Characterization of the precipitation in southwestern part of Greece with X-band Doppler radar, 2-D video disdrometer and rain gauges

摘要

We document precipitation in the southwestern part of Greece with theNational Observatory of Athens (NOA) X-band radar, NOA 2D video disdrometerand a network of rain gauges. The observations were collected betweenFebruary and April 2004. Time evolution of the drop size distribution (DSD)is presented for the 9 March 2004 case where rain rate (computed on 1-minperiod) was measured up to 80 mm/h and reflectivity at the location of thedisdrometer exceeded 40 dBZ. We then present the differences of DSD asfunction of the rain rate for the studied case as well as for the entireobservations of the field experiment. It shows that higher the rain rate is,larger the range of the DSD and higher the concentration of the raindropsare.