多普勒雷达对台风“米雷”的探测和定位-海洋预报

多普勒雷达对台风“米雷”的探测和定位

单位：舟山市气象局, 浙江舟山 316021

分类号：P412.25

出版年·卷·期（页码）：2013·30·第五期（51-56）

摘要：

利用宁波雷达基数据资料,利用2004—2005年舟山新一代天气雷达台风基数据资料和浙江省自动测风站网资料拟合的适合舟山地区台风降水的Z—R关系,对“米雷”的降水进行雨量估测,结果比较接近实际雨量,极大地提高了由美国WSR-88D默认Z—R关系对台风暴雨的严重低估.分析了“逆风区”对“米雷”降水以及舟山北部地区二次降水影响的原因,并分析了产生误差的主要原因.
在对“米雷”定位过程中,发现了“眼的跳跃”现象的出现.剖析了“眼的跳跃”不仅仅出现在台风移近陆地时,当台风强度较弱,台风中心的气旋环流比较复杂,不受地形等因素影响,也可能会出现“眼的跳跃”现象.并以舟山多普勒雷达实时定位资料和中央台定位位置进行对比,发现了“眼的跳跃”具有1h的时间差异.

By fitting typhoon base data from zhoushan weather Doppler radar and data from auto weather stations in Zhejiang province from 2004 to 2005, a Z-R relation suiting for zhoushan area is derived. According to the Z-R relation, the precipitation induced by Meari is evaluated. As result shows, the evaluating value is close to the observed precipitation data, which greatly improved the value evaluated on Z-R relation that is offered by American WSR88D. In this paper, a relation between Backwind zone and rainfall caused by strom Meari and the forming reason of two heavy rainfall in Zhoushan is studied. Furthermore, variance analysis of evaluated precipitation and observed precipitation is discussed. When we are locating centre of Meari, jumping of Meari eye is observed. In our opinion, the phenomenon occurs not only when typhoons are close to land but also in the typhoon weakening stage on effect of typhoon inner factors and environmental circulation when typhoon eye circulation is complicated. We find that the jumping of eye exists 1 hour difference between the location from CCTV and the data from radar.

参考文献：

[1] Fu Q,Krueger S K, Liou K-N,et al. Interations of radiation andconvection in simulated tropical cloud clusters[J].J Atmos Sci,1995,52: 1311-1328.
[2] Pruppacher H R,Klett J D. Microphysics of Cloud and precipitation[M]. Boston:Kluwer Academic Publishers,1997.
[3] 何宽科、范其平,李开奇,等,舟山地区台风降水Z-R 关系研究及其应用.应用气象学报,2007,18(4):573-578.
[4] 俞小鼎、姚秀萍、熊廷南,等,多普勒天气雷达原理与业务应用. 气象出版社,2006 .
[5] 张沛源, 余志敏,王慕维.多普勤天气雷达资料在强天气短时预报中的应用[G]//第十一届亚运会气象保障研究论文集.北京:气象出版社, 1992:68-74.
[6] 张沛源, 陈荣林.多普勒速度图上的暴雨判据研究[J].应用气象学报,1995, 6(3):371- 374.
[7] 陈鲍发,魏鸣,柳守煜.逆风区的回波演变与强对流天气的结构分析.暴雨灾害,2008,27(2):127-134.
[8] 周仲岛,张保亮,李文兆.多普勒雷达在台风环流中尺度结构分析的应用[J].大气科学(台湾),1994,22:163-187.
[9] 赵放, 冀春晓,任鸿翔,等.应用多普勒雷达制作近海台风临近预报技术研究[J].气象,2008,34(5): 64-74.
[10] 许映龙,矫梅燕,毕宝贵,等.近海台风雷达定位方法应用研究[J].大气科学,2006,30(6):1119-1128.

服务与反馈：

【文章下载】【发表评论】【查看评论】【加入收藏】