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Atmospheric and Oceanic Optics

2019 year, number 12

Long-term trends in mass concentration of near-surface aerosol at Zvenigorod Research Station of A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences

A.N. Gruzdev, A.A. Isakov, P.P. Anikin
A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
Keywords: аэрозоль, массовая концентрация, линейный тренд, множественная линейная регрессия, автокорреляция данных, aerosol, mass concentration, linear trend, multiple linear regression, autocorrelation of data

Abstract

Estimates of seasonally dependent long-term trends in the mass concentration of near-surface aerosol based on the measurements at Zvenigorod Research Station of A.M. Obukhov Institute of Atmospheric Physics, Russian Academy of Sciences, in 1991-2018 are presented. The analysis was performed by the method of multiple linear regression taking into account data autocorrelation on long time scales. Statistically significant negative spring and summer trends were derived for 1991-2002 and 2013-2018, respectively; possible causes of the trends are discussed.