Meteonorm Observation
Accuracy
The accuracy of Meteonorm's satellite-based global radiation data is quantified using the relative Root Mean Square Error (rel. RMSE). The typical accuracy varies with the time resolution of the data.
| Time resolution | Typical Accuracy (rel. RMSE) |
|---|---|
| Hourly values | 20% |
| Daily values | 10% |
| Monthly values | 5% |
With these values, the accuracy of the satellite-derived data is comparable to that of high-quality ground-based pyranometers (radiation sensors), which typically falls within a 5-10% range. A key advantage of satellite-based datasets is their immunity to common issues that affect ground-based measurement systems, such as soiling or disruptions.
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