In May 2018, the LOTUS report was accepted for publication by the SPARC review panel and it will be published in early 2019.
The accepted draft is available upon request. Table of Contents and Executive Summary can be downloaded here.
Please cite this report as
SPARC/IO3C/GAW, 2019: SPARC/IO3C/GAW report on Long-term Ozone Trends and Uncertainties in the Stratosphere. I. Petropavlovskikh, S. Godin-Beekmann, D. Hubert, R. Damadeo, B. Hassler, V. Sofieva (Eds.), SPARC Report No. 9, WCRP-17/2018, GAW Report No. 241, doi:10.17874/f899e57a20b, available at http://www.sparc-climate.org/publications/sparc-reports.