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The average summer season intensity of urban heat island (°C) and the projected number of extreme heatwaves in near future (2020-2052; RCP8.5)

Figure Created 05 Aug 2020 Published 05 Aug 2020 Last modified 29 Jan 2023
2 min read
The map presents the projected number of exreme heatwaves in the near future across Europe and the summer intensity of the urban heat island effect in 100 European cities.

European data

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EEA standard re-use policy: unless otherwise indicated, re-use of content on the EEA website for commercial or non-commercial purposes is permitted free of charge, provided that the source is acknowledged (https://www.eea.europa.eu/legal/copyright). Copyright holder: European Environment Agency (EEA).
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European Environment Agency (EEA)
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Map

Additional information

The intensity of UHI was estimated for 100 European cities in the framework of the Copernicus European Health contract for the Copernicus Climate Change Service (C3S). High resolution (100m) hourly temperature (2008-2017) was simulated with the urban climate model UrbClim (De Ridder et al., 2015). Summer season is June, July and August. The intensity of UHI is represented by spatial P90 (90th percentile) UHI intensity of a given city. This indicator is calculated by subtracting the rural (non-water) spatial P10 (10th percentile) temperature value from the average, height-corrected (to exclude terrain effects), air temperature map. For information on individual cities and detailed modelling of the UHIs for the 100 European cities see the Urban Adaptation Map Viewer.
Source: Author’s compilation based on EEA (2019e) and VITO (2019)

Related content

Based on data

External Data Spec Projected number of extreme heatwaves (RCP 8.5; 2020-2052) Under the RCP8.5 scenario, very extreme heat waves ([10]) (much stronger than either the 2003 or the 2010 heat waves) are projected to occur as often as every two years in the second half of the 21st century (Figure 2). The projected frequency of heat waves is greatest in southern and south-eastern Europe. Russo, Simone, Alessandro Dosio, Rune G. Graversen, Jana Sillmann, Hugo Carrao, Martha B. Dunbar, Andrew Singleton, Paolo Montagna, Paulo Barbola, and Jürgen V. Vogt. Magnitude of Extreme Heat Waves in Present Climate and Their Projection in a Warming World, Journal of Geophysical Research: Atmospheres119, no. 22 (November 27, 2014): 12500–512. https://doi.org/10.1002/2014JD022098.
External Data Spec Urban heat Island summer intensity The intensity of UHI was estimated for 100 European cities in the framework of the Copernicus European Health contract for the Copernicus Climate Change Service (C3S). High resolution (100m) hourly temperature (2008-2017) was simulated with the urban climate model UrbClim (De Ridder et al., 2015). Summer season is June, July and August. The intensity of UHI is represented by spatial P90 (90th percentile) UHI intensity of a given city. This indicator is calculated by subtracting the rural (non-water) spatial P10 (10th percentile) temperature value from the average, height-corrected (to exclude terrain effects), air temperature map.

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For references, please go to https://www.eea.europa.eu/data-and-maps/figures/the-average-summer-season-intensity or scan the QR code.

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Filed under: climate change, adaptation
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