Model attributes (Heat Overlay): Difference between revisions
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| [[Dates_(Heat_Overlay)|DATES]] | | [[Dates_(Heat_Overlay)|DATES]] | ||
| milliseconds | | milliseconds | ||
| Dates define the amount of timeframes and are used to define the day and time for calculating sun angles. | | Dates define the amount of timeframes and are used to define the day and time for calculating sun angles. | ||
|- | |- | ||
| [[Hourly_radiation_(Heat_Overlay)|HOURLY_RADIATION]] | | [[Hourly_radiation_(Heat_Overlay)|HOURLY_RADIATION]] | ||
| Wm<sup>-2</sup> / hr | | Wm<sup>-2</sup> / hr | ||
| The amount of Sun radiation this hour, measured at a weather station. | | The amount of Sun radiation this hour, measured at a [[Weather station (Heat Overlay)|weather station]]. | ||
|- | |- | ||
| [[Hourly_humidity_(Heat_Overlay)|HOURLY_HUMIDITY]] | | [[Hourly_humidity_(Heat_Overlay)|HOURLY_HUMIDITY]] | ||
| percentage | | percentage | ||
| The relative humidity of the air at this hour, measured at a weather station. | | The relative humidity of the air at this hour, measured at a [[Weather station (Heat Overlay)|weather station]]. | ||
|- | |- | ||
| [[Sun_daily_motion_(Heat_Overlay)|SUN_DAILY_MOTION]] | | [[Sun_daily_motion_(Heat_Overlay)|SUN_DAILY_MOTION]] | ||
| Line 24: | Line 24: | ||
| [[Hourly temperature (Heat Overlay)|HOURLY_TEMPERATURE]] | | [[Hourly temperature (Heat Overlay)|HOURLY_TEMPERATURE]] | ||
| °C | | °C | ||
| The temperature at this hour, measured at a weather station. | | The temperature at this hour, measured at a [[Weather station (Heat Overlay)|weather station]]. | ||
|- | |- | ||
| [[Wind speed (Heat Overlay)|WIND_SPEED]] | | [[Wind speed (Heat Overlay)|WIND_SPEED]] | ||
| m/s | | m/s | ||
| The wind speed measured at a weather station at the height of 10 meters above ground. | | The wind speed measured at a [[Weather station (Heat Overlay)|weather station]] at the height of 10 meters above ground. | ||
|- | |- | ||
| [[Wind direction (Heat Overlay)|WIND_DIRECTION]] | | [[Wind direction (Heat Overlay)|WIND_DIRECTION]] | ||
| | | [[Geo angle]] | ||
| The wind direction viewed from above, with 0° corresponding to | | The wind direction viewed from above, with 0° corresponding to north, and increasing in a clockwise fashion. | ||
|- | |- | ||
| [[Daily temperature min (Heat Overlay)|DAILY_TEMPERATURE_MIN]] | | [[Daily temperature min (Heat Overlay)|DAILY_TEMPERATURE_MIN]] | ||
| °C | | °C | ||
| Minimum temperature measured at a weather station. | | Minimum temperature measured at a [[Weather station (Heat Overlay)|weather station]]. | ||
|- | |- | ||
| [[Daily temperature max (Heat Overlay)|DAILY_TEMPERATURE_MAX]] | | [[Daily temperature max (Heat Overlay)|DAILY_TEMPERATURE_MAX]] | ||
| °C | | °C | ||
| Maximum temperature measured at a weather station. | | Maximum temperature measured at a [[Weather station (Heat Overlay)|weather station]]. | ||
|- | |- | ||
| [[Daily avg radiation (Heat Overlay)|DAILY_AVG_RADIATION]] | | [[Daily avg radiation (Heat Overlay)|DAILY_AVG_RADIATION]] | ||
| Wm<sup>-2</sup> / hr | | Wm<sup>-2</sup> / hr | ||
| The average of amount of | | The average of amount of sun radiation per hour per square meter for this day, measured at a [[Weather station (Heat Overlay)|weather station]]. | ||
|- | |- | ||
| [[ Daily avg wind speed (Heat Overlay)|DAILY_AVG_WIND_SPEED]] | | [[ Daily avg wind speed (Heat Overlay)|DAILY_AVG_WIND_SPEED]] | ||
Revision as of 14:51, 14 November 2019
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 |
|---|---|---|
| DATES | milliseconds | Dates define the amount of timeframes and are used to define the day and time for calculating sun angles. |
| HOURLY_RADIATION | Wm-2 / hr | The amount of Sun radiation this hour, measured at a weather station. |
| HOURLY_HUMIDITY | percentage | The relative humidity of the air at this hour, measured at a weather station. |
| SUN_DAILY_MOTION | factor | A factor used in calculating the Atmospheric Temperature from the calculated Urban Heat Island value. |
| HOURLY_TEMPERATURE | °C | The temperature at this hour, measured at a weather station. |
| WIND_SPEED | m/s | The wind speed measured at a weather station at the height of 10 meters above ground. |
| WIND_DIRECTION | Geo angle | The wind direction viewed from above, with 0° corresponding to north, and increasing in a clockwise fashion. |
| DAILY_TEMPERATURE_MIN | °C | Minimum temperature measured at a weather station. |
| DAILY_TEMPERATURE_MAX | °C | Maximum temperature measured at a weather station. |
| 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. |
| SUN_ALTITUDE | ° | The sun angle up from the horizon. |
| SUN_AZIMUTH | ° | The angle along the horizon, with 0° corresponding to North, and increasing in a clockwise fashion. |
Notes
- The sun altitude and azimuth are calculated automatically based on the project world location and the date.
- Some model attributes have to be based on a reference weather station.
- 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
- Building attributes
- Building elevation • Foliage height • Terrain elevation
- Related