HTAP3-OPNS: ozone, PM, nitrogen and sulphur deposition – multi-model experiments to support the revision of the CLRTAP Gothenburg Protocol

Butler, Tim; Ansari, Tabish; Belis, Claudio A.; Bergas-Masso, Elisa; van Caspel, Willem; Fagerli, Hilde; Flemming, Johannes; Garcia Vivanco, Marta; Griffiths, Paul; Hamilton, Douglas S.; Hernandez Trujillo, Coralina; Höglund-Isaksson, Lena; Huijnen, Vincent; Kaiser, Johannes W.; Koren, Gerbrand; Klimont, Zbigniew; Lindl, Florian; Lupascu, Aura; Mertens, Mariano; Schaap, Martijn; Turnock, Steven T.; Wild, Oliver; Weiss, Philipp; Kaminski, Jacek; Wu, Rosa; Keating, Terry

doi:10.5194/gmd-19-10023-2026

Articles | Volume 19, issue 20

https://doi.org/10.5194/gmd-19-10023-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/gmd-19-10023-2026

© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 19, issue 20

Model experiment description paper

|

21 Oct 2026

Model experiment description paper |

| 21 Oct 2026

HTAP3-OPNS: ozone, PM, nitrogen and sulphur deposition – multi-model experiments to support the revision of the CLRTAP Gothenburg Protocol

Tim Butler, Tabish Ansari, Claudio A. Belis, Elisa Bergas-Masso, Willem van Caspel, Hilde Fagerli, Johannes Flemming, Marta Garcia Vivanco, Paul Griffiths, Douglas S. Hamilton, Coralina Hernandez Trujillo, Lena Höglund-Isaksson, Vincent Huijnen, Johannes W. Kaiser, Gerbrand Koren, Zbigniew Klimont, Florian Lindl, Aura Lupascu, Mariano Mertens, Martijn Schaap, Steven T. Turnock, Oliver Wild, Philipp Weiss, Jacek Kaminski, Rosa Wu, and Terry Keating

Supplement

https://doi.org/10.5194/gmd-19-10023-2026-supplement

Data sets

Global gridded anthropogenic emissions of air pollutants and methane for the period 1990-2050 (V2.1) Z. Klimont et al. https://doi.org/10.5281/zenodo.14748815

CEDS v2017-08-30/2017-10-05 Aviation emissions with corrected geographical distribution after Thor et al., 2023 M. Mertens https://doi.org/10.5281/zenodo.13911489

Aviation emissions with corrected geographical distribution after Thor et al., 2023 M. Mertens et al. https://doi.org/10.5281/zenodo.13257451

HTAP3-Future-Fires-SSP245 by vegetation type E. Bergas-Massó and D. Hamilton https://doi.org/10.5281/zenodo.17644150

GFAS4HTAP vegetation fire emissions 2003-2023 J. W. Kaiser et al. https://doi.org/10.5281/zenodo.13753451

HTAP_v3.2 emission mosaic M. Crippa https://doi.org/10.5281/zenodo.7516360

Global background methane concentrations calculated in support of the HTAP3-OPNS exercise (1) W. van Caspel and H. Fagerli https://doi.org/10.5281/zenodo.14980849

Source region definitions for the HTAP3-OPNS multi-model exercise T. Butler https://doi.org/10.5281/zenodo.12654036

Model code and software

Supporting scripts for Butler et al., HTAP3-OPNS: Ozone, PM, Nitrogen and Sulphur Deposition - multi-model experiments to support the revision of the CLRTAP Gothenburg Protocol T. Ansari and T. Butler https://doi.org/10.5281/zenodo.23468124

Short summary

Air pollution travels across continents, meaning emissions in one region can affect air quality far away. To better understand this, scientists from many groups are planning to run coordinated computer simulations of the atmosphere. By comparing results across models and emission scenarios, the planned study will show how pollution moves between regions and which sources matter most, helping governments design more effective air quality policies.