The global aerosol-climate model echam6.3-ham2.3: Part 1: Aerosol evaluation

Ina Tegen, David Neubauer, Sylvaine Ferrachat, Colombe Siegenthaler Le Drian, Isabelle Bey, Nick Schutgens, Philip Stier, Duncan Watson-Parris, Tanja Stanelle, Hauke Schmidt, Sebastian Rast, Harri Kokkola, Martin Schultz, Sabine Schroeder, Nikos Daskalakis, Stefan Barthel, Bernd Heinold, Ulrike Lohmann

Research output: Contribution to JournalArticleAcademicpeer-review

Abstract

We introduce and evaluate aerosol simulations with the global aerosol-climate model ECHAM6.3-HAM2.3, which is the aerosol component of the fully coupled aerosol-chemistry-climate model ECHAM-HAMMOZ. Both the host atmospheric climate model ECHAM6.3 and the aerosol model HAM2.3 were updated from previous versions. The updated version of the HAM aerosol model contains improved parameterizations of aerosol processes such as cloud activation, as well as updated emission fields for anthropogenic aerosol species and modifications in the online computation of sea salt and mineral dust aerosol emissions. Aerosol results from nudged and free-running simulations for the 10-year period 2003 to 2012 are compared to various measurements of aerosol properties. While there are regional deviations between the model and observations, the model performs well overall in terms of aerosol optical thickness, but may underestimate coarse-mode aerosol concentrations to some extent so that the modeled particles are smaller than indicated by the observations. Sulfate aerosol measurements in the US and Europe are reproduced well by the model, while carbonaceous aerosol species are biased low. Both mineral dust and sea salt aerosol concentrations are improved compared to previous versions of ECHAM-HAM. The evaluation of the simulated aerosol distributions serves as a basis for the suitability of the model for simulating aerosol-climate interactions in a changing climate.

Original languageEnglish
Pages (from-to)1643-1677
Number of pages35
JournalGeoscientific Model Development
Volume12
Issue number4
DOIs
Publication statusPublished - 24 Apr 2019

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Climate models
Climate Models
Aerosol
Aerosols
climate modeling
aerosol
Evaluation
evaluation
sea salt
Climate
Salt
Dust
Minerals
dust
Model
Salts
aerosol property
Field Emission

Cite this

Tegen, I., Neubauer, D., Ferrachat, S., Drian, C. S. L., Bey, I., Schutgens, N., ... Lohmann, U. (2019). The global aerosol-climate model echam6.3-ham2.3: Part 1: Aerosol evaluation. Geoscientific Model Development, 12(4), 1643-1677. https://doi.org/10.5194/gmd-12-1643-2019
Tegen, Ina ; Neubauer, David ; Ferrachat, Sylvaine ; Drian, Colombe Siegenthaler Le ; Bey, Isabelle ; Schutgens, Nick ; Stier, Philip ; Watson-Parris, Duncan ; Stanelle, Tanja ; Schmidt, Hauke ; Rast, Sebastian ; Kokkola, Harri ; Schultz, Martin ; Schroeder, Sabine ; Daskalakis, Nikos ; Barthel, Stefan ; Heinold, Bernd ; Lohmann, Ulrike. / The global aerosol-climate model echam6.3-ham2.3 : Part 1: Aerosol evaluation. In: Geoscientific Model Development. 2019 ; Vol. 12, No. 4. pp. 1643-1677.
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abstract = "We introduce and evaluate aerosol simulations with the global aerosol-climate model ECHAM6.3-HAM2.3, which is the aerosol component of the fully coupled aerosol-chemistry-climate model ECHAM-HAMMOZ. Both the host atmospheric climate model ECHAM6.3 and the aerosol model HAM2.3 were updated from previous versions. The updated version of the HAM aerosol model contains improved parameterizations of aerosol processes such as cloud activation, as well as updated emission fields for anthropogenic aerosol species and modifications in the online computation of sea salt and mineral dust aerosol emissions. Aerosol results from nudged and free-running simulations for the 10-year period 2003 to 2012 are compared to various measurements of aerosol properties. While there are regional deviations between the model and observations, the model performs well overall in terms of aerosol optical thickness, but may underestimate coarse-mode aerosol concentrations to some extent so that the modeled particles are smaller than indicated by the observations. Sulfate aerosol measurements in the US and Europe are reproduced well by the model, while carbonaceous aerosol species are biased low. Both mineral dust and sea salt aerosol concentrations are improved compared to previous versions of ECHAM-HAM. The evaluation of the simulated aerosol distributions serves as a basis for the suitability of the model for simulating aerosol-climate interactions in a changing climate.",
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Tegen, I, Neubauer, D, Ferrachat, S, Drian, CSL, Bey, I, Schutgens, N, Stier, P, Watson-Parris, D, Stanelle, T, Schmidt, H, Rast, S, Kokkola, H, Schultz, M, Schroeder, S, Daskalakis, N, Barthel, S, Heinold, B & Lohmann, U 2019, 'The global aerosol-climate model echam6.3-ham2.3: Part 1: Aerosol evaluation' Geoscientific Model Development, vol. 12, no. 4, pp. 1643-1677. https://doi.org/10.5194/gmd-12-1643-2019

