Heat Waves Amplify the Urban Canopy Heat Island in Brno, Czechia

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F86652079%3A_____%2F22%3A00570057" target="_blank" >RIV/86652079:_____/22:00570057 - isvavai.cz</a>
Alternative codes found
RIV/00216224:14310/22:00128032
Result on the web
<a href="https://www.mdpi.com/2674-0494/1/4/30" target="_blank" >https://www.mdpi.com/2674-0494/1/4/30</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/meteorology1040030" target="_blank" >10.3390/meteorology1040030</a>

Result language
angličtina
Original language name
Heat Waves Amplify the Urban Canopy Heat Island in Brno, Czechia
Original language description
This study used homogenised mean, maximum, and minimum daily temperatures from 12 stations located in Brno, Czechia, during the 2011–2020 period to analyse heat waves (HW) and their impact on the canopy urban heat island (UHI). HWs were recognized as at least three consecutive days with Tx ≥ 30 °C and urban–rural and intra-urban differences in their measures were analysed. To express the HWs contribution to UHI, we calculated the UHI intensities (UHII) separately during and outside of HWs to determine the heat magnitude (HM). Our results show that all HW measures are significantly higher in urban areas. UHII is mostly positive, on average 0.65 °C,however, day-time UHII is clearly greater (1.93 °C). Furthermore, day-time UHII is amplified during HWs, since HM is on average almost 0.5 °C and in LCZ 2 it is even 0.9 °C. Land use parameters correlate well with UHII and HM at night, but not during the day, indicating that other factors can affect the air temperature extremity. Considering a long-term context, the air temperature extremity has been significantly increasing recently in the region, together with a higher frequency of circulation types that favour the occurrence of HWs, and the last decade mainly contributed to this increase.
Czech name
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Czech description
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Project
<a href="/en/project/EF16_019%2F0000797" target="_blank" >EF16_019/0000797: SustES - Adaptation strategies for sustainable ecosystem services and food security under adverse environmental conditions</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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