Article

Journal of Atmospheric Chemistry

, Volume 3, Issue 2, pp 233-245

Measurement of the photodissociation coefficient of NO2 in the atmosphere: II, stratospheric measurements

  • S. MadronichAffiliated withDepartment of Chemistry, York University
  • , D. R. HastieAffiliated withDepartment of Chemistry, York University
  • , H. I. SchiffAffiliated withDepartment of Chemistry, York University
  • , B. A. RidleyAffiliated withDepartment of Chemistry, York University

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Abstract

The photodissociation coefficient of NO2, J NO 2, has been measured from a balloon platform in the stratosphere. Results from two balloon flights are reported. High Sun values of J NO 2 measured were 10.5±0.3 and 10.3±0.3×10-3 s-1 at 24 and 32 km respectively. The decrease in J NO 2 at sunset was monitored in both flights. The measurements are found to be in good agreement with calculations of J NO 2 using a simplified isotropic multiple scattering computer routine.

Key words

J NO 2 NO2 photolysis atmospheric photochemistry J NO 2 measurement