• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Chinese science bulletin >Physical effect of cloud seeding revealed by NOAA satellite imagery
【24h】

Physical effect of cloud seeding revealed by NOAA satellite imagery

机译：NOAA卫星影像揭示了云播种的物理效应

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

From 0615 to 0749 UTC, 14 March 2000, a precipitation enhancement operation with Agl using an aircraft was conducted at the middle part of Shaanxi Province, China. 80 min after cloud seeding (0735 UTC), NOAA-14 satellite data showed a vivid zigzag cloud track on the satellite image. Its length is 301 km, and its average and maximum width are 8.3 and 11 km. The cloud track is very similar in shape with, but different in position and width from that of cloud seeding line. In order to determine that the cloud track is indeed caused by cloud seeding, a three-dimensional numerical model of transport and diffusion of seeding material is used to simulate the shape of seeding material concentration distribution, the turning points, width and length of seeding line. The simulated results are compared with the features of cloud track at 0735 UTC. Every segment of the cloud track is consistent with the transport and diffusion of every segment of seeding line. The transport position, length, width and the variation trend of seeding line agree with those of cloud track. All suggest that the cloud track is the direct physical reflection of cloud seeding effect OE the cloud top, which can respond to the transport and diffusion of seeding material. For this study case, the main effecting duration for every segment of seeding line is from 20 to 80 min, the time for each segment of seeding line diffusing to the maximum width is from about 50 to 70 min. This time is obtained from the appearing and disappearing time, width variation of the cloud track segments and simulated results. Also, the comparisons demonstrate that the numerical model of transport and diffusion can simulate the main characteristics of transport and diffusion of seeding material, and the simulating results are sound and trustworthy.
机译：从2000年3月14日UTC的0615到0749，在中国陕西省中部利用飞机进行了Agl的增雨作业。云播种（0735 UTC）后80分钟，NOAA-14卫星数据在卫星图像上显示了生动的锯齿状云迹。它的长度为301 km，平均和最大宽度分别为8.3和11 km。云道的形状与云播种线非常相似，但位置和宽度不同。为了确定云径迹确实是由播云引起的，使用了种子材料迁移和扩散的三维数值模型来模拟种子材料浓度分布的形状，种子线的转折点，宽度和长度。 。将模拟结果与0735 UTC的云迹特征进行了比较。云迹的每个部分都与播种线的每个部分的传输和扩散一致。播种线的运输位置，长度，宽度和变化趋势与云轨一致。所有这些都表明，云迹是云播种效应OE在云顶的直接物理反映，它可以响应播种材料的传输和扩散。对于此研究案例，播种线各段的主要影响持续时间为20至80分钟，播种线各段扩散至最大宽度的时间约为50至70分钟。该时间是从出现和消失的时间，云迹线段的宽度变化以及模拟结果中获得的。比较结果表明，运移与扩散的数值模型可以模拟种子材料运移与扩散的主要特征，模拟结果合理可靠。

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