Next Article in Journal
Precipitation Regime Changes at Four Croatian Meteorological Stations
Next Article in Special Issue
Computer Simulations of Air Quality and Bio-Climatic Indices for the City of Sofia
Previous Article in Journal
The Effect of Increased Ozone Levels on the Stable Carbon and Nitrogen Isotopic Signature of Wheat Cultivars and Landraces
Previous Article in Special Issue
Forecasting Particulate Pollution in an Urban Area: From Copernicus to Sub-Km Scale
Article

Future Climate Change Impact on Urban Heat Island in Two Mediterranean Cities Based on High-Resolution Regional Climate Simulations

1
Laboratory of Atmospheric Physics, School of Physics, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
2
Research Centre for Atmospheric Physics and Climatology, Academy of Athens, 84 Solonos St., 10680 Athens, Greece
3
Department of Environment, Municipality of Thessaloniki, Kleanthous 18, 54642 Thessaloniki, Greece
4
Department of Meteorology and Climatology, School of Geology, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
5
CNR-ISAC—Italian National Research Council, Institute of Atmospheric Science and Climate, via Fosso del Cavaliere 100, 00133 Rome, Italy
6
Department of Epidemiology, Regional Health Authority, 00147 Rome, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Zoltán Barcza
Atmosphere 2021, 12(7), 884; https://doi.org/10.3390/atmos12070884
Received: 11 June 2021 / Revised: 2 July 2021 / Accepted: 3 July 2021 / Published: 7 July 2021
(This article belongs to the Special Issue Urban Climate and Air Quality in Mediterranean Cities)
The Mediterranean is recognized among the most responsive regions to climate change, with annual temperatures projected to increase by 1–5 °C until 2100. Large cities may experience an additional stress discomfort due to the Urban Heat Island (UHI) effect. In the present study, the WRF-ARW numerical weather prediction model was used to investigate the climate change impact on UHI for two Mediterranean cities, Rome and Thessaloniki. For this purpose, three 5-year time-slice simulations were conducted (2006–2010, 2046–2050, 2096–2100) under the Representative Concentration Pathway (RCP) 8.5 emission scenario, with a spatial resolution of 2 km. In order to comprehensively investigate the urban microclimate, we analyze future simulation data across sections crossing urban/non-urban areas, and after grouping them into three classes depending on the location of the grid cells. The urban areas of both cities present increased average minimum temperature (Tmin) in winter/summer compared to other rural areas, with an UHI of ~+1.5–3 °C on average at night/early morning. Considering UHI under future climate change, we found no significant variations (~±0.2 °C). Finally, we found that the numbers of days with Tmin ≥ 20 °C will mostly increase in urban coastal areas until 2100, while the largest increase of minimum Discomfort Index (DImin) is expected in urban low-ground areas. View Full-Text
Keywords: Urban Heat Island; WRF; heat stress; future projections; climate change; discomfort index; urban microclimate; Mediterranean climate Urban Heat Island; WRF; heat stress; future projections; climate change; discomfort index; urban microclimate; Mediterranean climate
Show Figures

Figure 1

MDPI and ACS Style

Keppas, S.C.; Papadogiannaki, S.; Parliari, D.; Kontos, S.; Poupkou, A.; Tzoumaka, P.; Kelessis, A.; Zanis, P.; Casasanta, G.; de’Donato, F.; Argentini, S.; Melas, D. Future Climate Change Impact on Urban Heat Island in Two Mediterranean Cities Based on High-Resolution Regional Climate Simulations. Atmosphere 2021, 12, 884. https://doi.org/10.3390/atmos12070884

AMA Style

Keppas SC, Papadogiannaki S, Parliari D, Kontos S, Poupkou A, Tzoumaka P, Kelessis A, Zanis P, Casasanta G, de’Donato F, Argentini S, Melas D. Future Climate Change Impact on Urban Heat Island in Two Mediterranean Cities Based on High-Resolution Regional Climate Simulations. Atmosphere. 2021; 12(7):884. https://doi.org/10.3390/atmos12070884

Chicago/Turabian Style

Keppas, Stavros C., Sofia Papadogiannaki, Daphne Parliari, Serafim Kontos, Anastasia Poupkou, Paraskevi Tzoumaka, Apostolos Kelessis, Prodromos Zanis, Giampietro Casasanta, Francesca de’Donato, Stefania Argentini, and Dimitrios Melas. 2021. "Future Climate Change Impact on Urban Heat Island in Two Mediterranean Cities Based on High-Resolution Regional Climate Simulations" Atmosphere 12, no. 7: 884. https://doi.org/10.3390/atmos12070884

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop