Microphysical and optical properties of a wave-cirrus cloudsampled during the INCA experiment
Year: 2002
Type: conference-paper
Abstract: During the first field experiment in the Southern hemisphere within the international INCA project (Interhemispheric differences in cirrus properties from anthropogenic emissions) a wave-cirrus cloud was sampled by the instrumented Falcon aircraft operated by DLR and by the ground-based Lidar system operated by AWI near Punta Arenas (Chile). On the 13 April 2000, strong Westerly wind (35 m/s) over the Magallanes mountains induced a persistent wave-cirrus in the vicinity of the Punta Arenas site. The aircraft observations were co-located with the vertical profiles of the backscattering properties obtained from the Lidar system. The cirrus cloud microphysical and optical properties were inferred from the PMS FSSP-300 and 2D-C probes and the Polar Nephelometer. A quite good agreement is found between the in situ and remotely-sensed measurements in terms of water phase (water droplets or ice crystals) and extinction coefficient. Unusual high density of small non-spherical ice particles (up to 100 cm-3 with an effective diameter of 11 micrometers) inducing very large extinction coefficient (up to 15 km-1) have been evidenced.
Institution: Université Blaise Pascal
Language: English
Subfield: Global and Planetary Change
Field: Environmental Science
Domain: Physical Sciences
Open Access status: green
Funder: European Commission
OpenAlex ID: W2278298598