The global aerosol-climate model echam6.3-ham2.3 : Part 1: Aerosol evaluation. / Tegen, Ina; Neubauer, David; Ferrachat, Sylvaine; Drian, Colombe Siegenthaler Le; Bey, Isabelle; Schutgens, Nick; Stier, Philip; Watson-Parris, Duncan; Stanelle, Tanja; Schmidt, Hauke; Rast, Sebastian; Kokkola, Harri; Schultz, Martin; Schroeder, Sabine; Daskalakis, Nikos; Barthel, Stefan; Heinold, Bernd; Lohmann, Ulrike.

In: Geoscientific Model Development, Vol. 12, No. 4, 24.04.2019, p. 1643-1677.

Research output: Contribution to JournalArticleAcademicpeer-review

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T1 - The global aerosol-climate model echam6.3-ham2.3

T2 - Part 1: Aerosol evaluation

AU - Tegen, Ina

AU - Neubauer, David

AU - Ferrachat, Sylvaine

AU - Drian, Colombe Siegenthaler Le

AU - Bey, Isabelle

AU - Schutgens, Nick

AU - Stier, Philip

AU - Watson-Parris, Duncan

AU - Stanelle, Tanja

AU - Schmidt, Hauke

AU - Rast, Sebastian

AU - Kokkola, Harri

AU - Schultz, Martin

AU - Schroeder, Sabine

AU - Daskalakis, Nikos

AU - Barthel, Stefan

AU - Heinold, Bernd

AU - Lohmann, Ulrike

PY - 2019/4/24

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N2 - We introduce and evaluate aerosol simulations with the global aerosol-climate model ECHAM6.3-HAM2.3, which is the aerosol component of the fully coupled aerosol-chemistry-climate model ECHAM-HAMMOZ. Both the host atmospheric climate model ECHAM6.3 and the aerosol model HAM2.3 were updated from previous versions. The updated version of the HAM aerosol model contains improved parameterizations of aerosol processes such as cloud activation, as well as updated emission fields for anthropogenic aerosol species and modifications in the online computation of sea salt and mineral dust aerosol emissions. Aerosol results from nudged and free-running simulations for the 10-year period 2003 to 2012 are compared to various measurements of aerosol properties. While there are regional deviations between the model and observations, the model performs well overall in terms of aerosol optical thickness, but may underestimate coarse-mode aerosol concentrations to some extent so that the modeled particles are smaller than indicated by the observations. Sulfate aerosol measurements in the US and Europe are reproduced well by the model, while carbonaceous aerosol species are biased low. Both mineral dust and sea salt aerosol concentrations are improved compared to previous versions of ECHAM-HAM. The evaluation of the simulated aerosol distributions serves as a basis for the suitability of the model for simulating aerosol-climate interactions in a changing climate.

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