Using clustering to understand intra-city warming in heatwaves: insights into Paris, Montreal, and Zurich.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2FNO______%3A_____%2F24%3AN0000002" target="_blank" >RIV/NO______:_____/24:N0000002 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1088/1748-9326/ad456f" target="_blank" >https://doi.org/10.1088/1748-9326/ad456f</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1088/1748-9326/ad456f" target="_blank" >10.1088/1748-9326/ad456f</a>
Alternative languages
Result language
angličtina
Original language name
Using clustering to understand intra-city warming in heatwaves: insights into Paris, Montreal, and Zurich.
Original language description
We introduce a novel methodological advancement by clustering paired near-surface air temperature with the planetary boundary layer height to characterize intra-city clusters for analytics. To illustrate this approach, we analyze three heatwaves (HWs): the 2019 HW in Paris, the 2018 HW in Montreal, and the 2017 HW in Zurich. We assess cluster-based characteristics before, during, and after heatwave events. While the urban clusters identified by this clustering align well with built-up areas obtained from the Moderate Resolution Imaging Spectroradiometer (MODIS) land cover data, additional local hot spots spanning several kilometers can also be recognized, extending outside the built-up areas. Using the objective hysteresis model, we further determine the overall strength coefficient of the hysteresis loop between ground storage flux and all-wave downward radiative flux, ranging from 0.414 to 0.457 for urban clusters and from 0.126 to 0.157 for rural clusters during the heatwave periods. Across all cities, we observe a consistent refueling-restoration mode in the cumulative ground heat flux as the heatwaves progress. Future developments of this proposed two-component clustering approach, with the integration of more influential physics and advances in spatial and temporal resolutions, will offer a more comprehensive characterization of cities for urban climate analytics.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10509 - Meteorology and atmospheric sciences
Result continuities
Project
<a href="/en/project/TO01000219" target="_blank" >TO01000219: Turbulent-resolving urban modeling of air quality and thermal comfort</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Environmental Research Letters
ISSN
1748-9326
e-ISSN
1748-9326
Volume of the periodical
19
Issue of the periodical within the volume
May 2024
Country of publishing house
US - UNITED STATES
Number of pages
12
Pages from-to
064002
UT code for WoS article
001218737400001
EID of the result in the Scopus database
2-s2.0-85193215925