Japan Blue Radar Observation at Ping-Tung June 10, 2008 Lei Feng 2, Tetsuya Sano 1, Tsung-Jung Lee 2, Satoshi Endo 1 and Ben Jong Dao Jou 3 1.Hydrosheric Atmospheric Research Center, Nagoya University 2.National S&T Center for Disaster Reduction (NCDR) 3.National Taiwan University Properties of Japan Blue Radar Transmitting frequency 9375 MHz (X-band) Peak transmitting power 40 kW Pulse length 0.5 sec Pulse repetition frequency 2000 Hz Beam width 1.2 Range gate width 250 m Maximum range of data processing 64 km Nyquist velocity 16 m/s Doppler processing Pulse-pair processing Site Information National Ping-Tung University Latitude N Longitude E Altitude 117 m 13 PPIs + 1 RHI: 0.4, 1.0, 1.7, 2.5, 3.5, 4.8, 6.6, 8.7, 11.5, 15.2, 19.7, 25.6, 32.8 Data List (I) Data List (II) Data List (III) PPI mode RHI mode Data deficit by tape change 0130 UTC 0145 UTC on June UTC 0745 UTC on June 2 Period 1945 UTC on June 1, 2008 1315 UTC on June 2, 2008 On June 2, 2008 No DATA by shadow area of the observation Overview 1) 2015 UTC 2345 UTC on June 1 Precipitating system which extended from Northwest to Southeast moved from Southwest to Northeast. 2) 0200 UTC 0600 UTC on June 2 Precipitating system which extended from Southwest to Northeast moved from Northwest to Southeast. 3) 0530 UTC 0630 UTC on June 2 Precipitating system with arc shape moved from Southwest to Northeast. 4) 0630 UTC 1315 UTC on June 2 Stratiformprecipitation maintained and covered the observation area. Reflectivitys contour : 10 dBZ, 20 dBZ and and every 5 dBZ over 20 dBZ Velocitys contour : every 2 m/s Terrains contour : 10 m, 50 m, 100 m, 150m, 200m, 300m, 400m and with purple color 500m Precipitating system which extended from SW to NE Precipitating cell developed. Doppler velocity toward JDOP developed at 2 4 km height. Reflectivitys contour : 10 dBZ, 20 dBZ and and every 5 dBZ over 20 dBZ Velocitys contour : every 2 m/s Terrains contour : 10 m, 50 m, 100 m, 150m, 200m, 300m, 400m and with purple color 500m Precipitating system with arc shape The precipitating system was constructed by convective region and sratiform region. Reflectivitys contour : 10 dBZ, 20 dBZ and and every 5 dBZ over 20 dBZ Velocitys contour : every 2 m/s Terrains contour : 10 m, 50 m, 100 m, 150m, 200m, 300m, 400m and with purple color 500m Stratiform Precipitation Convective system embeded the stratiform precipitation occurred over the sea. Reflectivitys contour : 10 dBZ, 20 dBZ and and every 5 dBZ over 20 dBZ Velocitys contour : every 2 m/s Terrains contour : 10 m, 50 m, 100 m, 150m, 200m, 300m, 400m and with purple color 500m Stratiform Precipitation The convective system propagated in the stratiform precipitation with strong Doppler velocity under 2 km height.