GPM Ground Validation network

The GPM (Global Precipitation Measurement) Ground Validation network is a team of scientists and machines that verify satellite rainfall data. They use ground-based instruments like weather radars and rain gauges to collect precise measurements of precipitation (rain, snow, etc.). This data helps scientists ensure that satellite observations are accurate, improving weather forecasts and climate studies worldwide. Essentially, the network acts as a quality control system, bridging satellite data with real-world measurements to refine our understanding of global rainfall patterns.