Physics
Scientific paper
Aug 2001
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001esasp.471..251b&link_type=abstract
In: 15th ESA Symposium on European Rocket and Balloon Programmes and Related Research, 28 - 31 May 2001, Biarritz, France. Ed.:
Physics
Earth Stratosphere, Chlorine
Scientific paper
The new mechanism of active chlorine accumulation in the Earth polar stratosphere is suggested. The mechanism provides chlorine increase due to conversion of less steady chlorine nitrate ClONO2 into the more stable denitrogen pentoxide N2O5 and chlorine oxide ClO. The analytical solution for the equilibrium concentrations of chemical species participating in this mechanism has been obtained. Its analysis on the base of calculated radiation spectrum for different vertical distribution of cloudiness, temperature and stratospheric ozone was done. It was shown that the solution has special "resonance" conditions for the mechanisms functioning. Some specific areas and factors which facilitate ClO increase are found. These are the regions with low temperature above the stratospheric clouds, when the Sun is under horizon and the regions under the clouds when the Sun is above horizon. The estimations for absolute values of ClO increasing strongly depend on the conditions under which the proposed mechanism is acting.
Belikov Yu. E.
Moeseyenko K. B.
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