Measuring the Antarctic ozone hole with the new Ozone Mapping and Profiler Suite (OMPS)

Abstract. The new Ozone Mapping and Profiler Suite (OMPS), which launched on the Suomi National Polar-orbiting Partnership satellite in October 2011, gives a detailed view of the development of the Antarctic ozone hole and extends the long series of satellite ozone measurements that go back to the early 1970s. OMPS includes two modules – nadir and limb – to measure profile and total ozone concentrations. The new limb module is designed to measure the vertical profile of ozone between the lowermost stratosphere and the mesosphere. The OMPS observations over Antarctica show excellent agreement with the measurements obtained from independent satellite and ground-based instruments. This validation demonstrates that OMPS data can ably extend the ozone time series over Antarctica in the future. The OMPS observations are used to monitor and characterize the evolution of the 2012 Antarctic ozone hole. While large ozone losses were observed in September 2012, a strong ozone rebound occurred in October and November 2012. This ozone rebound is characterized by rapid increases of ozone at mid-stratospheric levels and a splitting of the ozone hole in early November. The 2012 Antarctic ozone hole was the second smallest on record since 1988.

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Measuring the Antarctic ozone hole with the new Ozone Mapping and Profiler Suite (OMPS)

Atmospheric Chemistry and Physics Discussions ◽

10.5194/acpd-13-26305-2013 ◽

2013 ◽

Vol 13 (10) ◽

pp. 26305-26325 ◽

Cited By ~ 1

Author(s):

N. A. Kramarova ◽

E. R. Nash ◽

P. A. Newman ◽

P. K. Bhartia ◽

R. D. McPeters ◽

...

Keyword(s):

Time Series ◽

Excellent Agreement ◽

Vertical Profile ◽

Total Ozone ◽

Ozone Hole ◽

Ozone Concentrations ◽

The Future ◽

Antarctic Ozone ◽

The Antarctic ◽

Antarctic Ozone Hole

Abstract. The new Ozone Mapping and Profiler Suite (OMPS) launched on the Suomi National Polar-orbiting Partnership satellite in October 2011 gives a more detailed view of the development of the Antarctic ozone hole than ever before. This instrumental suite extends the long series of satellite ozone measurements that go back to the early 1970s. The OMPS includes two modules – nadir and limb – to measure profile and total ozone concentrations. The new limb module is designed to measure the vertical profile of ozone between the lowermost stratosphere and the mesosphere. The OMPS observations over Antarctica show excellent agreement with the measurements obtained from independent satellite and ground-based instruments. This validation demonstrates that OMPS data can ably extend the ozone time series over Antarctica in the future. The OMPS observations are used to monitor and characterize the evolution of the 2012 Antarctic ozone hole. While large ozone losses were observed in September 2012, a strong ozone rebound occurred in October and November 2012. This ozone rebound is characterized by rapid increases of ozone at mid-stratospheric levels and a splitting of the ozone hole in early November. The 2012 Antarctic ozone hole was the second smallest on record since 1988.

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A major event of Antarctic ozone hole influence in southern Brazil in October 2016: an analysis of tropospheric and stratospheric dynamics

Annales Geophysicae ◽

10.5194/angeo-36-415-2018 ◽

2018 ◽

Vol 36 (2) ◽

pp. 415-424 ◽

Cited By ~ 2

Author(s):

Gabriela Dornelles Bittencourt ◽

Caroline Bresciani ◽

Damaris Kirsch Pinheiro ◽

José Valentin Bageston ◽

Nelson Jorge Schuch ◽

...

