Data product of spectral optical depth from 300 nm to 2100 nm.

This item consists of a dataset of direct solar irradiance data and atmospheric optical depth in the spectral range from 300 nm to 2150 nm obtained from a BTS/UVNIR and a BTS/IR specroradiometer in the period 1st January 2022 to 31 December 2023. The instruments were operated for the most part at the PMOD/WRC, while several weeks of measurements in September 2022 were performed at the high altitude observatory of Izaña, Tenerife, Canary Islands.