气象学报Issue(4)：772-781,10.DOI:10.11676/qxxb2014.054
单多普勒天气雷达反演降水粒子垂直速度Ⅱ：实例分析
The precipitation particles' vertical velocity retrieval with single Doppler weather radar
摘要
Abstract
A key problem in the 3-dimensional wind retrieval by using Doppler radar radial velocity is the vertical velocity re-trieval,in this paper the Modified Volume Velocity Processing (MVVP)method on which the vertical wind velocity retrieval is based is analyzed and the solving equations are improved.The MVVP method is examined by using the simulative data to deter-mine the appropriate velocity range,and it is applied in the severe convection and the typhoon cases.The results show that MVVP method is not sensitive to random errors in the radial velocity.The accuracy of retrieval is the same at the different ele-vations.Furthermore,the performance of retrieval is good in the cases with small random error or the large wind velocity.The retrieval results of a severe convection occurred at the Guangzhou station demonstrate that the vertical velocity of precipitation particles in a convective cell can be exactly obtained by the MVVP method.It indicates that the fall velocity increases during the dissipation process of the mesoscale cyclone and the distribution of precipitation particles tends to fast fall,which is consisted with the wind shear around the mesoscale cycle.Thus the change of rain can be estimated according to the fall velocity of pre-cipitation particles.For Typhoon Saomai (2006),the downdraft in the typhoon eye and the updraft-downdraft alternatively in the eye-wall can be retrieved.In the eye area,the strongest downdraft is located at the height of 7-8 km.In the contrary,ver-tical velocities are smaller at the upper and lower levels.The performance of the MVVP method shows that the vertical move-ment of particles can be retrieved exactly,which is helpful to reveal the details of severe weather,and to improve the precipita-tion location forecast.关键词
单多普勒天气雷达/改进的体积速度处理(VVP)方法/垂直速度/强对流/“桑美”台风Key words
Single Doppler weather radar/Modified VVP method/Vertical velocity/Severe convection/Typhoon Saomai (2006)分类
天文与地球科学引用本文复制引用
周生辉,魏鸣,张培昌,徐洪雄,张明旭..单多普勒天气雷达反演降水粒子垂直速度Ⅱ：实例分析[J].气象学报,2014,(4):772-781,10.基金项目
资助课题江苏省普通高校研究生科研创新计划项目（CXZZ120501、CXLX120501）、国家重点基础研究发展计划973项目（2013CB430102）、江苏省高校自然科学重大基础研究项目（10KJA170030）、国家高技术研究发展计划863项目（2007AA061901、2012AA091801）、公益性行业（气象）科研专项（GYHY201206038、GYHY201306040）、灾害天气国家重点实验室开放课题（2013LASW-B16）、北极阁基金（BJG201208）、中国气象局2014年关键技术项目（CMAGJ2014M21）、航空科学基金项目（201320R2001）、水利部公益性行业科研专项（201201063）、国家自然科学基金项目（41165008）。 （）
