In Kronotsky Reserve continues erupting volcano Kizimen. WWF and volcanologists tell, can it be a powerful and prolonged eruption "cool" atmosphere.
In Kamchatka, about 30 active volcanoes, three of them — Shiveluch Karymsky and Kizimen — now under the special supervision of volcanologists. The Institute of Volcanology and Seismology previously noted increase in the overall activity of the Kamchatka volcanoes in the past five years, explaining the natural change of the periods of rest and activity. Confirmation of this was Kizimov eruption, which began in November last year. Volcano and today we get down on their slopes hot avalanches and throws many kilometers of poles gas mixture with a lot of ash.
Volcanic ash and gases entered the upper atmosphere, can stay there a year or more. The ashes of the solar radiation reflected back into space, thus reducing the air temperature at the earth's surface. In 1815, the eruption of Tambora in Indonesia to reduce the temperature of the surface air on the planet by 0.5 degrees Celsius. Volcanic activity may be the cause of cooling and by shielding effects of long-lived aerosols that volcano emits huge quantities during the eruption. Icelandic volcano Laki in 1783, released into the atmosphere about 100 million tons of sulfuric acid aerosols, reducing the surface temperature by 1 degree and affected the lives of not only the population of Iceland, but all of Europe. *
The impact of volcanoes on climate manifests itself not only in the air temperature drops. Aerosols and ash particles change the composition of air and can contribute to the formation of precipitation. "The study of snow crystals collected in the Northern Hemisphere, showed that about 95% of them in the central part of the found one solid core. In the formation of ice crystals are most effective clay particles and volcanic ash "- explains the process Jaroslav Ants, Ph.D., Deputy Director of IVS FED.
Scientists believe that Kizimen certainly affects the formation of the local climate. But to protect the planet from global warming, it can not. "The fact that these changes are long-term: the aerosol particles are deposited relatively quickly. The models used to calculate the change in climate, well reproduce the effects of eruptions. In this case, it is clear that volcanoes can not "make the weather" for a long time, the maximum — for 3-5 years. Then, the temperature returns to the same trend, because the concentration of atmospheric carbon dioxide, the main "culprit" warming continues to grow and these 3-5 years ", — said Alexei Kokorin, coordinator of WWF« Climate and energy. "
* The press release benefited from Article Ya.D.Muraveva "Volcanic eruptions and climate."
Since 1850, the burning of fossil fuels in the atmosphere has been thrown out of more than 300 billion tonnes of CO2. Still about half of this amount came from deforestation and other land use change.
Consequence of global climate change is an increasing number of natural disasters — a heavy snowfall, floods, droughts, floods, etc. descent
Solve the problem of the international community can only at the international level, limiting industrial emissions of CO2 into the atmosphere and stopping deforestation. But its contribution to stabilizing the climate can make any man, through economic use of electricity supplies and other essential items, the use of public transport instead of personal and reducing paper work.