Probability of Cb and Tcu occurrence based upon radar and satellite observations

Ministerie van Verkeer en Waterstaat, Koninklijk Nederlands Meteorologisch Instituut, P. de Valk and R. van Westrhenen
De Bilt : KNMI

The detection of Cumulonimbi (Cb) and towering cumuli (Tcu) is relevant for aviation as they are associated with hazardous flight conditions. Their detection is therefore a requirement by ICAO. Since 1-8-2007 an operational algorithm, referred to as algorithm- 2007, is used at the airports EHBK and EHGG to detect Cb and Tcu. It uses the radar reflection observations and lightning observations as input. The performance of the algorithm-2007 is poor in terms of probability of detection (POD) and false alarm ratio (FAR). At KNMI this study was initiated to develop an improved algorithm.

60 p.
Fig., tab. ; 30 cm
(Scientific report = Wetenschappelijk rapport ; WR 2010-04)