Article

Journal of Atmospheric Chemistry

, Volume 1, Issue 2, pp 151-157

Calculations of the temperature dependence of the NO2 photodissociation coefficient in the atmosphere

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

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Abstract

The photodissociation coefficient, J NO2 of NO2 in the atmosphere was calculated at 235 and 298 K using the measured temperature dependences of the absorption cross-sections and quantum yields. These calculations gave a ratio J NO2(298 K)/J NO2(235 K)=1.155±0.010 which is only weakly dependent on altitude, surface albedo and solar zenith angle.

Key words

Atmosphere photolysis nitrogen dioxide photodissociation coefficient temperature effect