Aerosol optical depth over the Arctic: a comparison of ECHAM-HAM and TM5 with ground-based, satellite and reanalysis data

We compare ground-based measurements of aerosol optical depth and Ångström parameter at six Arctic stations in the period 2001–2006 with the results from two global aerosol dynamics and transport models, ECHAM-HAM and TM5. Satellite measurements from MODIS and the MACC reanalysis product are used to...

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Bibliographic Details
Published in:Atmospheric Chemistry and Physics
Main Authors: von Hardenberg, J., Vozella, L., Tomasi, C., Vitale, V., Lupi, A., Mazzola, M., van Noije, T. P. C., Strunk, A., Provenzale, A.
Format: Article in Journal/Newspaper
Language:English
Published: Copernicus Publications 2012
Subjects:
article
Verlagsveröffentlichung
Arctic
Online Access:https://doi.org/10.5194/acp-12-6953-2012
https://noa.gwlb.de/receive/cop_mods_00050341
https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00049955/acp-12-6953-2012.pdf
https://acp.copernicus.org/articles/12/6953/2012/acp-12-6953-2012.pdf
Description
Summary:We compare ground-based measurements of aerosol optical depth and Ångström parameter at six Arctic stations in the period 2001–2006 with the results from two global aerosol dynamics and transport models, ECHAM-HAM and TM5. Satellite measurements from MODIS and the MACC reanalysis product are used to examine the spatial distribution and the seasonality of these parameters and to compare them with model results. We find that both models provide a good reproduction of the Ångström parameter but significantly underestimate the observed AOD values. We also explore the effects of changes in emissions, model resolution and the parametrization of wet scavenging.

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