GPM Dual-Frequency Precipitation Radar

The GPM Dual-Frequency Precipitation Radar is a sophisticated satellite instrument that measures rainfall and snowfall worldwide. It uses two radio wave frequencies—Ku-band and Ka-band—to detect precipitation particles in clouds with high precision. By bouncing these signals off raindrops and snowflakes, the radar can determine their size, shape, and intensity. This dual-frequency approach provides more accurate and detailed data on precipitation types and amounts, helping meteorologists improve weather forecasting, monitor storms, and study climate patterns globally.