Comparison between an independently retrieved aerosol optical depth and AERONET estimations

1. Obregón, M.A.
2. Serrano, A.
3. Cancillo, M.L.
4. Toledano, C.
5. Cachorro, V.E.

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Abstract

Aerosol optical depth is the main primary parameter to quantify the load of atmospheric aerosols. It can be estimated from radiometric measurements performed at ground level. This study is aimed at developing and validating an alternative algorithm for the retrieval of aerosol optical depths at different wavelengths from original measurements of the sun photometer CIMEL #341 installed in Cáceres (Spain). The estimations resulting from this alternative algorithm have been validated by comparison to spectral aerosol optical depth retrieved by AERONET (AErosol RObotic NETwork) version 2 direct sun algorithm. A good agreement between the aerosol optical depths calculated by the two algorithms is obtained for all channels, being the differences lower than the uncertainty of the measurements.

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