Reduced ozone loss at the upper edge of the Antarctic Ozone Hole during 2001–2004
- 28 October 2005
- journal article
- Published by American Geophysical Union (AGU) in Geophysical Research Letters
- Vol. 32 (20)
- https://doi.org/10.1029/2005gl023968
Abstract
The top edge (20–22 km) of the Antarctic ozone hole has been identified as a good place to detect ozone recovery (D. J. Hofmann et al., 1997). During the first six POAM observation years (1994–1996, 1998–2000), the early October ozone mixing ratio at the top edge of the ozone hole was nearly constant, while during the last four years (2001–2004) it was noticeably greater. The estimated ozone photochemical loss for air sampled at 20–22 km in 2001–2004 was likewise smaller. During 2001–2004, there were fewer PSCs and generally higher temperatures during August and September at 20–22 km than prior years. The increased ozone was due to both reduced photochemical ozone loss (2001, 2003, and 2004) and enhanced adiabatic descent of the ozone profile (2002). Because of the changing meteorological conditions, the ozone changes at the top edge of the hole cannot be easily attributed to changes in chlorine abundance.This publication has 22 references indexed in Scilit:
- A measurement/model comparison of ozone photochemical loss in the Antarctic ozone hole using Polar Ozone and Aerosol Measurement observations and the Match techniqueJournal of Geophysical Research: Atmospheres, 2005
- Vertical distribution of ozone at Marambio, Antarctic Peninsula, during 1987–1999Journal of Geophysical Research: Atmospheres, 2003
- A unified, long‐term, high‐latitude stratospheric aerosol and cloud database using SAM II, SAGE II, and POAM II/III data: Algorithm description, database definition, and climatologyJournal of Geophysical Research: Atmospheres, 2003
- Unusual stratospheric transport and mixing during the 2002 Antarctic winterGeophysical Research Letters, 2003
- POAM III observations of the anomalous 2002 Antarctic ozone holeGeophysical Research Letters, 2003
- A seasonal climatology of effective diffusivity in the stratosphereJournal of Geophysical Research: Atmospheres, 2001
- The impact of the mixing properties within the Antarctic stratospheric vortex on ozone loss in springJournal of Geophysical Research: Atmospheres, 2001
- The NCEP–NCAR 50–Year Reanalysis: Monthly Means CD–ROM and DocumentationBulletin of the American Meteorological Society, 2001
- Model and measurements show Antarctic ozone loss follows edge of polar nightGeophysical Research Letters, 2000
- Ten years of ozonesonde measurements at the south pole: Implications for recovery of springtime Antarctic ozoneJournal of Geophysical Research: Atmospheres, 1997