ANTARCTIC OZONE HOLE AS A NATURAL GEOPHYSICAL OBJECT

Alexander V Dergunov,Alexey A Romanov,Valentin B Kashkin,Roman V Odintsov,Тatyana V Rubleva,G.M Tsibulsky,V.B Kashkin,E.A Lupyan,V.I Kharuk,M.V Noskov,A.K Sagatelian,L.G Sverdlik

doi:10.1051/e3sconf/20197502008

Alexander V Dergunov, Alexey A Romanov + Show 10 more

Open Access

https://doi.org/10.1051/e3sconf/20197502008

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Abstract

Satellite data on total ozone content for 1985-2015 have been used. Methods of evaluating ozone deficit in the polar region and its excess in middle latitudes of the Southern Hemisphere have been developed. In early spring the ozone molecules outflow and the ozone anomaly forms. Ozone inflows the middle latitudes, its total content increases and a ring with elevated TO forms. In October-November the dynamic process reverses, from the ring the ozone molecules transfer to the polar latitudes. The amount of ozone leaving the ring into the polar regions and filling the ozone anomaly is virtually the same. The results produces indicate that the Antarctic ozone hole is a natural geophysical formation.

Highlights

The ozone layer protects our planet from the hard ultraviolet rays of the Sun
Schoeberl showed that during AOH formation the ozone mass is transferred from the near-polar regions of the Southern hemisphere to the middle latitudes, and from the end of September the ozone mass moves towards the pole
Let us compare the amount of ozone that has «left» the polar regions and ozone excess in the middle latitudes

Summary

Introduction

The ozone layer protects our planet from the hard ultraviolet rays of the Sun. Total ozone (TO) – is the thickness of gaseous ozone layer in the vertical column of atmosphere at temperature 0°С and atmospheric pressure 1013 hPa. In 1985 the Southern Hemisphere around the Antarctic in spring was found to form an ozone anomaly (Antarctic ozone hole, AOH) [1]. In 1986 researchers R.S. Stolarski and M.R. Schoeberl showed that during AOH formation the ozone mass is transferred from the near-polar regions of the Southern hemisphere to the middle latitudes, and from the end of September the ozone mass moves towards the pole. Currently is generally accepted the theory holding that the cause of ozone layer depletion in the polar regions of the Southern hemisphere is destruction of ozone by some substances of anthropogenic origin for example chlorfluorcarbons (freons) [4, 5]. When signing the Montreal Protocol it was claimed that the Antarctic ozone hole would disappear in 2010, this anomaly occurs annually. Total ozone was measured in the range of 300-380 nm with an accuracy of 2-4%

The ozone spring dynamics

Select averaging interval

Results analysis

Conclusion