Nocturnal cooling in Local Climate Zone: Statistical approach using mobile measurements

Leconte, François; Bouyer, Julien; Claverie, Rémy

doi:10.1016/j.uclim.2020.100629

Cited by 24 publications

(12 citation statements)

References 24 publications

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“…Urban surface calculations that apply a combination of surface data and GIS-based or remote sensing-based concepts appear in a number of studies. In the LCZ mapping of the Nancy (France) urban area, the surface metadata gathered from field work and remote sensing sources were worked up by means of GIS tools (SAGA GIS), models (DSM) and manual calculations to obtain SVF, terrain roughness (Davenport calculations), building heights (from the national database of building footprints), ISF/PSF, and more [146][147][148]. A combination of models, such as SURY v1.0 (semi-empirical urban canopy parameterization), implemented in COSMO(-CLM) [149] or using topographic/aerial images [150] with the WUDAPT urban database platform, may produce high-resolution LCZ mapping.…”

Section: Combined Methodsmentioning

confidence: 99%

“…Deriving their conclusions from mobile measurements, Stewart et al [50] presented differences in the magnitudes of air temperature within the framework of LCZs. Several studies have used mobile measurements to detect T a patterns among built-up and land-cover LCZs, additionally coordinating their measurement campaigns with daytime and night-time periods of the day [97,142,[146][147][148], or with particular seasonal/extreme weather periods (e.g., summer season or heat-wave period) [75,96]. The results indicated distinct temperature differences between LCZs, with a tendency towards decreases towards the outskirts.…”

Section: Thermal Analysis Based On Mobile Measurementsmentioning

confidence: 99%

See 1 more Smart Citation

Mapping Local Climate Zones and Their Applications in European Urban Environments: A Systematic Literature Review and Future Development Trends

Lehnert

Savić

Milošević

et al. 2021

IJGI

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In the light of climate change and burgeoning urbanization, heat loads in urban areas have emerged as serious issues, affecting the well-being of the population and the environment. In response to a pressing need for more standardised and communicable research into urban climate, the concept of local climate zones (LCZs) has been created. This concept aims to define the morphological types of (urban) surface with respect to the formation of local climatic conditions, largely thermal. This systematic review paper analyses studies that have applied the concept of LCZs to European urban areas. The methodology utilized pre-determined keywords and five steps of literature selection. A total of 91 studies were found eligible for analysis. The results show that the concept of LCZs has been increasingly employed and become well established in European urban climate research. Dozens of measurements, satellite observations, and modelling outcomes have demonstrated the characteristic thermal responses of LCZs in European cities. However, a substantial number of the studies have concentrated on the methodological development of the classification process, generating a degree of inconsistency in the delineation of LCZs. Recent trends indicate an increasing prevalence of the accessible remote-sensing based approach over accurate GIS-based methods in the delineation of LCZs. In this context, applications of the concept in fine-scale modelling appear limited. Nevertheless, the concept of the LCZ has proven appropriate and valuable to the provision of metadata for urban stations, (surface) urban heat island analysis, and the assessment of outdoor thermal comfort and heat risk. Any further development of LCZ mapping appears to require a standardised objective approach that may be globally applicable.

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Section: Combined Methodsmentioning

confidence: 99%

Section: Thermal Analysis Based On Mobile Measurementsmentioning

confidence: 99%

Mapping Local Climate Zones and Their Applications in European Urban Environments: A Systematic Literature Review and Future Development Trends

Lehnert

Savić

Milošević

et al. 2021

IJGI

View full text Add to dashboard Cite

show abstract

“…Some of these studies have also pointed out the need for assessing the performance of the LCZs, rather than just confirming that they display different trends. More specifically, they have focused on evaluating whether the differences between LCZs are statistically significant (Beck et al, 2018;Fenner et al, 2017;Leconte et al, 2020;Richard et al, 2018), if they concentrate at certain times of the year or under specific meteorological conditions (Arnds et al, 2017;Thomas et al, 2014;Yang et al, 2018), or if other parameters might affect the LCZs inter-and intra-variability (Kotharkar et al, 2019;Kwok et al, 2019;Leconte et al, 2017). However, research on the topic is still scarce and limited to a specific climatic context (mostly Cf, humid and warm temperate climates), and in some cases is based on short datasets.…”

Section: Using Local Climate Zones For Contextualising and Characteri...mentioning

confidence: 99%

Hourly evolution of intra-urban temperature variability across the local climate zones. The case of Madrid

2021

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“…The rate of change (RC) was considered to investigate the thermal behavior of the parking lots over time, because this approach has been adopted in previous urban climate studies [41][42][43][44]. The analysis was based on the sixty-minute average temperature to calculate the hourly RC ( • C h −1 ) (Equations (2) and ( 3)):…”

Section: Key Performance Indicators Of Parking Lot Dynamicsmentioning

confidence: 99%

Experimental Comparative Study between Conventional and Green Parking Lots: Analysis of Subsurface Thermal Behavior under Warm and Dry Summer Conditions

et al. 2021

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Green infrastructure has a role to play in climate change adaptation strategies in cities. Alternative urban spaces should be designed considering new requirements in terms of urban microclimate and thermal comfort. Pervious pavements such as green parking lots can contribute to this goal through solar evaporative cooling. However, the cooling benefits of such systems remain under debate during dry and warm periods. The aim of this study was to compare experimentally the thermal behavior of different parking lot types (PLTs) with vegetated urban soil. Four parking lots were instrumented, with temperature probes buried at different depths. Underground temperatures were measured during summer 2019, and the hottest days of the period were analyzed. Results show that the less mineral used in the surface coating, the less it warms up. The temperature difference at the upper layer can reach 10 °C between mineral and non-mineral PLTs. PLTs can be grouped into three types: (i) high surface temperature during daytime and nighttime, important heat transfer toward the sublayers, and low time shift (asphalt system); (ii) high (resp. low) surface temperature during daytime (resp. nighttime), weak heat transfer toward the sublayers, and important time shift (paved stone system); and (iii) low surface temperature during daytime and nighttime, weak heat transfer toward the sublayers, and important time shift (vegetation and substrate system, wood chips system, vegetated urban soil). The results of this study underline that pervious pavements demonstrate thermal benefits under warm and dry summer conditions compared to conventional parking lot solutions. The results also indicate that the hygrothermal properties of urban materials are crucial for urban heat island mitigation.

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Nocturnal cooling in Local Climate Zone: Statistical approach using mobile measurements

Cited by 24 publications

References 24 publications

Mapping Local Climate Zones and Their Applications in European Urban Environments: A Systematic Literature Review and Future Development Trends

Mapping Local Climate Zones and Their Applications in European Urban Environments: A Systematic Literature Review and Future Development Trends

Hourly evolution of intra-urban temperature variability across the local climate zones. The case of Madrid

Experimental Comparative Study between Conventional and Green Parking Lots: Analysis of Subsurface Thermal Behavior under Warm and Dry Summer Conditions

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