Improving Vertical Velocity Retrievals from Doppler Radar Observations of Convection

GSTDTAP

项目编号	1623626
	Improving Vertical Velocity Retrievals from Doppler Radar Observations of Convection
	Alan Shapiro
主持机构	University of Oklahoma Norman Campus
项目开始年	2017
	2017
项目结束日期	2019-12-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	599408(USD)
国家	美国
语种	英语
英文摘要	Weather radars have a variety of functions, from sensing severe weather to providing estimates of rainfall. One of the main duties of Doppler radar is to retrieve the horizontal wind field. However, in meteorology it is very important to know the vertical winds to determine how quickly air is rising or descending. Radar meteorologists have used a variety of methods to estimate vertical winds from radar data, but there is room for improvement. The researchers in this project will develop advanced techniques to improve analysis of the three dimensional wind field. The new techniques will benefit research studies on severe weather topics such as supercell thunderstorms and tornadoes as well as potentially improving the initialization of numerical weather models. The project will also help to train the next generation of scientists by including students in the data analysis. The research team will address several long-standing issues related to the processing and utilization of radar meteorology products. This award is focused on minimizing the errors due to non-simultaneous data collection and the derivation of vertical velocity from radar measurements. Data will be collected from a variety of radar and profiler systems at the Department of Energy's Atmospheric Radiation Measurement site in Oklahoma to address the following research tasks: 1) Designing a new spatially-variable advection-correction/analysis procedure to reduce errors in radial wind analyses, 2) Investigating the utility of the anelastic vertical vorticity equation as a constraint in variational dual-Doppler wind analysis, and 3) Investigating the advantages and disadvantages of ensemble Kalman filter (EnKF) wind analysis versus variational dual-Doppler wind analysis.
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/70697
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Alan Shapiro.Improving Vertical Velocity Retrievals from Doppler Radar Observations of Convection.2017.