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On the Cause of Recent Variations in Lower Stratospheric Ozone

Chipperfield, Martyn P. and Dhomse, Sandip and Hossaini, Ryan and Feng, Wuhu and Santee, Michelle and Weber, Mark and Burrows, John P. and Wild, Jeanette and Loyola, Diego and Coldewey-Egbers, Melanie (2018) On the Cause of Recent Variations in Lower Stratospheric Ozone. Geophysical Research Letters, 45, pp. 1-9. Wiley. doi: 10.1029/2018GL078071. ISSN 0094-8276.

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Official URL: https://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2018GL078071


We use height‐resolved and total column satellite observations and 3‐D chemical transport model simulations to study stratospheric ozone variations during 1998–2017 as ozone‐depleting substances decline. In 2017 extrapolar lower stratospheric ozone displayed a strong positive anomaly following much lower values in 2016. This points to large interannual variability rather than an ongoing downward trend, as reported recently by Ball et al. (2018, https://doi.org/10.5194/acp‐18‐1379‐2018). The observed ozone variations are well captured by the chemical transport model throughout the stratosphere and are largely driven by meteorology. Model sensitivity experiments show that the contribution of past trends in short‐lived chlorine species to the ozone changes is small. Similarly, the potential impact of modest trends in natural brominated short‐lived species is small. These results confirm the important role that atmospheric dynamics plays in controlling ozone in the extrapolar lower stratosphere on multiannual time scales and the continued importance of monitoring ozone profiles as the stratosphere changes.

Item URL in elib:https://elib.dlr.de/120316/
Document Type:Article
Title:On the Cause of Recent Variations in Lower Stratospheric Ozone
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Chipperfield, Martyn P.Univ. of Leeds, Leeds, UKUNSPECIFIED
Dhomse, SandipUniv. of Leeds, Leeds, UKUNSPECIFIED
Hossaini, RyanLancasterUNSPECIFIED
Feng, WuhuUniv. of Leeds, Leeds, UKUNSPECIFIED
Santee, MichelleJPL, Paradana, CA, USAUNSPECIFIED
Burrows, John P.IUP BremenUNSPECIFIED
Loyola, DiegoDiego.Loyola (at) dlr.dehttps://orcid.org/0000-0002-8547-9350
Coldewey-Egbers, MelanieDLR-IMFhttps://orcid.org/0000-0002-9275-498X
Date:10 June 2018
Journal or Publication Title:Geophysical Research Letters
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:Yes
DOI :10.1029/2018GL078071
Page Range:pp. 1-9
Keywords:ozone, satellite observations, model simulation, lower stratosphere, ozone recovery
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Remote Sensing Technology Institute > Atmospheric Processors
Deposited By: Coldewey-Egbers, Melanie
Deposited On:13 Jun 2018 14:50
Last Modified:09 Jul 2018 23:10

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