Keyword(s):

Total Ozone ◽

Ozone Hole ◽

Ozone Content ◽

Southern Brazil ◽

Pressure System ◽

Air Mass ◽

Stratospheric Dynamics ◽

Antarctic Ozone ◽

The Antarctic ◽

Antarctic Ozone Hole

Abstract. The Antarctic ozone hole is a cyclical phenomenon that occurs during the austral spring where there is a large decrease in ozone content in the Antarctic region. Ozone-poor air mass can be released and leave through the Antarctic ozone hole, thus reaching midlatitude regions. This phenomenon is known as the secondary effect of the Antarctic ozone hole. The objective of this study is to show how tropospheric and stratospheric dynamics behaved during the occurrence of this event. The ozone-poor air mass began to operate in the region on 20 October 2016. A reduction of ozone content of approximately 23 % was observed in relation to the climatology average recorded between 1992 and 2016. The same air mass persisted over the region and a drop of 19.8 % ozone content was observed on 21 October. Evidence of the 2016 event occurred through daily mean measurements of the total ozone column made with a surface instrument (Brewer MkIII no. 167 Spectrophotometer) located at the Southern Space Observatory (29.42∘ S, 53.87∘ W) in São Martinho da Serra, Rio Grande do Sul. Tropospheric dynamic analysis showed a post-frontal high pressure system on 20 and 21 October 2016, with pressure levels at sea level and thickness between 1000 and 500 hPa. Horizontal wind cuts at 250 hPa and omega values at 500 hPa revealed the presence of subtropical jet streams. When these streams were allied with positive omega values at 500 hPa and a high pressure system in southern Brazil and Uruguay, the advance of the ozone-poor air mass that caused intense reductions in total ozone content could be explained. Keywords. Atmospheric composition and structure (middle atmosphere – composition and chemistry)

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The Arctic ozone crater in 1989

Canadian Journal of Physics ◽

10.1139/p90-156 ◽

1990 ◽

Vol 68 (10) ◽

pp. 1113-1121

Author(s):

W. F. J. Evans ◽

A. E. Walker ◽

F. E. Bunn

Keyword(s):

Total Ozone ◽

Ozone Hole ◽

The Arctic ◽

Crater Floor ◽

Circulation Cell ◽

Tropospheric Circulation ◽

Antarctic Ozone ◽

The Antarctic ◽

Antarctic Ozone Hole ◽

Polar Ozone

The presence of a thinned area or craterlike feature in the Arctic polar ozone layer during March, 1986 has been reported previously (Can. J. Phys. 67, 161 (1989)). In this paper the morphology of the reappearance of the crater from January to March, 1989 is described. It appeared over northern Europe in late January and moved over western Canada in late February. The minimum value of ozone in the crater floor had fallen from 300 DU (1 Dobson unit (DU) = 0.01 mm) in 1979 to a new low of less than 200 DU in 1989, which is similar to the thinned total ozone columns observed within the Antarctic ozone hole. Analysis of the available total ozone mapping spectrometer ozone measurements indicates that the crater could be explained by a combination of two mechanisms; a chemical process, which depleted the ozone concentrations at altitudes in the 14–22 km region, and a transport process, which shifted the altitude distribution of ozone upwards such as a vertical circulation cell. Although the Arctic ozone crater is similar in several aspects to the Antarctic ozone hole, there remain several differences; the issue is whether the crater and the hole are manifestations of the same phenomenon. We consider that the Arctic ozone crater is mainly produced by dynamic redistribution driven by tropospheric circulation features.

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ANTARCTIC OZONE HOLE AS A NATURAL GEOPHYSICAL OBJECT

E3S Web of Conferences ◽

10.1051/e3sconf/20197502008 ◽

2019 ◽

Vol 75 ◽

pp. 02008

Author(s):

Alexander V. Dergunov ◽

Valentin B. Kashkin ◽

Тatyana V. Rubleva ◽

Alexey A. Romanov ◽

Roman V. Odintsov

Keyword(s):

Total Ozone ◽

Polar Region ◽

Total Content ◽

Early Spring ◽

Ozone Hole ◽

Polar Regions ◽

Middle Latitudes ◽

Antarctic Ozone ◽

The Antarctic ◽

Antarctic Ozone Hole

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.

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Delay in recovery of the Antarctic ozone hole from unexpected CFC-11 emissions

Nature Communications ◽

10.1038/s41467-019-13717-x ◽

2019 ◽

Vol 10 (1) ◽

Cited By ~ 12

Author(s):

S. S. Dhomse ◽

W. Feng ◽

S. A. Montzka ◽

R. Hossaini ◽

J. Keeble ◽

...

