• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Earth, planets and space: EPS >Wind observation around the tops of the midlatitude cirrus by the MU radar and Raman/Mie lidar
【24h】

Wind observation around the tops of the midlatitude cirrus by the MU radar and Raman/Mie lidar

机译：MU雷达和拉曼/米氏激光雷达在中纬卷云顶部观测风

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Using a 46.5-MHz atmospheric radar referred to as the MU radar (MUR) and a Raman/Mie lidar installed at the Shigaraki (34°51'N, 136°06'E), continuous wind motions around the tops of the midlatitude cirrus are described for the first time. The cloud system extended from the northeast to southwest (35°N-50°N) along the eastward-moving trough and passed over Shigaraki in the nighttime between 5-6 November 2004. Cloud-top altitude observed by the lidar was located at ～10.6 km around 1900 LST 5 November, then gradually descended to ～8.4 km around 0500 LST 6 November. The westerly wind observed by MUR with 12-min and 150-m resolutions showed a rapid increase with altitude around the cloud tops and was almost always larger than 25 m s-1 above ～1 km higher than the cloud tops. Objective reanalysis showed that a subtropical jet whose core existed to the south of Shigaraki caused a synoptic-scale vertical increase in the westerly wind around the cloud tops. Radiosondes observed a significant vertical increase of potential temperature (greater than 4 K within several hundred meters) around the cloud tops. MUR successfully observed fine time and altitude variations of winds which showed a good correspondence with the descending cloud tops.
机译：使用称为MU雷达（MUR）的46.5 MHz大气雷达和在Shigaraki（34°51'N，136°06'E）安装的拉曼/米氏激光雷达，围绕中纬度卷云顶部的连续风运动是第一次描述。云系统从东北向西南（35°N-50°N）沿向东移动的波谷延伸，并在2004年11月5日至6日的夜间越过了Shigaraki。激光雷达观测到的云顶高度位于〜 11月5日1900 LST左右约10.6公里，然后11月6日0500 LST约8.4公里。通过MUR观测到的12分钟和150m分辨率的西风显示出随着云顶周围高度的增加而迅速增加，并且几乎总是比云顶高1 km以上大于25 m s-1。客观的再分析表明，其中心位于Shigaraki南部的亚热带急流导致云顶周围西风的天气尺度垂直增加。无线电探空仪观察到云顶周围的潜在温度显着垂直上升（几百米内大于4 K）。 MUR成功地观测到风的精细时间和高度变化，这与降落的云顶表现出良好的对应关系。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号