DIN ISO 28902-4:2025-03
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 / Note: Date of issue 2025-02-14
| Fecha edición: |
2025-03-01
En Vigor
|
|---|---|
| Idiomas disponibles: | Alemán, Inglés |
| Resumen: | 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) |
| Keywords: | Aerosols|Air quality|Back-scattering|Clouds|Definitions|Environmental testing|Fog|LIDAR|Light detection and ranging|Light emission|Mathematical calculations|Measuring techniques|Meteorological measurement|Meteorological observatories|Meteorology|Natural lighting|Night|Optics|Particulate matter measurement|Pollution control|Specification (approval)|Testing|Visibility |
| ICS: | 07.060 - Geología. Meteorología. Hidrología, 13.040.20 - Aire ambiente |
| CTN: |
Normas citadas
Libros relacionados
Normas relacionadas
Colecciones temáticas relacionadas
