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 product suite includes three types of radar products: network-combined reflectivity, hybrid-scan reflectivity, and three-dimensional reflectivity. Combined reflectivity refers to the maximum reflectivity observed by radar in the vertical direction, and is used for monitoring nascent convective echoes and mature thunderstorms. Hybrid-scan reflectivity is generated by splicing data from multiple elevation angles based on beam occlusion conditions, and is applied to quantitative precipitation estimation and monitoring of the development dynamics of low-elevation echoes. Three-dimensional reflectivity refers to reflectivity factors on constant altitude planes, which is used to monitor the echo range, intensity and evolutionary characteristics at specific altitudes.

搜集汇总

背景与挑战

背景概述

全国天气雷达组网反射率产品是一个覆盖全国多个省份的公共事业气象数据集，包含组网组合反射率、混合扫描反射率和三维反射率三种类型，主要用于初生对流回波和成熟雷暴的监测、定量估测降水以及监测特定高度的回波演变。该数据集实时动态更新，数据存储总量达30 TB，增量约6 GB，适用于气象监测和降水预测等场景。