Description
Crop Heat Units (CHU) are calculated on a daily basis, using the maximum and minimum temperatures in order to account for a crop’s negative response to higher temperatures.
The formula used to calculate the CHU value for a day is:
(1.8 × (Minimum Temperature − 4.4) + 3.33 × (Maximum Temperature − 10) − 0.084 × (Maximum Temperature − 10)²) ÷ 2.0
CHU values are only accumulated during the Growing Season, April 1 through October 31.
Resources
| Name | Format | Description | Link |
|---|---|---|---|
| Agroclimate Interactive Maps (French) | HTML | Open resource | |
| Agroclimate Interactive Maps (English) | HTML | Open resource | |
| Pre-packaged GeoTIF files (No linguistic component) | Unknown | Open resource | |
| Data Product Specification (English) | Open resource | ||
| Using AAFC Climate Services (English) | Open resource | ||
| Data Product Specification (French) | Open resource | ||
| Using AAFC Climate Services (French) | Open resource | ||
| Crop (corn) heat units | Ersi REST | Open resource | |
| Crop (Corn) Heat Units | Ersi REST | Open resource |