多普勒天气雷达原理与应用3 雷达图象识别基础ppt课件.ppt
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1、雷达图识别基础,反射率因子图,积云和层云混合降水回波积云降水回波其他回波,积云和层状云混合降水回波,层状云降水回波35dBZ,零度层亮带,Brightband Contamination,Radar Centered Arch of Higher Rainfall Accumulations on prouduct.,Overestimate rainfall But rare to affect convective flash flooding events,2007年3月3-4日北京雨转雪,20070304 北京降雪回波,非降水云的零度层亮带,积云对流降水回波,基反射率因子,2005年5
2、月31日14点47分在北京产生大冰雹的超级单体风暴,台风的回波,黑格比台风,边界层辐合线回波,海陆风环流,20070526 塘沽,雷州半岛海陆风辐合线,20050601 济南,2004年4月22日冷空气爆发(合肥雷达),鸟的回波,A single image (left) and a 10 hour accumulation (right) showing the impact of point targets on radar data quality. The white ellipses on the left shows the point targets which are pres
3、umably airplanes. Beijing CINRAD-SA 1.5,飞机的回波,海浪回波,Fig. 1. (top) Reflectivity and (bottom) Doppler velocity data collected on 2 Aug 2009 using the WSR -88D (KIN X) located near Tulsa, OK. The location of KIN X is indicated by the white circle. The departure of purple martins from a roosting site res
4、ulted in the ring-shaped region of echo located just west of Tulsa. The Doppler velocity data indicate radial motion outward from the roost at the center of the ring.,Fig. 7. An example of roost rings resulting from the emergence of Brazilian free-tailed bats in south-central Texas as observed in th
5、e non-QC composite reflectivity data produced through NM Q. The image corresponds to observations made at 0125 UT C (2025 CDT ) 25 Jun 2009 as the bats were dispersing from their roosts at dusk to feed on insects. Since these data were collected at dusk, sun spurs canalso be seen in the images. Also
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