An update on ozone profile trends for the period 2000 to 2016

Wolfgang Steinbrecht (1) , Lucien Froidevaux (2) , Ryan Fuller (2) , Ray Wang (3) , John Anderson (4) , Chris Roth (5) , Adam Bourassa (5) , Doug Degenstein (5) , Robert Damadeo (6) , Joseph Zawodny (6) , Stacey Frith (7, 8) , Richard Mcpeters (8) , Pawan Bhartia (8) , Jeannette Wild (9, 10) , Craig Long (9) , Sean Davis (11, 12) , Karen Rosenlof (12) , Viktoria Sofieva (13) , Kaley Walker (14) , Nabiz Rahpoe (15) , Alexei Rozanov (15) , Mark Weber (15) , Alexandra Laeng (16) , Thomas von Clarmann (16) , Gabriele Stiller (16) , Natalya Kramarova (8, 7) , Sophie Godin-Beekmann (17) , Thierry Leblanc (2) , Richard Querel (18) , Daan Swart (19) , Ian Boyd (20) , Klemens Hocke (21, 22) , Niklaus Kämpfer (22) , Eliane Maillard Barras (23) , Lorena Moreira (21, 22) , Gerald Nedoluha (24) , Corinne Vigouroux (25) , Thomas Blumenstock (26) , Matthias Schneider (26) , Omaira Garcìa (27) , Nicholas Jones (28) , Emmanuel Mahieu (29) , Dan Smale (18) , Michael Kotkamp (18) , John Robinson (18) , Irina Petropavlovskikh (30, 11) , Neil Harris (31) , Birgit Hassler (32) , Daan Hubert (25) , Fiona Tummon (33)

1 MOHp - Meteorologisches Observatorium Hohenpeißenberg
2 JPL - Jet Propulsion Laboratory
3 School of Earth and Atmospheric Sciences [Atlanta]
4 APS - Department of Atmospheric and Planetary Sciences [Hampton]
5 ISAS - Institute of Space and Atmospheric Studies [Saskatoon]
6 LaRC - NASA Langley Research Center [Hampton]
7 SSAI - Science Systems and Applications, Inc. [Lanham]
8 GSFC - NASA Goddard Space Flight Center
9 CPC - NCEP Climate Prediction Center
10 Innovim LLC
11 CIRES - Cooperative Institute for Research in Environmental Sciences
12 CSD - ESRL Chemical Sciences Division [Boulder]
13 FMI - Finnish Meteorological Institute
14 Department of Physics [Toronto]
15 IUP - Institute of Environmental Physics [Bremen]
16 IMK - Institute for Meteorology and Climate Research
17 STRATO - LATMOS
18 Lauder Atmospheric Research Station
19 RIVM - National Institute for Public Health and the Environment [Bilthoven]
20 Bc Scientific Consulting LLC
21 OCCR - Oeschger Centre for Climate Change Research
22 IAP - Institut für angewandte Physik [Bern]
23 Federal Office of Meteorology and Climatology MeteoSwiss
24 NRL - Naval Research Laboratory
25 BIRA-IASB - Belgian Institute for Space Aeronomy / Institut d'Aéronomie Spatiale de Belgique
26 IMK-IFU - Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung
27 IARC - Izaña Atmospheric Research Center
28 School of Chemistry [Wollongong]
29 Institut d'Astrophysique et de Géophysique [Liège]
30 GML - ESRL Global Monitoring Laboratory [Boulder]
31 Centre for Atmospheric Informatics and Emissions Technology
32 Bodeker Scientific
33 IAC - Institute for Atmospheric and Climate Science [Zürich]

Ozone profile trends over the period 2000 to 2016 from several merged satellite ozone data sets and from ground-based data by four techniques at stations of the Network for the Detection of Atmospheric Composition Change indicate significant ozone increases in the upper stratosphere, between 35 and 48 km altitude (5 and 1 hPa). Near 2 hPa (42 km), ozone has been increasing by about 1.5 % per decade in the tropics (20° S to 20° N), and by 2 to 2.5 % per decade in the 35° to 60° latitude bands of both hemispheres. At levels below 35 km (5 hPa), 2000 to 2016 ozone trends are smaller and not statistically significant. The observed trend profiles are consistent with expectations from chemistry climate model simulations. Using three to four more years of observations and updated data sets, this study confirms positive trends of upper stratospheric ozone already reported, e.g., in the WMO/UNEP Ozone Assessment 2014, or by Harris et al. (2015). The additional years, and the fact that nearly all individual data sets indicate these increases, give enhanced confidence. Nevertheless, a thorough analysis of possible drifts and differences between various data sources is still required, as is a detailed attribution of the observed increases to declining ozone depleting substances and to stratospheric cooling. Ongoing quality observations from multiple independent platforms are key for verifying that recovery of the ozone layer continues as expected.

Domaines: Physique Atmosphérique et Océanique [physics.ao-ph]

Wolfgang Steinbrecht, Lucien Froidevaux, Ryan Fuller, Ray Wang, John Anderson, et al.. An update on ozone profile trends for the period 2000 to 2016. Atmospheric Chemistry and Physics, 2017, 17 (17), pp.10675-10690. ⟨10.5194/acp-17-10675-2017⟩. ⟨insu-01517245⟩