Google Upgrades WeatherNext 3 for 1-Hour Forecasts as Satellite Data Cuts Lag
Updated
Updated · Ars Technica · Sep 8
Google Upgrades WeatherNext 3 for 1-Hour Forecasts as Satellite Data Cuts Lag
3 articles · Updated · Ars Technica · Sep 8
Summary
WeatherNext 3 now ingests satellite weather data, letting Google issue hourly forecasts instead of relying on updates tied to six-hour reanalysis snapshots.
Nearly all AI weather models have depended on reanalyses—global atmospheric snapshots that can lose detail from raw observations and leave a longer gap between current conditions and new forecasts.
Google also raised the model’s spatial resolution and expanded the machine-learning system, while adjusting processes to contain the added computing load.
A separate model trained on satellite-based precipitation estimates adds another rainfall forecast stream, underscoring how AI weather systems are moving closer to traditional models’ use of raw data.