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At the end of March 2006 a Cimel CE-318 sunphotometer was installed. It provides a characterization of aerosol optical and microphysical properties of the air column above the station. These measurements allow to follow the time evolution of the aerosol optical depth (AOD) at eight wavelengths, plus other properties as single scattering albedo (SSA, fundamental in computing the aerosol effects on solar radiation), particle size distribution (SD, fundamental in assessing the ABC effects on formation and lifetime of water vapor clouds) and refractive index.
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Sun photometer ( Cimel CE-318) measurements of the direct (collimated) solar radiation provide information to calculate the columnar aerosol optical depth (AOD). AOD can be used to compute columnar water vapor (Precipitable Water) and estimate the aerosol size using the Angstrom parameter relationship. Sunphotometer from March 2006 provides a characterization of aerosol optical and microphysical properties of the air column above the station. It is an automatic sun-tracking and sky radiometer for measuring the aerosol optical depth at 8 wavelengths between 340 and 1020 nm.