Analytical studies on the variations of the antarctic ozone layer

1992 ◽  
Vol 9 (1) ◽  
pp. 46-52
Author(s):  
Qu Shaohou
Keyword(s):  
Ozone Layer ◽  
Analytical Studies ◽  
Antarctic Ozone ◽  
The Antarctic

scholarly journals Antarctic ozone depletion measured by balloonsondes at Maitri - 1992

MAUSAM ◽  
2021 ◽  
Vol 48 (3) ◽  
pp. 443-446
Author(s):  
S.K. PESIHN ◽  
P. RAJESH RAO ◽  
S.K. SRIVASTAV
Keyword(s):  
Ozone Depletion ◽  
Vertical Structure ◽  
Ozone Layer ◽  
Stages Of Development ◽  
Austral Spring ◽  
Antarctic Ozone ◽  
The Antarctic

ABSTRACT. Profiles from a series of balloon borne ozonesonde ascents are used to chart the development of the Antarctic depletion over Maitri in the austral spring of 1992. The vertical structure of the ozone layer is discussed, including the presence of stratification, which occurs at all stages of development. The main feature of 1992 ozonesonde flights is depletion of 97% in the months of September and October between 15-23 km, which is unique.    

scholarly journals Report of a large depletion in the ozone layer over southern Brazil and Uruguay by using multi-instrumental data

2018 ◽  
Vol 36 (2) ◽  
pp. 405-413 ◽  
Author(s):  
Caroline Bresciani ◽  
Gabriela Dornelles Bittencourt ◽  
José Valentin Bageston ◽  
Damaris Kirsch Pinheiro ◽  
Nelson Jorge Schuch ◽  
...  
Keyword(s):  
Ozone Concentration ◽  
Ozone Layer ◽  
Ozone Hole ◽  
Secondary Effect ◽  
Air Mass ◽  
Brewer Spectrophotometer ◽  
Antarctic Ozone ◽  
The Antarctic ◽  
Santa Maria ◽  
Antarctic Ozone Hole

Abstract. Ozone is one of the chemical compounds that form part of the atmosphere. It plays a key role in the stratosphere where the “ozone layer” is located and absorbs large amounts of ultraviolet radiation. However, during austral spring (August–November), there is a massive destruction of the ozone layer, which is known as the “Antarctic ozone hole”. This phenomenon decreases ozone concentration in that region, which may affect other regions in addition to the polar one. This anomaly may also reach mid-latitudes; hence, it is called the “secondary effect of the Antarctic ozone hole”. Therefore, this study aims to identify the passage of an ozone secondary effect (OSE) event in the region of the city of Santa Maria – RS (29.68∘ S, 53.80∘ W) by means of a multi-instrumental analysis using the satellites TIMED/SABER, AURA/MLS, and OMI-ERS. Measurements were made in São Martinho da Serra/RS – Brazil (29.53∘ S, 53.85∘ W) using a sounding balloon and a Brewer Spectrophotometer. In addition, the present study aims to describe and analyse the influence that this stratospheric ozone reduction has on temperatures presented by these instruments, including data collected through the radio occultation technique. The event was first identified by the AURA/MLS satellite on 19 October 2016 over Uruguay. This reduction in ozone concentration was found by comparing the climatology for the years 1996–1998 for the state of Rio Grande do Sul, which is close to Uruguay. This event was already observed in Santa Maria/RS-Brazil on 20 October 2016 as presented by the OMI-ERS satellite and the Brewer Spectrophotometer. Moreover, a significant decrease was reported by the TIMED/SABER satellite in Uruguay. On 21 October, the poor ozone air mass was still over the region of interest, according to the OMI-ERS satellite, data from the sounding balloon launched in Santa Maria/RS-Brazil, and measurements made by the AURA/MLS satellite. Furthermore, the influence of ozone on the stratosphere temperature was observed during this period. Despite a continuous decrease detected in height, the temperature should have followed an increasing pattern in the stratospheric layer. Finally, the TIMED/SABER and OMI-ERS satellites showed that on 23 October, the air mass with low ozone concentration was moving away, and its layer, as well as the temperature, in the stratosphere was re-established. Keywords. Atmospheric composition and structure (middle atmosphere – composition and chemistry; instruments and techniques)

