VDI 4212:2017-05

This standard describes the passive DOAS remote sensing method which uses natural light sources. The method is primarily used for absorption spectroscopy in the UV, VIS and NIR spectral range. Set-up, operation, minimum requirements, calibration and data evaluation of passive DOAS systems and their application for the measurement of gaseous compounds (e.g. SO2, NO2, O3, HCHO, H2O, HONO) as well as aerosol characteristics in the atmosphere are explained. The method is illustrated by numerous examples.