The Antarctic ozone depletion caused by Erebus volcano gas emissions

Зуев, В. В.; Zueva, N. E.; Savelieva, Ekaterina S.; Gerasimov, V. V.

doi:10.1016/j.atmosenv.2015.10.005

Cited by 17 publications

(6 citation statements)

References 27 publications

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“…The polar stratospheric O 3 loss is associated with heterogeneous chemical reactions on polar stratospheric cloud (PSC) (Austin & Wilson, 2006; Ivy et al., 2017; Solomon, 1999; Xia, Hu, Zhang, et al., 2021). Over the polar regions, H 2 O adsorbs onto the surface of sulfate aerosols to condense into PSC particles, which provides a heterogeneous surface for O 3 loss cycles (e.g., Cl and bromine radicals (Br)) (Ivy et al., 2017; Tritscher et al., 2021; Zuev et al., 2015). While considering that Cl and Br are rather stable in the stratosphere, the polar O 3 hole is also influenced by dynamical processes, which causes the annual variability in the size of the O 3 hole, especially closer to the South Pole (Solomon, 1999; Stone et al., 2017).…”

Section: Introductionmentioning

confidence: 99%

Stratospheric Aerosol and Ozone Responses to the Hunga Tonga‐Hunga Ha'apai Volcanic Eruption

Lou

Huang

et al. 2023

Geophysical Research Letters

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The Hunga Tonga‐Hunga Ha'apai (HTHH) eruption on 15 January 2022 was one of the most explosive volcanic events of the 21st century so far. According to satellite‐based measurements, 0.4 Tg of sulfur dioxide (SO2) was injected into the stratosphere during the eruption. By using observations and model simulations, here we investigate changes in the chemical compositions of the stratosphere 1 year after the HTHH eruption and examine the key physical and chemical processes that influence the ozone (O3) concentrations. Injected SO2 was oxidized into sulfate during the first 2 months, and transported from the tropics to the Antarctic by the Brewer‐Dobson circulation within 1 year. In mid‐to‐low latitudes, enhanced sulfate aerosol increased O3 concentrations in the middle stratosphere but declined in the lower stratosphere. In addition to the chemical processes, sulfate aerosols also reduced polar low‐stratospheric O3 concentrations through enhanced Antarctic upwelling anomalies.

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Section: Introductionmentioning

confidence: 99%

Stratospheric Aerosol and Ozone Responses to the Hunga Tonga‐Hunga Ha'apai Volcanic Eruption

Lou

Huang

et al. 2023

Geophysical Research Letters

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“…In this case, the air mass forward trajectory is limited by the polar vortex edge and is completely located in the polar region, in addition, ascending prevails in the vertical direction of movement. 20 In the case of the eruptions under consideration (Fig. 2, a, c, d, e), it is obvious that the volcanic aerosol was outside the polar vortex, the dynamic barrier along the vortex edge prevents their propagation into the polar region, and downward movement prevails.…”

Section: Resultsmentioning

confidence: 94%

On the role of extratropical volcanic eruptions in Arctic ozone depletion

Зуев

Savelieva

Krupchatnikov

et al. 2022

28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics

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Volcanic eruptions can contribute to polar ozone depletion when volcanic aerosol propagates into the tropical or polar stratosphere. During the period from 1850 to the present, none of the eruptions of extratropical volcanoes in the Northern Hemisphere was observed in the tropical stratosphere and, therefore, could not contribute to the polar vortex strengthening in the conditions of an increase of the stratospheric equator-to-pole temperature gradient as a result of an increase of the tropical stratospheric temperature. However, this is possible during mid-latitude volcanic eruptions with VEI ≥ 6 and during high-latitude volcanic eruptions with VEI ≥ 7. During the period from 1980 to the present, none of the eruptions of extratropical volcanoes in the Northern Hemisphere influenced the intensity of Arctic ozone depletion, since in some cases the ejection of eruption products was outside the polar vortex, and in other cases the height of the ejection was insufficient and the volcanic aerosol was removed from the stratosphere as a result of sedimentation even before the polar vortex formation. However, the effect of extratropical volcanic eruptions on Arctic ozone depletion is possible when the eruption products enter the polar vortex, or when a volcanic aerosol propagates into the polar region before the polar vortex formation with a sufficient lifetime in the stratosphere, determined, in particular, by the height of the ejection.

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“…Particles can be ejected by a volcano to an altitude of about 6000 m (Karpov & Mokhov, 2010;Zuev et al, 2015), from where they are carried by air currents to the location of the station. 3.…”

Section: Discussionmentioning

confidence: 99%

“…Particles can be formed in the course of welding (Zajzon et al., 2013) and/or in the combustion chamber of a diesel engine of a diesel power plant located 420 m from the collection point. The mouth of the Erebus volcano located 1300 km from Vostok station (Sandimirova et al., 2003). Particles can be ejected by a volcano to an altitude of about 6000 m (Karpov & Mokhov, 2010; Zuev et al., 2015), from where they are carried by air currents to the location of the station. Products of combustion of materials of aircraft engines (Zajzon et al., 2013). Air routes pass 3000–5000 km from the station location. Products of combustion of flooded artificial earth satellites.…”

Section: Discussionmentioning

confidence: 99%

Extraterrestrial dust flux monitoring at Antarctic Vostok station: New collection of extraterrestrial spherules fallen from May to September 2017

Chetverikov

Ежов

Glukhov

et al. 2023

Meteorit & Planetary Scien

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Dust particles obtained by filtering fresh snow collected from May to September 2017 in the vicinity of Vostok station in Antarctica were examined using a scanning electron microscope. The collection of dust particles contains 197 spherules ranging from 0.5 to 117 μm in diameter, the most abundant ones (n = 188) by far being iron oxide spherules. Analyses of meteorological and human activity data suggest an extraterrestrial origin of most of the spherical particles. The particle size distribution histogram showed a smooth increase in their number with decreasing size and a dramatic drop at sizes smaller than 3 μm. The number of spherical particles has an uneven distribution over time, with an intense peak in July 27-28, 2017 which correlates by dates with the peak of the Southern Delta Aquariids meteor shower. The size distribution of the particles collected during the same period indicates the presence of a mechanism that accelerates their fall to the Earth. We propose that they are effective centers of condensation of ice crystals in stratospheric clouds. Our data indicate that collection of micrometeorites with sizes of several microns from the fresh snow is possible, opening a new way for sampling micrometeorites, including separate meteor showers.

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The Antarctic ozone depletion caused by Erebus volcano gas emissions

Cited by 17 publications

References 27 publications

Stratospheric Aerosol and Ozone Responses to the Hunga Tonga‐Hunga Ha'apai Volcanic Eruption

Stratospheric Aerosol and Ozone Responses to the Hunga Tonga‐Hunga Ha'apai Volcanic Eruption

On the role of extratropical volcanic eruptions in Arctic ozone depletion

Extraterrestrial dust flux monitoring at Antarctic Vostok station: New collection of extraterrestrial spherules fallen from May to September 2017

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