SNOWIE: DOW7 VAD Winds at Packer John. Version 1.0

The dataset consists of vertical profiles of horizontal winds derived from radar Plan Position Indicator (PPI) scans conducted at a 17° elevation angle. In cases where 17° data were unavailable, the highest available elevation angle was utilized. The wind profiles were obtained using the Vertical Azimuth Display (VAD) technique, which involves measuring the radial velocity of targets at various azimuth angles and applying a least square fitting procedure to extract the horizontal wind speed and direction as a function of altitude. This method assumes that the wind field is horizontally homogeneous over the radar sampling volume. For more details on the VAD technique, refer to Browning and Wexler (1968).

本数据集包含由雷达平面位置指示器（PPI）扫描获取的水平风垂直廓线，扫描仰角为17°；若17°数据不可用，则采用可用的最高仰角数据。风廓线通过垂直方位显示（VAD）技术获得，该技术通过测量不同方位角下目标物的径向速度，并应用最小二乘拟合程序提取随高度变化的水平风速和风向。此方法假设风场在雷达采样体积内呈水平均匀分布。关于VAD技术的更多细节，请参考Browning and Wexler (1968)。