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| Titel |
The MESSy aerosol submodel MADE3 (v2.0b): description and a box model test |
| VerfasserIn |
J. C. Kaiser, J. Hendricks, M. Righi, N. Riemer, R. A. Zaveri, S. Metzger, V. Aquila |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1991-959X
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| Digitales Dokument |
URL |
| Erschienen |
In: Geoscientific Model Development ; 7, no. 3 ; Nr. 7, no. 3 (2014-06-17), S.1137-1157 |
| Datensatznummer |
250115633
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| Publikation (Nr.) |
 copernicus.org/gmd-7-1137-2014.pdf |
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| Zusammenfassung |
We introduce MADE3 (Modal Aerosol Dynamics model for Europe, adapted
for global applications, 3rd generation; version: MADE3v2.0b), an
aerosol dynamics submodel for application within the MESSy framework
(Modular Earth Submodel System). MADE3 builds on the predecessor
aerosol submodels MADE and MADE-in. Its main new features are the
explicit representation of coarse mode particle interactions both
with other particles and with condensable gases, and the inclusion
of hydrochloric acid (HCl) / chloride (Cl) partitioning
between the gas and condensed phases. The aerosol size distribution
is represented in the new submodel as a superposition of nine
lognormal modes: one for fully soluble particles, one for insoluble
particles, and one for mixed particles in each of three size ranges
(Aitken, accumulation, and coarse mode size ranges).
In order to assess the performance of MADE3 we compare it to its
predecessor MADE and to the much more detailed particle-resolved
aerosol model PartMC-MOSAIC in a box model simulation of an
idealised marine boundary layer test case. MADE3 and MADE results
are very similar, except in the coarse mode, where the aerosol is
dominated by sea spray particles. Cl is reduced in MADE3 with
respect to MADE due to the HCl / Cl partitioning that
leads to Cl removal from the sea spray aerosol in our test
case. Additionally, the aerosol nitrate concentration is higher in
MADE3 due to the condensation of nitric acid on coarse mode
particles. MADE3 and PartMC-MOSAIC show substantial differences in
the fine particle size distributions (sizes ≲ 2 μm) that could be relevant when simulating climate effects on
a global scale. Nevertheless, the agreement between MADE3 and
PartMC-MOSAIC is very good when it comes to coarse particle size
distributions (sizes ≳ 2 μm), and also in terms
of aerosol composition. Considering these results and the
well-established ability of MADE in reproducing observed aerosol
loadings and composition, MADE3 seems suitable for application
within a global model. |
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