Effect of Particles of the Junge Layer on the Length of Ozone Depletion Chains in the Atmosphereстатья
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Дата последнего поиска статьи во внешних источниках: 31 июля 2024 г.
Аннотация:This paper presents the results of calculations of the length of ozone destruction chains in the lowerstratosphere in HOx-, NOx-, and ClOx-catalytic cycles, taking into account heterogeneous chemical reactions(HCRs) involving particles of the Junge layer. Taking into account these reactions leads to a change inthe type of high-altitude profiles of the length of the chains in these cycles, calculated in the approximationof the absence of HCRs. At the lower boundary of the Junge layer, a degeneration of the chain destruction ofozone in the NOx cycle is observed, caused by a sharp decline in the concentrations of components of thisfamily due to the capture of N2O5 gas molecules. At the same time, there is an increase in the chain length inthe HOx cycle by more than an order of magnitude due to the decrease in the concentrations of OH and HO2radicals and, as a result, a decrease in the rate of chain breakage with their participation. At high altitudes, thelength of the ozone destruction chains, taking into account HCRs, on the contrary, are higher; this is due tothe acceleration of the destruction of O3 by chain carriers in HOx- and ClOx-cycles. The increase in their concentrationsis due to the reduced content of NO and NO2 in the air. The considered effect of HCR practicallydisappears at the upper boundary of the Young layer due to the evaporation of particles.