Keyword(s):

Montreal Protocol ◽

Ozone Hole ◽

Atmospheric Variability ◽

Gas Emissions ◽

Model Simulations ◽

The Future ◽

Antarctic Ozone ◽

The Antarctic ◽

The Impact ◽

Antarctic Ozone Hole

AbstractThe Antarctic ozone hole is decreasing in size but this recovery will be affected by atmospheric variability and any unexpected changes in chlorinated source gas emissions. Here, using model simulations, we show that the ozone hole will largely cease to occur by 2065 given compliance with the Montreal Protocol. If the unusual meteorology of 2002 is repeated, an ozone-hole-free-year could occur as soon as the early 2020s by some metrics. The recently discovered increase in CFC-11 emissions of ~ 13 Gg yr−1 may delay recovery. So far the impact on ozone is small, but if these emissions indicate production for foam use much more CFC-11 may be leaked in the future. Assuming such production over 10 years, disappearance of the ozone hole will be delayed by a few years, although there are significant uncertainties. Continued, substantial future CFC-11 emissions of 67 Gg yr−1 would delay Antarctic ozone recovery by well over a decade.

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Onset of Stratospheric Ozone Recovery in the Antarctic Ozone Hole in Assimilated Daily Total Ozone Columns

Journal of Geophysical Research Atmospheres ◽

10.1002/2016jd025723 ◽

2017 ◽

Vol 122 (21) ◽

pp. 11,880-11,899 ◽

Cited By ~ 4

Author(s):

A. T. J. de Laat ◽

M. van Weele ◽

R. J. van der A

Keyword(s):

Total Ozone ◽

Stratospheric Ozone ◽

Ozone Hole ◽

Antarctic Ozone ◽

The Antarctic ◽

Antarctic Ozone Hole ◽

Daily Total

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Tracing the second stage of ozone recovery in the Antarctic ozone-hole with a "big data" approach to multivariate regressions

Atmospheric Chemistry and Physics ◽

10.5194/acp-15-79-2015 ◽

2015 ◽

Vol 15 (1) ◽

pp. 79-97 ◽

Cited By ~ 14

Author(s):

A. T. J. de Laat ◽

R. J. van der A ◽

M. van Weele

Keyword(s):

Time Series ◽

Big Data ◽

Linear Trend ◽

Piecewise Linear ◽

Ozone Hole ◽

Quasi Biennial Oscillation ◽

Record Length ◽

Antarctic Ozone ◽

The Antarctic ◽

Antarctic Ozone Hole

Abstract. This study presents a sensitivity analysis of multivariate regressions of recent springtime Antarctic vortex ozone trends using a "big data" ensemble approach. Our results indicate that the poleward heat flux (Eliassen–Palm flux) and the effective chlorine loading respectively explain most of the short-term and long-term variability in different Antarctic springtime total ozone records. The inclusion in the regression of stratospheric volcanic aerosols, solar variability and the quasi-biennial oscillation is shown to increase rather than decrease the overall uncertainty in the attribution of Antarctic springtime ozone because of large uncertainties in their respective records. Calculating the trend significance for the ozone record from the late 1990s onwards solely based on the fit of the effective chlorine loading is not recommended, as this does not take fit residuals into account, resulting in too narrow uncertainty intervals, while the fixed temporal change of the effective chlorine loading does not allow for any flexibility in the trends. When taking fit residuals into account in a piecewise linear trend fit, we find that approximately 30–60% of the regressions in the full ensemble result in a statistically significant positive springtime ozone trend over Antarctica from the late 1990s onwards. Analysis of choices and uncertainties in time series show that, depending on choices in time series and parameters, the fraction of statistically significant trends in parts of the ensemble can range from negligible to a complete 100% significance. We also find that, consistent with expectations, the number of statistically significant trends increases with increasing record length. Although our results indicate that the use multivariate regressions is a valid approach for assessing the state of Antarctic ozone hole recovery, and it can be expected that results will move towards more confidence in recovery with increasing record length, uncertainties in choices currently do not yet support formal identification of recovery of the Antarctic ozone hole.

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