Towards climate-responsible tree positioning: Detailed effects
of trees on heat exposure in complex urban environments

J 2024

Towards climate-responsible tree positioning: Detailed effects of trees on heat exposure in complex urban environments

JANKŮ, Zdeněk; Michal BELDA; Martin BUREŠ; Pavel KRČ; Michal LEHNERT et al.

Základní údaje

Originální název

Towards climate-responsible tree positioning: Detailed effects of trees on heat exposure in complex urban environments

Autoři

JANKŮ, Zdeněk; Michal BELDA; Martin BUREŠ; Pavel KRČ; Michal LEHNERT; Jaroslav RESLER; Hynek ŘEZNÍČEK; Eric Scott KRAYENHOFF; Eduardo KRÜGER a Jan GELETIČ

Vydání

Urban Forestry and Urban Greening, Elsevier GmbH, 2024, 1618-8667

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10509 Meteorology and atmospheric sciences

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 6.700

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/24:00137342

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Urban greenery; Universal thermal climate index (UTCI); Thermal comfort; Biometeorology; PALM; Pedestrian

Štítky

14315030, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 16. 10. 2024 12:18, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Increasing heat in urban environments has recently become one of the most dangerous climate hazards due to its adverse impacts on urban populations. Implementing street-level trees could be an effective strategy to mitigate pedestrian heat exposure, particularly due to their ability to block incoming solar radiation. In this study, the PALM model system was applied to simulate the effects of a tree canopy and its location on heat exposure, as quantified by the Universal Thermal Climate Index (UTCI), during a heat wave, using the example of Prague-Dejvice, Czech Republic. Our results show that trees reduce the UTCI under their canopy by 3.5 °C on average, with the greatest UTCI reduction in open spaces during mornings and afternoons. High spatio-temporal variations in the reduction of UTCI by a tree canopy were observed in the study domain, especially in street canyons and courtyards. The effectiveness of trees in mitigating heat exposure was found to be closely related to their individual location with respect to surrounding buildings, specifically: (i) the distance from the nearest building, (ii) the height of the nearest building, and (iii) the azimuthal angle of the vector from the nearest building towards the tree. Model simulations indicate that a particularly small reduction in UTCI (about 2.5 °C less than the mean) can be found under trees located in the shade of taller buildings that are within a few metres and between southwest and southeast of the trees. Our findings illustrate that tree positioning in cities should be undertaken carefully and thoughtfully so that the presence of trees effectively improves thermal comfort and urban quality of life.

Návaznosti

MUNI/A/1469/2023, interní kód MU

Název: Geografický výzkum společenských a přírodních procesů v období změn

Investor: Masarykova univerzita, Geografický výzkum společenských a přírodních procesů v období změn

90254, velká výzkumná infrastruktura

Název: e-INFRA CZ II

Citovat

JANKŮ, Zdeněk; Michal BELDA; Martin BUREŠ; Pavel KRČ; Michal LEHNERT; Jaroslav RESLER; Hynek ŘEZNÍČEK; Eric Scott KRAYENHOFF; Eduardo KRÜGER a Jan GELETIČ. Towards climate-responsible tree positioning: Detailed effects of trees on heat exposure in complex urban environments. Urban Forestry and Urban Greening. Elsevier GmbH, 2024, roč. 101, November 2024, s. 128500-128516. ISSN 1618-8667. Dostupné z: https://doi.org/10.1016/j.ufug.2024.128500.

@article{2443561,
   author = {Janků, Zdeněk and Belda, Michal and Bureš, Martin and Krč, Pavel and Lehnert, Michal and Resler, Jaroslav and Řezníček, Hynek and Krayenhoff, Eric Scott and Krüger, Eduardo and Geletič, Jan},
   article_number = {November 2024},
   doi = {https://doi.org/10.1016/j.ufug.2024.128500},
   keywords = {Urban greenery; Universal thermal climate index (UTCI); Thermal comfort; Biometeorology; PALM; Pedestrian},
   language = {eng},
   issn = {1618-8667},
   journal = {Urban Forestry and Urban Greening},
   title = {Towards climate-responsible tree positioning: Detailed effects of trees on heat exposure in complex urban environments},
   url = {https://www.sciencedirect.com/science/article/pii/S161886672400298X},
   volume = {101},
   year = {2024}
}

TY  - JOUR
ID  - 2443561
AU  - Janků, Zdeněk - Belda, Michal - Bureš, Martin - Krč, Pavel - Lehnert, Michal - Resler, Jaroslav - Řezníček, Hynek - Krayenhoff, Eric Scott - Krüger, Eduardo - Geletič, Jan
PY  - 2024
TI  - Towards climate-responsible tree positioning: Detailed effects of trees on heat exposure in complex urban environments
JF  - Urban Forestry and Urban Greening
VL  - 101
IS  - November 2024
SP  - 128500
EP  - 128500
PB  - Elsevier GmbH
SN  - 16188667
KW  - Urban greenery
KW  - Universal thermal climate index (UTCI)
KW  - Thermal comfort
KW  - Biometeorology
KW  - PALM
KW  - Pedestrian
UR  - https://www.sciencedirect.com/science/article/pii/S161886672400298X
N2  - Increasing heat in urban environments has recently become one of the most dangerous climate hazards due to its adverse impacts on urban populations. Implementing street-level trees could be an effective strategy to mitigate pedestrian heat exposure, particularly due to their ability to block incoming solar radiation. In this study, the PALM model system was applied to simulate the effects of a tree canopy and its location on heat exposure, as quantified by the Universal Thermal Climate Index (UTCI), during a heat wave, using the example of Prague-Dejvice, Czech Republic. Our results show that trees reduce the UTCI under their canopy by 3.5 °C on average, with the greatest UTCI reduction in open spaces during mornings and afternoons. High spatio-temporal variations in the reduction of UTCI by a tree canopy were observed in the study domain, especially in street canyons and courtyards. The effectiveness of trees in mitigating heat exposure was found to be closely related to their individual location with respect to surrounding buildings, specifically: (i) the distance from the nearest building, (ii) the height of the nearest building, and (iii) the azimuthal angle of the vector from the nearest building towards the tree. Model simulations indicate that a particularly small reduction in UTCI (about 2.5 °C less than the mean) can be found under trees located in the shade of taller buildings that are within a few metres and between southwest and southeast of the trees. Our findings illustrate that tree positioning in cities should be undertaken carefully and thoughtfully so that the presence of trees effectively improves thermal comfort and urban quality of life.
ER  -

JANKŮ, Zdeněk; Michal BELDA; Martin BUREŠ; Pavel KRČ; Michal LEHNERT; Jaroslav RESLER; Hynek ŘEZNÍČEK; Eric Scott KRAYENHOFF; Eduardo KRÜGER a Jan GELETIČ. Towards climate-responsible tree positioning: Detailed effects of trees on heat exposure in complex urban environments. \textit{Urban Forestry and Urban Greening}. Elsevier GmbH, 2024, roč.~101, November 2024, s.~128500-128516. ISSN~1618-8667. Dostupné z: https://doi.org/10.1016/j.ufug.2024.128500.

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