Dual Polarization Radar Observations, Analysis and Retrievals of Convective Lifecycle during RELAMPAGO

GSTDTAP

项目编号	1661863
	Dual Polarization Radar Observations, Analysis and Retrievals of Convective Lifecycle during RELAMPAGO
	V. Chandrasekar
主持机构	Colorado State University
项目开始年	2017
	2017-08-15
项目结束日期	2021-07-31
资助机构	US-NSF
项目类别	Continuing grant
项目经费	20868(USD)
国家	美国
语种	英语
英文摘要	Traditionally meteorological radars have observed storms using single polarization to measure the intensity and velocity within storms. Past research has shown that significantly more information about the storms, their particle types, and stage of evolution can be gleamed from using two orthogonal polarizations in radars. This research focuses on the dual-polarization radar observations during the RELAMPAGO experiment in west Central Argentina. This region has among the most intense convective systems in the world in terms of frequency of large hail, very high storm tops, and extreme lightning activity, yet much remains unknown about the intense convection in this region. Because of the repeatability of storms in the region, this experiment will observe these storms to address science questions related to the initiation, initial organization/severe-weather generation, and growth stages of storm development, which are poorly understood. This research will improve the understanding of, and the ability to predict, severe convective storms worldwide. Similar environments exist in many parts of the world including the US Rocky Mountains and Asia (such as Chengdu basin in China and Himalayan plains on the Indian subcontinent). The radar techniques developed from this project has the potential to benefit all the nationwide deployment of dual-polarization radars in the US. This project will specifically address the analysis and retrieval of dual-polarization radar observations in some of the most intense convective storms, developing advanced retrieval techniques. The RELAMPAGO field observation set up will elucidate the tight connections between the, complex terrain, and the production of severe weather, role of terrain in initiating and developing organized convective storms and resultant intensity. Development and application of advanced radar techniques, specially using frequency domain procedures, to identify the type of precipitation particles in the storm is an important part of this project.
来源学科分类	Geosciences - Atmospheric and Geospace Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/71492
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	V. Chandrasekar.Dual Polarization Radar Observations, Analysis and Retrievals of Convective Lifecycle during RELAMPAGO.2017.