全国天气雷达组网反射率产品

产品包括组网组合反射率、混合扫描反射率、三维反射率。组合反射率为垂直方向上雷达观测的最大反射率，用于初生对流回波及成熟雷暴的监测；混合扫描反射率根据波束遮挡情况选择不同仰角的数据拼接得到，用于定量估测降水及监测低层仰角回波的发展动态；三维反射率为等高面上的反射率因子，用于监测特定高度的回波范围、强度、演变情况。The dataset products include Networked Composite Reflectivity, Mixed-Scan Reflectivity, and 3-D Reflectivity. Networked Composite Reflectivity refers to the maximum reflectivity observed by radar in the vertical direction, which is used for monitoring nascent convective echoes and mature thunderstorms. Mixed-Scan Reflectivity is generated by stitching data from different elevation angles based on beam blockage conditions, and is used for quantitative precipitation estimation and monitoring the development and evolution of low-elevation angle echoes. 3-D Reflectivity is the reflectivity factor on constant-altitude planes, which is applied to monitor the scope, intensity and evolution of echoes at specific altitudes.

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背景与挑战

背景概述

全国天气雷达组网反射率产品包含组合反射率、混合扫描反射率和三维反射率三种数据，具有高时空分辨率（水平1千米，垂直500米，时间6分钟），覆盖全国范围，适用于气象监测和降水估测等多个应用领域。