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Atmospheric and Oceanic Optics

2019 year, number 1

Observations of the formaldehyde integral content in the lower troposphere in urban agglomerations of Moscow and Tomsk using DOAS technique

I.I. Bruchkouski1, A.N. Borovski2, A.V. Dzhola2, N.F. Elansky2, O.V. Postylyakov2, O.E. Bazhenov3, O.A. Romanovskii3, S.A. Sadovnikov3, Y. Kanaya4
1National Ozone Monitoring Research and Educational Center, Belarusian State University, 4, Nezavisimosti avenue, 2200301, Minsk, Republic of Belarus
2A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Pyzhevsky per., 3, 119017, Moscow, Russia
3V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, 1, Academician Zuev square, Tomsk, 634021, Russia
4Japan Agency for Marine-Earth Science and Technology, 3173-25 Showa-machi, Kanazawa-ku, Yoko-hama, Kanagawa 236-0001, Japan
Keywords: формальдегид, HCHO, дифференциальная спектроскопия, дистанционное зондирование, пограничный слой атмосферы, Звенигородская научная станция, Сибирская лидарная станция, formaldehyde, differential spectroscopy, remote sensing, atmospheric boundary layer, Zvenigorod scientific station, Siberian lidar station

Abstract

Regular measurements of the formaldehyde integral content (IC) in the lower troposphere have been carried out in the area of influence of the Moscow urban agglomeration (Zvenigorod scientific station - ZSS) and in the southeastern part of Tomsk (Siberian lidar station - SLS) since 2009. The paper briefly describes the equipment and measurement techniques and presents the first results of the measurements. The excess of the mean level of the formaldehyde content at the ZSS above its level at Tomsk is shown. The most probable cause of higher values of formaldehyde during the east winds at the ZSS is the polluted Moscow air. According to the observations in Tomsk, the possible influence of polluted urban air on the formaldehyde content appears at temperatures greater than 25°С. According to observations at both stations, the positive dependence of the formaldehyde content on the air temperature was revealed.