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TOGA: Triple Doppler Radar Measurements from Aircraft

TOGA：飞机三重多普勒雷达测量

基本信息

批准号：
9112043
负责人：
David Raymond
金额：
$ 13.3万
依托单位：
New Mexico Institute of Mining and Technology
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
1992
资助国家：
美国
起止时间：
1992-02-15 至 1995-07-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=9112043&HistoricalAwards=false
关键词：
TOGA Triple Doppler Radar Measurements

项目摘要

This proposal is for the development of a technique to obtain triple Doppler Radar measurement of convective storms using aircraft radar alone. Airborne Doppler radars that make fore and aft conical scans, such as the recently modified NOAA P-3 radars and the NCAR ELDORA radar now under development, could be used with this technique. The advantage of triple over dual Dopper analysis is that all three components of precipitation particle velocity can be obtained. Using mass continuity to obtain vertical air motion, particle terminal velocity can be derived, which allows inferences to be made about precipitation growth. This technique also makes possible a superior estimate of vertical air motion at cloud top, which is needed to derive accurate vertical air velocities. This technique will be used to measure vertical mass fluxes and precipitation evolution in oceanic convective clouds during the intensive field phase of TOGA COARE. Both pieces of information are important in characterizing the convection in the COARE domain. A preliminary test of the technique will be made during the Tropical Cyclone Initiation experiment in July 1991 using a P-3 radar. Results of these measurements will be used to test a model development to predict the vertical fluxes of mass, heat, and moisture in cumulus clouds. This research is important because it is a key study in TOGA/COARE both to describe and understand the principal atmospheric processes that organize convection and to link those convective scale physical processes to the larger scales that affect climate variability in an especially climate sensitive region of the world, the western Pacific Ocean, the field site of TOGA/COARE.

该提案旨在开发一种技术，获得对流风暴的三重多普勒雷达测量结果只使用飞机雷达。机载多普勒雷达，前后锥形扫描，例如最近修改的NOAA P-3雷达和正在研制中的NCAR ELDORA雷达，使用这种技术。 Triple优于Dual 多普勒分析表明降水的三种成分可以获得颗粒速度。使用体量连续性获得垂直空气运动，颗粒终端速度可以是导出，这使得可以对降水量进行推断增长这种技术也使得上级估计成为可能云顶的垂直空气运动，这是推导准确的垂直气流速度这项技术将用于测量垂直质量通量和降水演变的海洋对流云 TOGA COARE的密集场阶段。这两项信息是重要的，在表征对流在 COARE域。将对这项技术进行初步试验在1991年7月的热带气旋形成实验中，使用P-3雷达这些测量的结果将用于测试模型发展预测的质量，热量和垂直通量，积云中的水分。这项研究很重要，因为它是一项关键的研究， TOGA/COARE描述和理解主要的组织对流的大气过程，对流尺度的物理过程，影响气候变化，特别是在气候敏感西太平洋地区， TOGA/COARE。