A hole in the Arctic polar ozone layer during March 1986

1989 ◽  
Vol 67 (2-3) ◽  
pp. 161-165 ◽  
Author(s):  
W. F. J. Evans
Keyword(s):  
Total Ozone ◽  
Democratic Republic ◽  
Ozone Layer ◽  
The Arctic ◽  
Total Ozone Mapping Spectrometer ◽  
Altitude Profile ◽  
Antarctic Ozone ◽  
The Difference ◽  
The Antarctic ◽  
Polar Ozone

A craterlike structure or "hole" in the Arctic polar ozone layer during March 1986 has been observed in the total ozone images from the total ozone mapping spectrometer instrument on the NIMBUS 7 satellite. Observations from ozonesondes in the vicinity of this crater show a depleted region in the altitude profile from 10 to 16 km. This altitude region of depleted ozone is similar to the depleted layer observed from 12 to 18 km within the Antarctic ozone hole. A comparison has been made between the ozone altitude profile outside the crater at Resolute, N.W.T., Canada (75°N), and the ozone altitude profile inside the crater at Lindenberg, German Democratic Republic, (55°N). The difference in these profiles demonstrates that the crater is due to a process that has altered the altitude distribution of ozone in the 10–16 km region. This depletion could be attributed to either a vertical circulation or a chemical-depletion process.

scholarly journals Emergence of healing in the Antarctic ozone layer

Science ◽  
2016 ◽  
Vol 353 (6296) ◽  
pp. 269-274 ◽  
Author(s):  
Susan Solomon ◽  
Diane J. Ivy ◽  
Doug Kinnison ◽  
Michael J. Mills ◽  
Ryan R. Neely ◽  
...  
Keyword(s):  
Ozone Layer ◽  
Antarctic Ozone ◽  
The Antarctic

Distant troposphere-stratosphere teleconnections from 30-year satellite measurements of the antarctic ozone

2012 ◽  
Vol 18 (5(78)) ◽  
pp. 48-58
Author(s):  
V.O. Kravchenko ◽  
O.M. Yevtushevskyi ◽  
H.P. Milinevskyi
Keyword(s):  
Satellite Measurements ◽  
Antarctic Ozone ◽  
The Antarctic

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

scholarly journals Evolution of Antarctic ozone in September–December predicted by CCMVal-2 model simulations for the 21st century

2013 ◽  
Vol 13 (8) ◽  
pp. 4413-4427 ◽  
Author(s):  
J. M. Siddaway ◽  
S. V. Petelina ◽  
D. J. Karoly ◽  
A. R. Klekociuk ◽  
R. J. Dargaville
Keyword(s):  
21St Century ◽  
Climate Model ◽  
Polar Vortex ◽  
Early Summer ◽  
Slow Increase ◽  
Large Variability ◽  
Model Simulations ◽  
Antarctic Ozone ◽  
Decadal Rate ◽  
The Antarctic

Abstract. Chemistry-Climate Model Validation phase 2 (CCMVal-2) model simulations are used to analyze Antarctic ozone increases in 2000–2100 during local spring and early summer, both vertically integrated and at several pressure levels in the lower stratosphere. Multi-model median trends of monthly zonal mean total ozone column (TOC), ozone volume mixing ratio (VMR), wind speed and temperature poleward of 60° S are investigated. Median values are used to account for large variability in models, and the associated uncertainty is calculated using a bootstrapping technique. According to the trend derived from the twelve CCMVal-2 models selected, Antarctic TOC will not return to a 1965 baseline, an average of 1960–1969 values, by the end of the 21st century in September–November, but will return in ~2080 in December. The speed of December ozone depletion before 2000 was slower compared to spring months, and thus the decadal rate of December TOC increase after 2000 is also slower. Projected trends in December ozone VMR at 20–100 hPa show a much slower rate of ozone recovery, particularly at 50–70 hPa, than for spring months. Trends in temperature and winds at 20–150 hPa are also analyzed in order to attribute the projected slow increase of December ozone and to investigate future changes in the Antarctic atmosphere in general, including some aspects of the polar vortex breakup.

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