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Australian wildfires cause the largest stratospheric warming since Pinatubo and extends the lifetime of the Antarctic ozone hole

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Title: Australian wildfires cause the largest stratospheric warming since Pinatubo and extends the lifetime of the Antarctic ozone hole
Authors: Damany-Pearce, L, Johnson, B, Wells, A, Osborne, M, Allan, J, Belcher, C, Jones, A, Haywood, J
Source: Sci Rep
Scientific Reports, Vol 12, Iss 1, Pp 1-15 (2022)
Damany-Pearce, L, Johnson, B, Wells, A, Osborne, M, Allan, J, Belcher, C, Jones, A & Haywood, J 2022, 'Australian wildfires cause the largest stratospheric warming since Pinatubo and extends the lifetime of the Antarctic ozone hole', Scientific Reports, vol. 12, no. 1, 12665. https://doi.org/10.1038/s41598-022-15794-3
Publisher Information: Springer Science and Business Media LLC, 2022.
Publication Year: 2022
Subject Terms: Aerosols, Ozone/analysis, Atmosphere, Science, Natural hazards, Australia, Antarctic Regions, ResearchInstitutes_Networks_Beacons/MERI, name=Manchester Environmental Research Institute, Atmosphere/analysis, Manchester Environmental Research Institute, 01 natural sciences, Article, Wildfires, Ozone, 13. Climate action, Atmospheric science, Climate change, Medicine, Ozone Depletion, Climate sciences, 0105 earth and related environmental sciences
Description: Global mean lower stratosphere temperatures rose abruptly in January 2020 reaching values not experienced since the early 1990s. Anomalously high lower stratospheric temperatures were recorded for 4 months at highly statistically significant levels. Here, we use a combination of satellite and surface-based remote sensing observations to derive a time-series of stratospheric biomass burning aerosol optical depths originating from intense SouthEastern Australian wildfires and use these aerosol optical depths in a state-of-the-art climate model. We show that the S.E. Australian wildfires are the cause of this lower stratospheric warming. We also investigate the radiatively-driven dynamical response to the observed stratospheric ozone perturbation and find a significant strengthening of the springtime Antarctic polar vortex suggesting that biomass burning aerosols play a significant role in the observed anomalous longevity of the ozone hole in 2020.
Document Type: Article
Other literature type
File Description: 12665-
Language: English
ISSN: 2045-2322
DOI: 10.1038/s41598-022-15794-3
Access URL: https://pubmed.ncbi.nlm.nih.gov/36008428
https://doaj.org/article/032e405592544b2eac0e8de0ed6f7bc2
https://research.manchester.ac.uk/en/publications/24b81f16-e170-4f79-827d-7c2f8691c3c7
https://doi.org/10.1038/s41598-022-15794-3
https://research.manchester.ac.uk/en/publications/24b81f16-e170-4f79-827d-7c2f8691c3c7
https://doi.org/10.1038/s41598-022-15794-3
http://www.scopus.com/inward/record.url?scp=85136731302&partnerID=8YFLogxK
Rights: CC BY
Accession Number: edsair.doi.dedup.....774b8473ab9e93a406511e3b39322c1c
Database: OpenAIRE
Description
Abstract:Global mean lower stratosphere temperatures rose abruptly in January 2020 reaching values not experienced since the early 1990s. Anomalously high lower stratospheric temperatures were recorded for 4 months at highly statistically significant levels. Here, we use a combination of satellite and surface-based remote sensing observations to derive a time-series of stratospheric biomass burning aerosol optical depths originating from intense SouthEastern Australian wildfires and use these aerosol optical depths in a state-of-the-art climate model. We show that the S.E. Australian wildfires are the cause of this lower stratospheric warming. We also investigate the radiatively-driven dynamical response to the observed stratospheric ozone perturbation and find a significant strengthening of the springtime Antarctic polar vortex suggesting that biomass burning aerosols play a significant role in the observed anomalous longevity of the ozone hole in 2020.
ISSN:20452322
DOI:10.1038/s41598-022-15794-3