Satellite measurements of rain over Brazil

The video shows near-surface rain rates retrieved from the neural-network-based Hydronn precipitation retrieval. It compares it to Integrated Multi-satellitE Retrievals for GPM (IMERG), a commonly used global precipitation product. Because Hydronn uses observations from the GOES 16 geostationary satellite, it can produce retrievals every ten minutes, whereas IMERG data is only available half-hourly. The advantage of the high spatial and temporal resolution is visible in the results of Hydronn, which provides a much more precise and consistent picture of the organization of precipitation during the day.

The data shown is from 16 December 2020. A powerful mesoscale convective system develops in the early morning over Paraguay, Argentina, and southern Brazil, and its evolution can be followed throughout the day. An overpass of the GPM dual-frequency precipitation radar from that day is also included in the video to provide a reference.