On the Use of Advection Correction in Trajectory Calculations
On the Use of Advection Correction in Trajectory Calculations
复制标题
关于平流修正在轨迹计算中的应用
DOI：
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发表时间：
2015
期刊：
影响因子：
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通讯作者：
Leigh Orf
中科院分区：
文献类型：
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作者：
A. Shapiro;Stefan R. Rahimi;C. Potvin;Leigh Orf
抽象的对流校正程序用于减轻由网格（在时空）速度数据构建的轨迹分析中的时间插值错误。该过程基于Gal-Chen引入的技术，以减少针对数据收集的非同步性引起的雷达数据分析误差。使用来自高分辨率云模型1（CM1）数值模型的数据进行实验，该数据对代表俄克拉荷马州俄克拉荷马州El Reno的环境中的超级电池风暴初始化，tornadic Supercell风暴。将使用对流校正的轨迹分析与使用线性时间插值的传统轨迹分析进行了比较。向后轨迹在5分钟的时间内集成了一系列数据输入时间间隔，以及从不同分析子域大小（框宽度）和首先猜测选项中获得的速度 - 模式翻译估计值。对流校正的使用减少了大M ...的轨迹终点位置误差
AbstractAn advection correction procedure is used to mitigate temporal interpolation errors in trajectory analyses constructed from gridded (in space and time) velocity data. The procedure is based on a technique introduced by Gal-Chen to reduce radar data analysis errors arising for the nonsimultaneity of the data collection. Experiments are conducted using data from a high-resolution Cloud Model 1 (CM1) numerical model simulation of a supercell storm initialized within an environment representative of the 24 May 2011 El Reno, Oklahoma, tornadic supercell storm. Trajectory analyses using advection correction are compared to traditional trajectory analyses using linear time interpolation. Backward trajectories are integrated over a 5-min period for a range of data input time intervals and for velocity-pattern-translation estimates obtained from different analysis subdomain sizes (box widths) and first-guess options. The use of advection correction reduces trajectory end-point position errors for a large m...