|
|||||
|
|
| 用二步变分法反演的单多普勒雷达 风场研究中尺度暴雨 | |
| 引用本文： | 孙 宁,寿绍文,吴海英,陈 列,毛宇清.用二步变分法反演的单多普勒雷达 风场研究中尺度暴雨[J].气象科学,2009,29(6):768-774. |
| 作者姓名： | 孙 宁 寿绍文 吴海英 陈 列 毛宇清 |
| 作者单位： | 1. 南京信息工程大学气象灾害省部共建教育部重点实验室,南京,210044;南京信息工程大学大气科学学院,南京,210044 2. 南京市气象局,南京,210008 3. 浙江省气象局,杭州,310002 |
| 基金项目： | 国家自然科学基金项月，上海市自然科学基金项目 |
| 摘 要： | 采用二步变分法反演多普勒雷达风场来研究中尺度暴雨过程.首先采用多元最优插值方法将常规探空资料插值生成初始风场,在此基础上在不考虑背景场约束以及三维风场平滑量约束的条件下极小化目标函数,反演出的三维风场作为最终反演所需的背景场,然后再进行反演得到最终的三维风场.将最终反演结果与WRF模式模拟的结果进行对比检验,两者的一致表明此方法具有一定的可用性,并用得出的结果分析了2005年6月发生在江苏中部的一次中尺度暴雨过程,初步揭示了强降水中心形成的原因,印证了采用二步变分法反演多普勒雷达风场可以揭示出中小尺度降水的特征. |
| 关 键 词： | 二步变分法 反演 风场 中尺度暴雨 |
| 收稿时间： | 2008/5/13 0:00:00 |
Meso-scale rainstorm analysis by retrieved wind field from single Doppler radar using twi-adjoint method |
|
| Sun Ning,Shou Shaowen,Wu Haiying,Chen Lie,Mao Yuqing.Meso-scale rainstorm analysis by retrieved wind field from single Doppler radar using twi-adjoint method[J].Scientia Meteorologica Sinica,2009,29(6):768-774. | |
| Authors: | Sun Ning Shou Shaowen Wu Haiying Chen Lie Mao Yuqing |
| Abstract: | Twi-adjoint method has been used to retrieve wind field from single Doppler radar, then meso-scale rain storm depending on it was analyzed. First, we created initial wind field from routine sonde data using multivariate optimum interpolation, then on the basis of it, we make the aim-function infinitesimal without the background field restriction and the smoothness of three-dimensonal wind field restriction.Doing it again and adding the two disregarded restriction condition and adopting the retrieved three-dimensonal wind field as background field, we can get the three-dimensonal wind field finally.And then, we analyzed a meso-scale rain storm in the middle of Jiangsu province in June, 2005 by making use of the outcome.It can elementarily show us the reason why the strong rainfall center existed.At last, comparing the retrieved results to the outcomes of WRF model, it is found that they were almost the same.So, it can be explained that the twi-adjoint method could show the characters of meso-scale rainfall relatively clearly. |
| Keywords: | Twi-adjoint method Retrieval Wind field Meso-scale rain storm |
| 本文献已被 万方数据 等数据库收录！ | |
| 点击此处可从《气象科学》浏览原始摘要信息 | |
| 点击此处可从《气象科学》下载免费的PDF全文 | |