TY JOUR TI Aerosol Injections Into the Stratosphere by Volcanic Eruptions Over 225 Years KW Large volcanic eruptions KW stratosphere KW volcanic explosivity index KW maximum plume altitude KW stratospheric aerosol layer JO Russian Journal of Earth Sciences AU Zuev, V.V. AU Savelieva, E.S. PY 2026 IS 26 PB Geophysical Center of the Russian Academy of Sciences