The role of tropical stratosphere volcanic heating in appearance of heat centers in the Arctic regions
V.V. Zuev, N.E. Zueva, E.S. Saveljeva, A.P. Shelekhov, E.A. Shelekhova
Institute of Monitoring of Climatic and Ecological Systems of the Siberian Branch of the Russian Academy of Sciences, 634055, Tomsk, 10/3, Academichesky ave
Keywords: volcanic eruptions, black carbon, stratosphere, heat centers, Chukotka Peninsula, Arctic Ocean ice cover
Abstract
There are systematic temperature increases in stratosphere relative to long-term standard after major volcanic eruptions. The temperature anomalies in stratosphere of tropical belt cause the appearance of heat centers in the Arctic region, which in turn significant reduces ice cover boundaries in the Arctic Ocean. We analyzed the influence of the new temperature contrasts in the stratosphere of the Northern Hemisphere on the climate change in the Arctic regions using the atmospheric general circulation spectral model of intermediate complexity. We investigate the influence of major volcanic eruptions on the temperature changes in tropical stratosphere and surface temperature in the Chukotka Peninsula region. All major volcanogenic aerosol perturbations of stratosphere response within 10 years to surface temperature increases in the heat center on Chukotka Peninsula is showed.
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