The Antarctic ozone hole during 2017

Klekociuk, Andrew; Tully, Matthew B.; Krummel, P. B.; Evtushevsky, Oleksandr; Kravchenko, Volodymyr; Henderson, Stuart; Alexander, Simon P.; Querel, Richard; Nichol, Sylvia; Smale, Dan; Milinevsky, Gennadi; Grytsai, Asen; Fraser, Paul J.; Xiangdong, Zheng; Gies, H. P.; Schofield, Robyn; Shanklin, Jonathan

doi:10.1071/es19019

Cited by 6 publications

(9 citation statements)

References 41 publications

(92 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These anomalies have been discussed for specific years (e.g. 2017 is discussed in Klekociuk et al 2019). As seen in 2018 (Fig.…”

Section: Metrics For the 2019 Ozone Holementioning

confidence: 90%

“…By this time, the 2019 ozone hole was well below the climatological mean and was one of the smallest observed since the early years of the observational record. It is useful to note that the metrics for 2019 in Table 1 are closely ranked to some other years of the preceding decade, particularly 2017, which is discussed in detail by Klekociuk et al (2019). We return to this point in Section 3.5.…”

Section: Metrics For the 2019 Ozone Holementioning

confidence: 95%

“…A measure of high latitude daily Rossby wave activity near the edge of polar vortex in the lower stratosphere (at 50 hPa and 608S) is shown in Fig. 6 (Klekociuk et al 2019). The amplitudes of geopotential height disturbances in winter-spring of 2019 were generally higher than in 2018.…”

Section: Stratospheric Conditions In 2018 and 2019mentioning

confidence: 96%

“…9a and b, respectively. The mixing ratio of N 2 O in the Antarctic vortex is influenced by the phase of the QBO approximately 1 year earlier (Strahan et al 2015;Klekociuk et al 2019). Through a compact anti-correlation with inorganic chlorine (Cl y ), the N 2 O concentration provides a proxy for the potential influence of tropical processes on ozone depletion in the polar vortex (Strahan et al 2014;Strahan and Douglass 2018).…”

Section: Stratospheric Conditions In 2018 and 2019mentioning

confidence: 99%

See 3 more Smart Citations

The Antarctic ozone hole during 2018 and 2019

Klekociuk

Tully

Krummel

et al. 2021

J. South. Hemisph. Earth Syst. Sci.

Self Cite

View full text Add to dashboard Cite

While the Montreal Protocol is reducing stratospheric ozone loss, recent increases in some ozone depleting substance (ODS) emissions have been identified that may impact southern hemisphere climate systems. In this study, we discuss characteristics of the 2018 and 2019 Antarctic ozone holes using surface in situ, satellite and reanalysis data to gain a better understanding of recent ozone variability. These ozone holes had strongly contrasting characteristics. In 2018, the Antarctic stratospheric vortex was relatively stable and cold in comparison to most years of the prior decade. This resulted in a large and persistent ozone hole that ranked in the upper-tercile of metrics quantifying Antarctic ozone depletion. In contrast, strong stratospheric warming in the spring of 2019 curtailed the development of the ozone hole, causing it to be anomalously small and of similar size to ozone holes in the 1980s. As known from previous studies, the ability of planetary waves to propagate into the stratosphere at high latitudes is an important factor that influences temperatures of the polar vortex and the overall amount of ozone loss in any particular year. Disturbance and warming of the vortex by strong planetary wave activity were the dominant factors in the small 2019 ozone hole. In contrast, planetary wave disturbances to the vortex in the winter-spring of 2018 were much weaker than in 2019. These results increase our understanding of the impact of Montreal Protocol controls on ODS and the effects of Antarctic ozone on the southern hemisphere climate system.

show abstract

“…These anomalies have been discussed for specific years (e.g. 2017 is discussed in Klekociuk et al 2019). As seen in 2018 (Fig.…”

