=Izaña Brewer calibration campaign=

In this campaign Brewer calibrated at high latitudes station during early spring conditions are calibrated at Izaña Atmospheric Observatory (IZO) three main objectives * Verify and compare the calibration performed at high ozone slant path conditions * Double vs Single monochromators comparison * Characterize the instruments at the IZO facilities

• Direct irradiance calibration

* To investigate the precision of the Langley Plot method. * Spectral UV comparison * Umkher retrieval

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! align=“center” style=“width:75px” | IZO ! align=“center” style=“width:100px” | Izaña ! align=“center” colspan=“2” | Altura: 2372.899