Relationship of pyrogenic NO2 emissions from wildfires in Russia with atmospheric blocking events
I.I. Mokhov1,2, S.A. Sitnov1, M.N. Tsidilina3, O.S. Voronova3
1A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
2LomonosovMoscow State University, Moscow, Russia
3State scientific Institution "Institute for Scientific Research of Aerospace Monitoring "AEROCOSMOS", Moscow, Russia
Keywords: nitrogen dioxide, wildfires, pyrogenic emission, atmospheric blocking
Abstract
Analysis of satellite and reanalysis data indicates a relationship between pyrogenic NO2 emissions and atmospheric blocking events. According to the estimates for the period 2001-2019, with an increase in the integral blocking index by 10%, the total NO2 emissions into the atmosphere during wildfires in Russia increase by 0.7 million tons. Against the background of a general decrease in 2001-2019 of pyrogenic NO2 emission, a statistically significant increase in the NO2 emission density per unit area by 23% was revealed. At the same time, a decrease in the total emission of NO2 during wildfires was noted in relation to the corresponding emissions of carbon monoxide and fine aerosol.
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