Polar stratospheric clouds (PSCs) play important roles in stratospheric ozone depletion
during winter and spring at high latitudes (eg, the Antarctic ozone hole). PSC particles …

In the Arctic winter/spring of 2019/2020, stratospheric temperatures were exceptionally low
until early April and the polar vortex was very stable. As a consequence, significant chemical …

Balloon-borne ozonesondes launched weekly from South Pole Station (1986–2021)
measure high-vertical-resolution profiles of ozone and temperature from the surface to 30 …

Hypohalous acids (HOX) are a class of molecules that play a key role in the atmospheric
seasonal depletion of ozone and have the ability to form both hydrogen and halogen bonds …

Water vapour convectively injected into the mid-latitude lowermost stratosphere could affect
stratospheric ozone. The associated potential ozone loss process requires low temperatures …

We retrieved lower stratospheric vertical profiles of O 3, HNO 3, and HCl from solar spectra
taken with a ground-based Fourier transform infrared spectrometer (FTIR) installed at Syowa …

More than 3 decades after the discovery of the ozone hole, the processes involved in its
formation are believed to be understood in great detail. Current state-of-the-art models can …

The Arctic stratospheric ozone depletion event in spring 2020 was the most severe
compared with previous years. We retrieved the critical indicator ozone vertical column …

This chapter builds on the long sequence of chapters in most of the previous Assessments
that have specifically considered stratospheric ozone in the polar regions of the earth. This …

Polar stratospheric clouds (PSCs) and cold stratospheric aerosols drive heterogeneous
chemistry and play a major role in polar ozone depletion. The Chemical Lagrangian Model …