Rain drop size distribution over the Tibetan Plateau

摘要: Abstract Over the last decade, interest in measuring and studying rain drop size distribution (DSD) has grown due to applications cloud physics, calibration of space-borne ground-based microwave active precipitation sensors soil science agriculture. Such studies are particular over remote areas, where knowledge clouds processes is lacking while need for sensing based estimates growing global water cycle climate trend studies. Disdrometric data Tibetan Plateau were collected during 2010 monsoon season using Pludix disdrometer, a vertically pointing, continuous wave, X-band, low power radar. Three experimental sites set up at altitudes greater than 3300 m a.s.l., total number 37 events measured two three sites. The analysis focuses on 2-min 5-min DSD selected convective stratiform results discussed comparison with previous performed lower altitudes. time evolution DSDs shows regular behavior respect intensity: they change concavity show breakup signature cases highest rates. Collisional takes place relatively rates, compared low-altitude measurements, largest drops also smaller. An overall rainfall characteristic evaluation whole set, deriving integral parameters order compute relationship between reflectivity rate, resulting A  = 214 (  = 247) b  = 1.25  = 1.15) (stratiform) precipitation.