Design, development and testing of a new low-cost and robust zenith-looking multi narrow-band radiometer for AOD retrieval.
A look-up table methodology for aerosol optical depth (AOD) retrieval from zenithal sky radiance has been developed and applied to AERONET Cimel sunphotometers from Santa Cruz de Tenerife, Izaña and Tamanrasset (Algeria) validating the results against AERONET AOD. The methodology has been applied to a new low-cost and robust zenith-looking multi narrow-band radiometer developed in collaboration with SIELTEC S.L. company. Estimated AOD with the new prototypes provide good results when validated against reference AOD from AERONET. At the moment we are working on the revision of a paper where the new instrument and the methodology are described in detail, and where evaluation results are assessed and discussed.