Result type (Heat Overlay)

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The DPRA Heat Module of the Heat Overlay performs complex calculations and can generate multiple types of results per timeframe. A timeframe in the Heat Overlay corresponds to a date and time for which a result will be calculated. This date and time will be relative to the project's time zone.

List of Result Types

Icon Result type Unit Display mode Description
Overlay icon heat bowen ratio.png
BOWEN_RATIO ratio Date-Time The Bowen ratio of buildings and terrains. Is used to describe the type of heat transfer for a surface that has moisture.
Overlay icon heat foliage.png
FOLIAGE m Start The initial and optional calculated foliage height, depending on the source of the foliage height.
Overlay icon heat pet.png
PET °C Date-Time The calculated physiological equivalent temperature.
Overlay icon heat pet.png
PET_RELATIVE °C Date-Time The calculated physiological equivalent temperature, relative to the calculated atmospheric temperature.
Overlay icon heat shade.png
SHADE boolean Date-Time Indicates whether a cell is in the shade or not based on sun ray calculations.
Overlay icon heat sky view.png
SKY_VIEW fraction Start The calculated sky view factor.
Overlay icon heat sky view avg.png
SKY_VIEW_AVG fraction Start The calculated average of individual calculated sky view factors.
Overlay icon heat temperature atmosphere.png
TEMPERATURE_ATMOSPHERE °C Date-Time The calculated atmospheric temperature, based on the urban heat island, sun motion factor and the measured temperature.
Overlay icon heat uhi max.png
UHI °C Date-Time The calculated urban heat island effect.
Overlay icon heat vegetation.png
VEGETATION fraction Date-Time The fraction of vegetation per square meter.
Overlay icon heat vegetation avg.png
VEGETATION_AVG fraction Date-Time The calculated average vegetation based on the cells' individual vegetation fraction.
Overlay icon heat wind speed.png
WIND_SPEED m/s Date-Time The wind speed calculated for the height of 1.2 meters above ground.

Result types can differ in the kind of data they display and in what way that data is recorded. A result type can be monitoring the data in one of the following ways:

  • Start: The data is determined at the start of the simulation, and does not change over the course of multiple time steps.
  • Date-Time: The data is dependent on the timestep, which corresponds to a date and time.

Average result

When the AVERAGED_LAST_RESULT attribute is used, an additional timeframe will be added to the results containing the averaged results of all preceding timeframes.