Compare calculators
Both calculators run independently — change the inputs on either side to compare results.
Climate
Climate Normal Calculator
Compute a climate anomaly as the standardised z-score of a current value against the 30-year average and standard deviation. Values outside ±2 indicate statistically unusual conditions.
Fill in the required fields to see your result.
Climate
Solar Radiation Calculator
Estimate top-of-atmosphere solar irradiance at solar noon for a given latitude, day of year, and solar declination. Returns watts per square metre on a horizontal surface, before atmospheric attenuation.
Fill in the required fields to see your result.
Key differences
| Climate Normal Calculator | Solar Radiation Calculator | |
|---|---|---|
| Category | Climate | Climate |
| Inputs required | 3 | 3 |
| Result | Climate Anomaly (standard deviations) | Solar Radiation (W/m²) |
| What it does | Compute a climate anomaly as the standardised z-score of a current value against the 30-year average and standard deviation. Values outside ±2 indicate statistically unusual conditions. | Estimate top-of-atmosphere solar irradiance at solar noon for a given latitude, day of year, and solar declination. Returns watts per square metre on a horizontal surface, before atmospheric attenuation. |