Result types (Heat Overlay)

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	Mode	Description
	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.
	FOLIAGE	fraction	Start	The initial and optional calculated foliage height, depending on the source of the foliage height.
	PET	°C	Date-Time	The calculated physiological equivalent temperature.
	PET_RELATIVE	°C	Date-Time	The calculated physiological equivalent temperature, relative to the calculated atmospheric temperature.
	SHADE	boolean	Date-Time	Indicates whether a cell is in the shade or not based on sun ray calculations.
	SKY_VIEW	fraction	Start	The calculated sky view factor.
	SKY_VIEW_AVG	fraction	Start	The calculated average of individual calculated sky view factors.
	TEMPERATURE_ATMOSPHERE	°C	Date-Time	The calculated atmospheric temperature, based on the calculated urban heat island, sun motion factor and the measured temperature.
	UHI	°C	Date-Time	The calculated urban heat island effect.
	VEGETATION	fraction	Date-Time	The fraction of vegetation per square meter.
	VEGETATION_AVG	fraction	Date-Time	The calculated average vegetation based on the cells' individual vegetation fraction.
	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.

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Heat Module

Heat Module

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Result types

Result types

Atmospheric temperature • Bowen ratio • Foliage • Physiological equivalent temperature (PET) • Relative PET • Shade • Sky view •  Sky view average •  Urban heat island • Vegetation • Vegetation average • Wind speed

Related

Calculation models and formulas • Feature attributes • Model attributes • Result types