Section: Metrics For the 2019 Ozone Holementioning

confidence: 90%

Section: Metrics For the 2019 Ozone Holementioning

confidence: 95%

Section: Stratospheric Conditions In 2018 and 2019mentioning

confidence: 96%

Section: Stratospheric Conditions In 2018 and 2019mentioning

confidence: 99%

See 2 more Smart Citations

The Antarctic ozone hole during 2018 and 2019

Klekociuk

Tully

Krummel

et al. 2021

J. South. Hemisph. Earth Syst. Sci.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Increased wave activity destabilises the polar vortex during the winter and spring months, reduces total duration of the ozone hole and decreases ozone loss. The southern hemisphere (SH) polar stratosphere can be disturbed by the planetary waves generated in the tropics, as well as in the mid-and polar latitudes (Kodera and Yamazaki 1989;Nishii and Nakamura 2004;Huck et al 2005;Peters et al 2007;Grassi et al 2008;Agosta and Canziani 2011).…”

Section: Introductionmentioning

confidence: 99%

The influence of large amplitude planetary waves on the Antarctic ozone hole of austral spring 2017

Evtushevsky

Klekociuk

Kravchenko

et al. 2019

JSHESS

Self Cite

View full text Add to dashboard Cite

Quasi-stationary planetary wave activity in the lower Antarctic stratosphere in the late austral winter was an important contributor to the preconditioning of the ozone hole in spring 2017. Observations show that the ozone hole area (OHA) in spring 2017 was at the level of 1980s, that is, almost half the maximum size in 2000s. The observed OHA was close to that forecasted based on a least-squares linear regression between wave amplitude in August and OHA in September–November. We show that the key factor which contributed to the preconditioning of the Antarctic stratosphere for a relatively small ozone hole in the spring of 2017 was the development of large-amplitude stratospheric planetary waves of zonal wave numbers 1 and 2 in late winter. The waves likely originated from tropospheric wave trains and promoted the development of strong mid-latitude anticyclones in the lower stratosphere which interacted with the stratospheric polar vortex and strongly eroded the vortex in August and September, mitigating the overall level of ozone loss.

show abstract

Antarctic planetary wave spectrum under different polar vortex conditions in 2019 and 2020 based on total ozone column data

Grytsai¹,

Milinevsky²,

Andrienko³

et al. 2022

UAJ

View full text Add to dashboard Cite

We examine the zonal wavenumber spectrum of planetary (Rossby) waves in the atmosphere above Antarctica in each of two contrasting years: in 2019, when there was a sudden stratospheric warming (SSW), and in 2020 when the Antarctic stratospheric vortex was unusually strong and long-lived. The ozone hole (OH) is developed over Antarctica in spring, and its state depends on disturbances of the stratospheric polar vortex by planetary waves (PW). Our analysis uses data on the distribution of the total ozone column from the Ozone Monitoring Instrument on the Aura satellite and ground-based measurements from the Dobson spectrophotometer at the Ukrainian Antarctic Akademik Vernadsky station in Antarctica. The 2019 SSW strongly displaced the Antarctic vortex off-pole and aided the breakdown of the ozone hole. The SSW occurred during the peak activity of quasi-stationary planetary wave-1, which was enhanced at the time of the warming by the large amplitude of traveling wave-2. In the spring of 2020, the stratospheric polar vortex was relatively undisturbed, allowing the OH area to attain a size close to its historical maximum. A factor in 2020 that aided the stability of the vortex was the relatively small amplitude of wave-1. The stability was maintained despite regular periods when the amplitude of traveling wave-2 attained or even exceeded values around the time of the SSW in 2019. We find that a factor contributing to the differences between the wave effects in the two years is the dynamics of the quasi-stationary wave-1. Anticorrelation of the wave-1 and wave-2 amplitudes near the edge of the vortex was clearly observed in 2020, which can be caused by the transfer of planetary wave energy between different spectral wave components, unlike the situation in 2019.

show abstract

The Antarctic ozone hole during 2017

Cited by 6 publications

References 41 publications

The Antarctic ozone hole during 2018 and 2019

The Antarctic ozone hole during 2018 and 2019

The influence of large amplitude planetary waves on the Antarctic ozone hole of austral spring 2017

Antarctic planetary wave spectrum under different polar vortex conditions in 2019 and 2020 based on total ozone column data

Contact Info

Product

Resources

About