https://atmos.meteo.uni-koeln.de/ag_crewell/ 2026-04-27T10:49:20+00:00 https://atmos.meteo.uni-koeln.de/ag_crewell/ https://atmos.meteo.uni-koeln.de/ag_crewell/lib/exe/fetch.php?media=wiki:logo.png text/html 2026-02-03T08:58:07+00:00 Anonymous (anonymous@undisclosed.example.com) https://atmos.meteo.uni-koeln.de/ag_crewell/doku.php?id=instruments:joyrad94:joyrad94&rev=1770109087&do=diff Cloud Radar JOYRAD-94 Mentor: A. Walbröl Principle The cloud radar JOYRAD-94 is a Frequency Modulated Continuous Wave (FMCW) Radar that transmits saw tooth frequency chirps at 94 GHz. In this way, vertical profiles of reflectivity, Doppler velocity, Doppler spectral width are detected from 150 m to 10 km above ground. Given these measurements, information on the macrophysical (cloud boundaries, type of cloud particles) and microphysical (e.g., liquid and ice water content) properties of the d…