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Atmospheric and Oceanic Optics

2020 year, number 11

About the possibility of the conifers contribution to interannual CO2 variations in the atmosphere

B.G. Ageev1, V.A. Sapozhnikova1, A.N. Gruzdev2
1V.E. Zuev Institute of Atmospheric Optics of Siberian Branch of the Russian Academy of Science, Tomsk, Russia
2A.M. Obukhov Institute of Atmospheric Physics Russian Academy of Sciences, Moscow, Russia
Keywords: СО, cyclicity, annual tree-rings, conifers

Abstract

Analysis of the annual СО2 distribution in the gas samples vacuum-extracted from the tree-ring wood of several conifer discs has been performed. The results indicate that part of CO2 released by forest communities into the atmosphere can vary with a period of about 4 years. Two groups of trees were identified, in each the 4-year CO2 variations are approximately synchronous, and the variations in different groups are opposite in phase. Variations with periods in the vicinity of 2 and 4 years were revealed in the series of CO2 content in the atmospheric air.