The Antarctic ozone depletion caused by Erebus volcano gas emissions

Heterogeneous chemical reactions releasing photochemically active molecular chlorine play a key role in Antarctic stratospheric ozone destruction, resulting in the Antarctic ozone hole. Hydrogen chloride (HCl) is one of the principal components in these reactions on the surfaces of polar stratospher...

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Bibliographic Details
Published in:Atmospheric environment Vol. 122. P. 393-399
Corporate Author: Томский государственный университет Физический факультет Научные подразделения ФФ
Other Authors: Zuev, Vladimir V., Savelieva, Ekaterina S., Gerasimov, Vladislav V., Zueva, N. E.
Format: Article
Language:English
Subjects:
Online Access:http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000535927
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245 1 4 |a The Antarctic ozone depletion caused by Erebus volcano gas emissions  |c V. V. Zuev, N. E. Zueva, E. S. Savelieva, V. V. Gerasimov 
504 |a Библиогр.: с. 398-399 
520 3 |a Heterogeneous chemical reactions releasing photochemically active molecular chlorine play a key role in Antarctic stratospheric ozone destruction, resulting in the Antarctic ozone hole. Hydrogen chloride (HCl) is one of the principal components in these reactions on the surfaces of polar stratospheric clouds (PSCs). PSCs form during polar nights at extremely low temperatures (lower than −78 °C) mainly on sulfuric acid (H2SO4) aerosols, acting as condensation nuclei and formed from sulfur dioxide (SO2). However, the cause of HCl and H2SO4 high concentrations in the Antarctic stratosphere, leading to considerable springtime ozone depletion, is still not clear. Based on the NCEP/NCAR reanalysis data over the last 35 years and by using the NOAA HYSPLIT trajectory model, we show that Erebus volcano gas emissions (including HCl and SO2) can reach the Antarctic stratosphere via high-latitude cyclones with the annual average probability View the MathML source of at least ∼0.235 (23.5%). Depending on Erebus activity, this corresponds to additional annual stratospheric HCl mass of 1.0-14.3 kilotons (kt) and SO2 mass of 1.4-19.7 kt. Thus, Erebus volcano is the natural and powerful source of additional stratospheric HCl and SO2, and hence, the cause of the Antarctic ozone depletion, together with man-made chlorofluorocarbons. 
653 |a озоновый слой 
653 |a Эребус, гора 
653 |a вулканические газы 
655 4 |a статьи в журналах  |9 879358 
700 1 |a Zuev, Vladimir V.  |9 565776 
700 1 |a Savelieva, Ekaterina S.  |9 443463 
700 1 |a Gerasimov, Vladislav V.  |9 102911 
700 1 |a Zueva, N. E.  |9 392176 
710 2 |a Томский государственный университет  |b Физический факультет  |b Научные подразделения ФФ  |9 107954 
773 0 |t Atmospheric environment  |d 2015  |g Vol. 122. P. 393-399  |x 1352-2310 
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856 7 |u http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000535927 
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