Abstract
Abstract. The primary objective of this complex aerosol experiment was the measurement of microphysical, chemical, and optical properties of aerosol particles in the surface air layer and free atmosphere. The measurement data were used to retrieve the whole set of aerosol optical parameters, necessary for radiation calculations. Three measurement cycles were performed within the experiment during 2013: in spring, when the aerosol generation is maximal; in summer (July), when atmospheric boundary layer altitude and, hence, mixing layer altitude are maximal; and in late summer/early autumn, during the period of nucleation of secondary particles. Thus, independently obtained data on the optical, meteorological, and microphysical parameters of the atmosphere allow intercalibration and inter-complement of the data and thereby provide for qualitatively new information which explains the physical nature of the processes that form the vertical structure of the aerosol field.
Highlights
The climate change observed for already more than 1 decade is recognized by the whole global community
The measurement data show that aerosol and black carbon profiles are close in shape and agree with specific features of vertical variations which we have revealed earlier
The columnar concentrations determined from these profiles are close to the springtime average values of 1.64 and 0.18 mg m−2 for aerosol and black carbon, respectively, which we found earlier from results of regular aircraft measurements in the south of Western Siberia in 1999–2011 under clear-sky conditions
Summary
The climate change observed for already more than 1 decade is recognized by the whole global community. Despite the common recognition of this problem, there is no consensus on the role of human activity in the global climate change. The studies of Antarctic ice cores have shown that there were several periods of global warming for the last 650 000 years (Solomon et al, 2007) accompanied by an increase in the concentration of major greenhouse gases (CO2, CH4, and N2O). An important role of aerosols in climate changes is well established, the level of understanding of the indirect effect of aerosols in radiative changes remains very low. This fact complicates significantly the prediction of global changes in the Earth’s climate
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