Publication Date:
2013-08-31
Description:
Absorption cross-sections for HNO3 and N2O5 have been measured in the wavelength region 220-450 nm, using a dual beam diode array spectrometer with a spectral resolution of 0.3 nm. The results for both compounds are in good agreement with recommended values at room temperature. However, the cross-sections of both HNO3 and N2O5 show a marked reduction with decreasing temperature in the range 295-233 K. The calculated photolysis rate of HNO3 at the low temperatures and high solar zenith angles characteristic of the polar winter and spring is significantly lower than previously estimated.
Keywords:
ENVIRONMENT POLLUTION
Type:
NASA. Goddard Space Flight Center, Ozone in the Troposphere and Stratosphere, Part 1; p 409-412
Format:
application/pdf
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