Heat Stress Overlay: Difference between revisions

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==Wizard==
==Wizard==
De wizard is ook te openen. Deze heeft in stap 1 een datum tabel.
The Heat Wizard is available in the [[Ribbon Bar|Ribbon bar]].
* Per datum geeft je uren van de dag aan.
* Per uur van de dag geef je weer en zon waardes aan.
* De zonne hoeken (altitude en azimuth) kunnen automatisch worden berekend op basis van de project locatie en de tijd zone. De tijdzone halen wij ook op, op basis van de project locatie.


Stap 2 gaat over boomhoogtes. Bomen zijn vaak alleen ingetekend als stam, maar de kroon van de boom is juist belangrijkt. Daarom bieden wij 3 varianten aan:
In the first step data to determine the influence from the sun can be added.
* Op basis van BGT gebouwen die bomen representeren.
* Per date you can specify your hours of interest
Boom hoogte * boom kroon factor bepaald of de omringende cellen ook schaduw krijgen van de bladeren van de boom.
* For each hour you add weather and sun values
* Area geometriën aangeleverd als geojson of WFS service, waarin de boomhoogte per area staat
* 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.
* Geotiff, waar per cell de boomhoogte staat.
 
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==
==Calculations==

Revision as of 10:47, 22 July 2019

Example of the heat stress overlay

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.

Overlays

Several overlays with data that influence heat are available :

  • 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

Wizard

The Heat Wizard is available in the Ribbon bar.

In the first step data to determine the influence from the sun can be added.

  • Per date you can specify your hours of interest
  • 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

Overlays
Categorization
Grid • Parent • Result Child • Result Parent • Result type
Default
City
Administrative
Ownership • Ownership Grid • Zipcodes • Zoning • Neighborhoods • Municipalities • Vacancy
Environmental
Heat Stress • Traffic Density • Traffic Noise • Traffic NO2 • Livability • Aerius
Water
Rainfall • Flooding • Groundwater • Subsidence • Watershed • Waterwijzer
Raster Calculation
Average • Combo • Distance • Sight Distance • Travel Distance
Geo Data
Area • Attribute • GeoTIFF • WCS • WMS • Image
Topography
Digital Surface Model • Digital Terrain Model • Underground • Function • Source
Network
Network Distance • Network Overview • Network Ownership


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