Reconstruction and prediction of long‐period variations of the ozonosphere using ozonometric and dendrochronological data

There exists significant correlation between long‐period variations in the total ozone content and the annual ring density chronologies of coniferous trees, especially spruce. This is caused by the response of the tree ecosystem to systematic deviations of the UV‐B solar radiation from the climatic norm. The total ozone content indices have been reconstructed several centuries back for some Eurasian regions. A 30‐year prediction of the ozonosphere development over Switzerland and the lower reaches of the Ob river has been made.