A multiyear analysis of aerosol optical thickness over Europe and Central Poland using NAAPS model simulation |
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Authors: | Aneta E Maciszewska Krzysztof M Markowicz Marcin L Witek |
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Institution: | (1) Environment Canada, Toronto, Canada;(2) WMO, Geneva, Switzerland; |
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Abstract: | This study contains a comparative analysis of aerosol optical thickness (AOT) between numerical calculations obtained from
the Navy Aerosol Analysis and Prediction System (NAAPS) model and direct observations from the AERONET robotic network and
the Saharan Aerosol over WArsaw (SAWA) field campaign. AOT was calculated for 500 nm wavelength. The comparison shows underestimation
of the total aerosol optical thickness simulated by NAAPS. The correlation coefficients between model and observation oscillates
between 0.57 and 0.72. Results of seven-year (1998–2004) NAAPS simulation of aerosol components (sea salt, mineral dust, sulphate,
and smoke) show large temporal and spatial variability of the aerosol optical thickness over Europe. The least polluted region
is the Iberian Peninsula, while the highest aerosol burdens occurred in Central Europe, mostly due to anthropogenic sulphate
particles. Finally, the analysis of mineral dust transport shows frequent episodes of Saharan dust inflow over Central Europe.
There are about 20 days a year (4 days in May) when instantaneous AOT associated with mineral dust aerosol increases over
0.1. |
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Keywords: | |
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