An overview of papers devoted to studies of the stratospheric aerosols due to Pinatubo eruption presented at the 16th ILRC (Massachusetts, USA, July 20—24, 1992) is given in this paper. The mass of gases and aerosol substances erupted from the Mt. Pinatubo volcano exceeds the powers of any recently observed eruptive clouds and can cause essential climatic changes on the global scale.