Heat Module benchmarks
This page describes benchmarks performed for the Heat Stress Module.
The performed benchmark has an average difference below 0.70% for the selected measurement points.
Introduction
Results
The PET Benchmark result overlays can be seen below:
Point Measurement Analysis
Several points have been compared for results. These points across the map have been selected based on fact that their spatial situation (i.e. input data like foliage and vegetation fraction) is similar for both the Wageningen calculated PET and Tygron generated PET.
| id | Wageningen PET | Tygron PET | Difference (%) |
|---|---|---|---|
| 01 | 46.12 | 46.13 | 0.022 |
| 02 | 47.44 | 48.04 | 1.26 |
| 03 | 47.11 | 47.52 | 0.87 |
| 04 | 44.70 | 44.99 | 0.65 |
| 05 | 40.53 | 40.48 | -0.12 |
| 06 | 38.69 | 38.67 | -0.05 |
| 07 | 42.52 | 42.45 | -0.16 |
| 08 | 44.87 | 44.03 | -1.87 |
| 09 | 43.62 | 43.02 | -1.38 |
| 10 | 46.79 | 46.58 | -0.45 |
| 11 | 38.70 | 38.79 | 0.23 |
| 12 | 44.40 | 44.00 | -0.90 |
| 13 | 46.34 | 46.29 | -0.11 |
| 14 | 45.58 | 45.77 | 0.42 |
| 15 | 39.05 | 39.42 | 0.95 |
| 16 | 38.22 | 38.28 | 0.16 |
| 17 | 43.23 | 43.88 | 1.50 |
| 18 | 46.34 | 46.49 | 0.32 |
| 19 | 45.59 | 44.84 | -1.65 |
| 20 | 46.21 | 45.96 | -0.54 |
| Average | 0.68 |
So on average for points that in both cases have a similar spatial situation the difference in calculated PET is 0.68%.
Setup
The used values are:
| Variable | Value |
|---|---|
| Date | 02-08-2013 |
| Hour of day | 14 |
| Sun altitude | 55.5 |
| Sun azimuth | 186.9 |
| Sun daily motion factor | 0.063 |
| Humidity (%) | 56 |
| Sun radiation (W/m2) | 774 |
| Temperature (°C) | 31.7 |
| Wind speed (m/s) | 4 |
| Wind direction (°) | 140 |
| Daily min. temperature (°C) | 18.9 |
| Daily max. temperature (°C) | 34.1 |
| Daily avg. radiation (W/m2) | 455 |
| Daily avg. wind speed | 3.17 |
The foliage height will be defined by a Geotiff. See the images (overview and zoomed in east-south-east corner) below:
Calculation time
The calculation time of the PET overlay of 1 timeframe on a 1x1 meter grid for a 4x4km area of Wageningen is +-16 seconds.
See also
- For a more in depth variance analysis, see analysis;