Thermal stress 2023
View on the mapBioclimatic stress on hot days per planning area: urban heat island effect, soil sealing, cooling by green space. Relevant for heat protection, especially for older people and the chronically ill.
Source
- Provider
- gdi.berlin.de
- Licence
- dl-de/zero
- Data as of
- January 2024
- Objects
- 542
Values
- Scale
- low to high (heat stress risk)
Calculation
Bioclimatic summer stress per LOR planning area from the Environmental Atlas 2023. An indicator of urban heat island effects and soil sealing.
- Aggregation
- LOR planning area
- Maintenance
- Senate Department for Urban Mobility, Transport, Climate Action and the Environment, Berlin Environmental Atlas (Umweltatlas)
- Update frequency
- every 5 years
Gaps in coverage
- Aggregate per planning area, the microclimate in courtyards is invisible.
Related layers
Frequently asked questions
PET is a bioclimatic indicator. It states which air temperature in an enclosed room would correspond to the perceived temperature outdoors. Wind, humidity and radiation feed into it. The value is suited to comparing heat stress across urban areas.
The German Weather Service (Deutscher Wetterdienst) counts a day with a maximum temperature of 30 degrees Celsius or more as a hot day. The number of hot days per year in Berlin has risen markedly since the 1990s, as documented in the 1991-2020 climate normal period.
A climate normal period is a 30-year reference period that the World Meteorological Organization uses to make weather averages comparable. For Berlin, we use the current period 1991-2020 as the basis for comparison.
Asphalt and stone store heat and release it again at night. Heavily sealed neighbourhoods cool down less well than neighbourhoods with vegetation or open water. The urban climate analysis treats sealing as one factor among several.