculations with a 2D-model using established rate coefficients for the reactions of HCN with OH and O(1D) severely underestimate the measured HCN in the middle and upper stratosphere. The use of newly available rate coefficients for these reactions gives reasonable agreement of measured and modeled HCN. An HCN yield of ~30% from the reaction of CH3CN with OH is consistent with the measurements.

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