Heat Stress Overlay: Difference between revisions

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We are working on a new heat module in accordance to the new Dutch DPRA standards. This module is still under construction, as is the documentation, however a Beta version of the module is available on the Preview server for our partners.  
[[File:DPRA_Heatstress_overlay.PNG|thumb|420px|right|Example of the DPRA heat stress overlay]]
The new Heat Stress [[Overlay]] module is in accordance with the 2019 {{Heat DPRA Report}}.


==Overlays==
==Modules==
Several overlays with data that influence heat are available :
In order to configure a Heat Stress Overlay, a module has to be selected. The module can be configured by opening the Heat Overlay Wizard.
* The PET map (real feel temperature, wind chill). In accordance to the DPRA guideline: https://ruimtelijkeadaptatie.nl/stresstest/bijsluiter/hitte/pet-hittekaart/
* Foliage (map with tree heights)
* Shade
* Average Sky View
*      Sky view (percentage sky view in relation to total view),
* UHI (Urban heat island effect)
*      Temperature of atmosphere
* Vegetation average
* Vegetation (yes/no))
* Bowen ratio (evaporation ratio)
* Wind speed


De  overlays are calculated by our cuda module
The selectable modules are:
* [[DPRA Heat Module|DPRA Heat stress module]]. This module is more detailed and based on the 2019 {{Heat DPRA Report}}. It can generate multiple Heat Overlay [[Result type (Heat Overlay)|result types]] as child overlays;
* [[UNESCO Heat Module|UNESCO Heat stress module]]. This module generates a simple heat stress overlay which visualizes the [[Pet_relative_result_type_(Heat_Overlay)|Relative Physiological equivalent temperature]] result type. It uses a different (and smaller) set of formula's to calculate Heat differences. It does not calculate the expected Physiological Equivalent Temperature.


==Wizard==
[[File:Heatstress_overlay.PNG|thumb|420px|right|Example of the UNESCO heat stress overlay]]
The Heat Wizard is available in the [[Ribbon|Ribbon bar]].
{{Template:Heat_Module_buttons}}


In the first step data to determine the influence from the sun can be added.
==Notes==
* Per date you can specify your hours of interest
* The Heat Stress overlay present in the [[Climategame]] uses the [[UNESCO Heat Module|UNESCO Heat stress model]].
* For each hour you add weather and sun values
* the sun angles (altitude en azimuth) can be calculated automatically based on the project location and time zone. The Platform collects data on the time zone based on project location.
 
In Step 2 data is added to determine the influence of trees.  Trees are often only drawed and caculated by its trunk, however its crown is most important. That is why this module offers three options to choose from:
* Based on the BGT (buildings that represent trees). Tree height multiplied by 'tree crown factor' determines wheterh the surrounding cells are in the shade.
* Area geometries can be added from geojson or  WFS service: this data must contain the tree height per area.
* A Geotiff can be added which contains the tree height per cell
 
==Calculations==
Heat is calculated in accordance to the Dutch standard for heat stress:
https://ruimtelijkeadaptatie.nl/stresstest/bijsluiter/hitte/


==How-to's==
==How-to's==
* [[FAQ (Heat Overlay)|FAQ for Heat Overlay]]
* [[How-to add and remove an overlay|Add and remove an overlay]]
* [[How-to add and remove an overlay|Add and remove an overlay]]
* [[How-to edit an overlay legend|Edit an overlay legend]]
* [[How-to edit an overlay legend|Edit an overlay legend]]


{{Template:Overlay nav}}
{{Template:Overlay nav}}
\[[File:Heatstress_overlay.PNG|thumb|420px|right|Example of the heat stress overlay]]

Revision as of 15:28, 20 December 2019

Example of the DPRA heat stress overlay

The new Heat Stress Overlay module is in accordance with the 2019 DPRA Heat stress report.

Modules

In order to configure a Heat Stress Overlay, a module has to be selected. The module can be configured by opening the Heat Overlay Wizard.

The selectable modules are:

Example of the UNESCO heat stress overlay


Notes

How-to's