GPM IMERG — Global Precipitation Half-Hourly
Global ~10 km half-hourly precipitation estimate fusing GPM core observatory + constellation passive-microwave radiometers + geostationary IR. Three latencies: Early (4 h), Late (14 h), Final (3 months). Used as flash-flood antecedent input and global storm validation.
| Provider | NASA / JAXA |
|---|---|
| Delivery mode | stream |
| CNR score | 70 |
| Cadence | PT30M |
| Origin | https://gpm.nasa.gov/data/imerg |