Model attributes (Heat Overlay)
The heat overlay's model calculations depend on a number of calculation-wide parameters. These parameters are available as attributes of the heat overlay and can be modified as such.
| Attribute | Unit | Description |
|---|---|---|
| AVERAGED_LAST_RESULT | boolean | Whether to ignore the date-time setting for the last calculated timeframe, and show an average of the results of all preceding timeframes instead. |
| DAILY_AVG_RADIATION | Wm-2 / hr | The average of amount of sun radiation per hour per square meter for this day, measured at a weather station. |
| DAILY_AVG_WIND_SPEED | m/s | The daily average wind speed measured at a weather station at the height of 10 meters above ground. |
| DAILY_TEMPERATURE_MAX | °C | Maximum temperature measured at a weather station. |
| DAILY_TEMPERATURE_MIN | °C | Minimum temperature measured at a weather station. |
| DATES | timestamp | Dates define the amount of timeframes and are used to define the day and time for calculating sun angles. |
| EXCLUDE_BUILDINGS | boolean | |
| EXCLUDE_WATER | boolean | |
| FOLIAGE_AREAS | boolean | |
| HOURLY_HUMIDITY | percentage | The relative humidity of the air at this hour, measured at a weather station. |
| HOURLY_RADIATION | Wm-2 / hr | The amount of Sun radiation this hour, measured at a weather station. |
| HOURLY_TEMPERATURE | °C | The temperature at this hour, measured at a weather station. |
| SUN_ALTITUDE | ° | The sun angle up from the horizon. |
| SUN_AZIMUTH | Geo angle | The angle along the horizon, with 0° corresponding to north, and increasing in a clockwise fashion |
| SUN_DAILY_MOTION | factor | A factor used in calculating the Atmospheric Temperature from the calculated Urban Heat Island value. |
| WIND_DIRECTION | Geo angle | The wind direction viewed from above, with 0° corresponding to north, and increasing in a clockwise fashion. |
| WIND_SPEED | m/s | The wind speed measured at a weather station at the height of 10 meters above ground. |
Notes
- The model relies on a number of attributes which can be measured by measure stations. For any given project, it is recommended to find data from a (reference) weather station applicable to the project area, and use those values as parameters for the Heat Module calculations.
- Group
- Model attributes
- Daily average radiation • Daily average wind speed • Daily maximum temperature • Daily minimum temperature • Dates • Exclude buildings • Exclude water • Exclude foliage height m • Foliage areas • Hourly humidity • Hourly radiation • Hourly temperature • Max shadow distance • Sun altitude • Sun azimuth • Sun daily motion • Wind direction • Wind speed • Wind decline angle
- Building attributes
- Building elevation • Foliage height • Terrain elevation
- Related