VDI/DIN-Commission on Air Pollution Prevention (KRdL) - Standards Committee
Air quality - Environmental meteorology - Part 4: Ground-based remote sensing of meteorological parameters - Particle backscatter lidar (ISO/DIS 28902-4:2025); Text in German and English
Abstract
This document describes the determination of height-resolved profiles of atmospheric backscattering by means of active optical sounding. The measurements allow the following properties of the atmosphere up to several kilometres above ground to be derived: - Cloud bases - Upper boundaries of optically thin clouds - Upper and lower boundaries and internal structures of particle layers: - The height of structures, e.g., inversions, boundary layer height, mixing layer height (under suitable conditions) - Attenuated backscatter of the particles - Backscatter coefficients of particles, extinction coefficients (requires further assumptions). The document goes on to discuss the depolarisation lidar and the use of multi-wavelength systems. This allows further parameters to be determined: - Particle size classification (Ångström exponent, colour ratio) - Shape classification (linear depolarisation degree) The following fields of application are particularly important: - Air quality monitoring (vertical structure of the boundary layer) - Aviation safety (cloud base and visual range) (see ISO 28902 Part 1) - Particle content and transport (e.g., volcanic dust) - Weather forecasting and climate modelling (e.g., atmospheric boundary layer, cloud base) - Satellite remote sensing (validation)
Begin
2024-12-03
Planned document number
DIN ISO 28902-4
Project number
13402189
Responsible national committee
NA 134-02-01-22 UA - Groundbased remote sensing of meteorological parameters
