Articles | Volume 12, issue 4
Geosci. Model Dev., 12, 1643–1677, 2019
https://doi.org/10.5194/gmd-12-1643-2019
Geosci. Model Dev., 12, 1643–1677, 2019
https://doi.org/10.5194/gmd-12-1643-2019

Model evaluation paper 24 Apr 2019

Model evaluation paper | 24 Apr 2019

The global aerosol–climate model ECHAM6.3–HAM2.3 – Part 1: Aerosol evaluation

Ina Tegen et al.

Data sets

EUSAAR size distribution analysis database Ari Asmi, Alfred Wiedensohler, Paolo Laj, Ann-Mari Fjaeraa, Karine Sellegri, Wolfram Birmili, Ernst Weingartner, Urs Baltensperger, Vladimir Zdimal, Nadezda Zikova, Jean-Philippe Putaud, Angela Marinoni, Peter Tunved, Hans-Christen Hansson, Markus Fiebig, Niku Kivekäs, Heikki Lihavainen, Eija Asmi, V. Ulevicius, Pasi Aalto, Erik Swietlicki, Adam Kristensson, Nikos Mihalopoulos, N. Kalivitis, Ivo Kalapov, Guyla Kiss, Gerrit de Leeuw, Bas Henzing, Roy M. Harrison, David Beddows, Colin O'Dowd, Gerald S. Jennings, Harald Flentje, K> Weinhold, F. Meinhardt, L. Ries, and Markku Kulmala https://doi.org/10.1594/PANGAEA.861856

Short summary
We describe a new version of the aerosol–climate model ECHAM–HAM and show tests of the model performance by comparing different aspects of the aerosol distribution with different datasets. The updated version of HAM contains improved descriptions of aerosol processes, including updated emission fields and cloud processes. While there are regional deviations between the model and observations, the model performs well overall.