| 利用双多普勒雷达资料对一次台风流场结构的分析 |
| |
| 引用本文： | 段云霞,邵爱梅,杨毅.利用双多普勒雷达资料对一次台风流场结构的分析[J].高原气象,2010,29(1):187-196. |
| |
| 作者姓名： | 段云霞 邵爱梅 杨毅 |
| |
| 作者单位： | 半干旱气候变化教育部重点实验室/兰州大学 大气科学学院, 甘肃 兰州730000 |
| |
| 基金项目： | 国家973项目(2004CB418305);;国家自然科学基金项目(40505022)资助 |
| |
| 摘 要： | 应用Qiu等提出的两步变分反演法,由厦门、长乐两部雷达观测资料反演0604号台风"碧利斯"登陆福建霞浦前的风场,并利用反演的水平风场检验几种常用的台风涡旋模型对此次台风的合理性,以期对雷达资料应用于台风过程分析和模拟有更进一步的认识。结果表明,两步变分法可以较好地反演出台风的水平、垂直风场特征,水平风场呈现不对称性且有明显的偏心结构,流场随高度表现出漏斗形特征,垂直风速与水平流场对应较好,台风中心有下沉气流,外围有上升气流。通过对台风物理量的分析发现,此次台风过程存在以最大风速半径随高度向外倾斜的主环流圈和低层向中心流入,高层向外流出的次环流圈。利用反演的水平风场对常用的对称风场涡旋模型进行了验证,发现在最大风速圈内取Rankine模式,最大风速圈外取Chen3模式对此次台风过程拟合较好。
|
| 关 键 词： | 多普勒雷达 台风反演 流场结构 风场模型 |
Analysis on Three-Dimension Wind Fields for a Typhoon Process Using Dual-Doppler Radar |
| |
| DUAN Yun-xia,SHAO Ai-mei,YANG Yi.Analysis on Three-Dimension Wind Fields for a Typhoon Process Using Dual-Doppler Radar[J].Plateau Meteorology,2010,29(1):187-196. |
| |
| Authors: | DUAN Yun-xia SHAO Ai-mei YANG Yi |
| |
| Affiliation: | Key Laboratory for Semi-Arid Climate Change of the Ministry of Education/College of Atmospheric Sciences;Lanzhou Univeisity;Lanzhou 730000;China |
| |
| Abstract: | A two-step variational method proposed by Qiu et al. is employed to retrieve three-dimension wind fields before 0604 typhoon Bilis making landfall at Xiapu,Fujian Province,in which dual-Doppler radar observations located at Xiamen and Changle are used. By utilizing the retrieval horizontal wind to test the rationality of the common typhoon vortex model,hoping to further recognize the radar data in applying to analyze and simulate typhoon process. The results show the method has ability to retrieve the horiz... |
| |
| Keywords: | Doppler radar Typhoon retrieve Stream structure Wind model |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《高原气象》浏览原始摘要信息 |
|
点击此处可从《高原气象》下载全文 |
|
