Variations in the ozone concentration in precipitation
V.G. Arshinova1, B.D. Belan1, V.A. Lapchenko2, E.V. Lapchenko2, T.M. Rasskazchikova1, D.E. Savkin1, T.K. Sklyadneva1, G.N. Tolmachev1, A.V. Fofonov1
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2T.I. Vyazemsky Karadag scientific station, Theodosius, Russia
Keywords: атмосфера, газ, воздух, вымывание, озон, осадки, примеси, удаление, atmosphere, gas, air, washout, ozone, precipitation, impurity, removal
Abstract
Changes in the ozone concentration during precipitation is studied on the basis of surface ozone monitoring data in Tomsk and on the Karadag. It is revealed that these changes can be both positive and negative. The maximal ozone content jumps are observed during frontal precipitations. During air mass precipitation, the sign and magnitude of the changes are defined by the daily ozone cycle. The analysis showed coincidence between an increase in the ozone concentration during precipitation with its increase in the daily cycle in 59% of cases in Tomsk and in 63% of cases on the Karadag. The coincidence of a decrease in the O3 concentration during precipitation with the ozone decrease wave in the daily cycle is observed even more often, in 85% of cases in Tomsk and in 79% of cases on the Karadag. Based on the aircraft sounding data, ozone sink from the boundary air layer is observed in some cases when the temperature stratification is changing to neutral in precipitation.
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