Volcanogenic Nanosized Carbon Aerosol in the Stratosphere
V. V. ZUEV, N. E. ZUEVA, P. K. KUTSENOGIY and E. S. SAVELYEVA
Institute of Monitoring of Climatic and Ecological Systems, Siberian Branch of the Russian Academy of Sciences, Pr. Akademicheskiy 10/3, Tomsk 634055 (Russia)
E-mail: vvzuev@imces.ru
Keywords: volcanic eruption, eruptive column, stratosphere, temperature, solar radiation, ozone depression, sulphuric acid aerosol, carbon particles
Pages: 81–86
Abstract
The temperature anomalies and long-term depressions of ozone in the stratosphere observed after large-scale volcanic eruptions are poorly explained from the point of view of modern ideas about composition of the stratospheric aerosol of the volcanogenic nature. However, such post-volcanic phenomena could occur in case when the aerosol comp its surface. The basic opportunity of forming nanosized carbon aerosol (less than 0.1 μm in size) in the stratosphere in case of powerful Plinian type volcanic eruptions is shown in the paper. Estimates of the amount and lifetime of these particles allow explaining long-term temperature anomalies and the ozone depression in the stratosphere after volcanogenic perturbations.
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