High-latitude ozone loss outside the Antarctic ozone hole

Nature ◽  
1989 ◽  
Vol 342 (6247) ◽  
pp. 233-237 ◽  
Author(s):  
M. H. Proffitt ◽  
D. W. Fahey ◽  
K. K. Kelly ◽  
A. F. Tuck
Keyword(s):  
High Latitude ◽  
Ozone Hole ◽  
Ozone Loss ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole

Reduced ozone loss at the upper edge of the Antarctic Ozone Hole during 2001–2004

2005 ◽  
Vol 32 (20) ◽  
Author(s):  
Karl Hoppel ◽  
Gerald Nedoluha ◽  
Michael Fromm ◽  
Douglas Allen ◽  
Richard Bevilacqua ◽  
...  
Keyword(s):  
Ozone Hole ◽  
Ozone Loss ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole

scholarly journals The Antarctic ozone hole during 2017

2019 ◽  
Vol 69 (1) ◽  
pp. 29
Author(s):  
Andrew R. Klekociuk ◽  
Matthew B. Tully ◽  
Paul B. Krummel ◽  
Oleksandr Evtushevsky ◽  
Volodymyr Kravchenko ◽  
...  
Keyword(s):  
Stratospheric Ozone ◽  
Polar Vortex ◽  
Wave Activity ◽  
Ozone Hole ◽  
Quasi Biennial Oscillation ◽  
Ozone Loss ◽  
Hole Making ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole

We review the 2017 Antarctic ozone hole, making use of various meteorological reanalyses, and in-situ, satellite and ground-based measurements of ozone and related trace gases, and ground-based measurements of ultraviolet radiation. The 2017 ozone hole was associated with relatively high-ozone concentrations over the Antarctic region compared to other years, and our analysis ranked it in the smallest 25% of observed ozone holes in terms of size. The severity of stratospheric ozone loss was comparable with that which occurred in 2002 (when the stratospheric vortex exhibited an unprecedented major warming) and most years prior to 1989 (which were early in the development of the ozone hole). Disturbances to the polar vortex in August and September that were associated with intervals of anomalous planetary wave activity resulted in significant erosion of the polar vortex and the mitigation of the overall level of ozone depletion. The enhanced wave activity was favoured by below-average westerly winds at high southern latitudes during winter, and the prevailing easterly phase of the quasi-biennial oscillation (QBO). Using proxy information on the chemical make-up of the polar vortex based on the analysis of nitrous oxide and the likely influence of the QBO, we suggest that the concentration of inorganic chlorine, which plays a key role in ozone loss, was likely similar to that in 2014 and 2016, when the ozone hole was larger than that in 2017. Finally, we found that the overall severity of Antarctic ozone loss in 2017 was largely dictated by the timing of the disturbances to the polar vortex rather than interannual variability in the level of inorganic chlorine.

scholarly journals Has the Antarctic Vortex Split before 2002?

2005 ◽  
Vol 62 (3) ◽  
pp. 581-588 ◽  
Author(s):  
H. K. Roscoe ◽  
J. D. Shanklin ◽  
S. R. Colwell
Keyword(s):  
Ozone Hole ◽  
South Pole ◽  
Significant Modification ◽  
The South ◽  
Ozone Loss ◽  
Stratospheric Temperature ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole ◽  
Vortex Split

Abstract In late September 2002, the Antarctic ozone hole was seen to split into two parts, resulting in large increases in ozone at some stations and the potential for significant modification of chlorofluorocarbon (CFC)-induced ozone loss. The phenomenon was dynamical (a split vortex), causing large increases in stratospheric temperature above stations normally within the vortex. Temperatures at Halley, Antarctica, at 30 hPa increased by over 60 K, and temperatures at South Pole at 100 hPa increased by over 25 K. It is important to know if this has happened before, since if it happens in the future, it would significantly alter the total hemispheric ozone loss due to chlorine from CFCs, particularly if it happens in August or September. Temperatures in winter and spring measured at Halley or the South Pole since 1957 and 1961, respectively, show no other comparable increases until the final warming in late spring, except for two dates in the 1980s at Halley when meteorological analyses show no vortex split. There are very few periods of measurements missing at both Halley and the South Pole, and analyses in those few periods show no vortex split. Measurements in August and September at sites normally near the edge of the vortex show very few suspicious dates, and analyses of those few suspicious dates again show no vortex split. It is concluded that the vortex has probably not split before the final warming since Antarctic records began in the late 1950s, and almost certainly not in August or September.

The discovery of the Antarctic ozone hole

Nature ◽  
2019 ◽  
Vol 575 (7781) ◽  
pp. 46-47 ◽  
Author(s):  
Susan Solomon
Keyword(s):  
Ozone Hole ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole

Ozone loss in Antarctica: the implications for global change

1992 ◽  
Vol 338 (1285) ◽  
pp. 219-226 ◽  
Keyword(s):  
Large Scale ◽  
Stratospheric Ozone ◽  
Field Measurements ◽  
Careful Analysis ◽  
Data Sets ◽  
Ozone Loss ◽  
New Ideas ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole

Although stratospheric ozone loss had been predicted for m any years, the discovery of the Antarctic ozone hole was a surprise which necessitated a major rethink in theories of stratospheric chemistry. The new ideas advanced are discussed here. Global ozone loss has now also been reported after careful analysis of satellite and groundbased data sets. The possible causes of this loss are considered. Further advances require a careful coordination of field measurements and large-scale numerical modelling.

scholarly journals On the size of the Antarctic ozone hole

2004 ◽  
Vol 31 (21) ◽  
pp. n/a-n/a ◽  
Author(s):  
Paul A. Newman ◽  
S. Randolph Kawa ◽  
Eric R. Nash
Keyword(s):  
Ozone Hole ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Antarctic Ozone Hole
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