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  Revised mineral dust emissions in the atmospheric chemistry-climate model EMAC (based on MESSy 2.52)

Klingmüller, K., Metzger, S., Abdelkader, M., Karydis, V., Stenchikov, G. L., Pozzer, A., et al. (2017). Revised mineral dust emissions in the atmospheric chemistry-climate model EMAC (based on MESSy 2.52). Geoscientific Model Development Discussions, 10.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-AFF5-B Version Permalink: http://hdl.handle.net/11858/00-001M-0000-002D-B004-4
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 Creators:
Klingmüller, K.1, Author              
Metzger, Swen, Author
Abdelkader, M.1, Author              
Karydis, V.1, Author              
Stenchikov, Georgiy L., Author
Pozzer, A.1, Author              
Lelieveld, J.1, Author              
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              

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 Abstract: To improve the aeolian dust budget calculations with the global ECHAM/MESSy atmospheric chemistry-climate model (EMAC) we have implemented new input data and updates of the emission scheme. The data set comprises landcover classification, vegetation, clay fraction and topography. It is based on up-to-date observations, which is crucial to account for the rapid changes of deserts and semi-arid regions in recent decades. The new Moderate-resolution Imaging Spectroradiometer (MODIS) based landcover and vegetation data is time dependent, and the effect of long-term trends and variability of the relevant parameters is therefore considered by the emission scheme. All input data has a spatial resolution of at least 0.1° compared to 1° in the previous version, equipping the model for high resolution simulations. We validate the updates by comparing results for the aerosol optical depth (AOD) at 550 nm wavelength from a one year simulation at T106 (about 1.1°) resolution with Aerosol Robotic Network (AERONET) and MODIS observations, and results for 10 μm dust AOD (DAOD) with Infrared Atmospheric Sounding Interferometer (IASI) retrievals. The update significantly improves agreement with the observations and is therefore recommended to be used in future simulations.

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Language(s): eng - English
 Dates: 2017
 Publication Status: Published in print
 Pages: 46
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.5194/gmd-2017-160
 Degree: -

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Title: Geoscientific Model Development Discussions
  Abbreviation : Geosci. Model Dev. Discuss.
Source Genre: Journal
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Publ. Info: Katlenburg-Lindau : Copernicus
Pages: 31 Volume / Issue: 10 Sequence Number: - Start / End Page: - Identifier: ISSN: 1991-962X
CoNE: /journals/resource/1991-962X