Cyclic variations of gas components in tree-ring chronologies as response to climatic cycles

[摘要] Vacuum-extracted gas samples from tree-ring wood of stems and large roots of some conifer species (of Tomsk oblast) are studied using a photoacoustic laser gas analysis. The retrieved CO2, (CO2+H2O) chronologies are analyzed by spectral and cross-spectral analysis methods. A quasi-cyclic character of variations of the chronologies has been revealed, which is probably due to changes in climatic conditions and solar activity.

[发布机构] Federal State Budget Institution of Science, V.E. Zuev Institute of Atmospheric Optics, Siberian Branch of the Russian Academy of Sciences, Academician Zuev sq.1, Tomsk; 634055, Russia^1;Federal State Budget Institution of Science, A.M. Obukhov Institute of Atmospheric Physics of the Russian Academy of Sciences, Pyzhevskii Lane 3, Moscow; 119017, Russia^2

[效力级别] 计算机科学

[关键词] Climatic conditions;Climatic cycles;Conifer species;Cross-spectral analysis;Cyclic variations;Gas component;Solar activity;Tree-ring chronologies