The structure of the ground-level heatisland in a central business district
The use of airborne infrared scanner images indicates a heatisland core over Johannesburg with one nocturnal center, and a strong temperature gradient at about 600-700 m from the city center. The disjunction between the location of the heatisland
core and highest ground elevation of the central business district offers additional evidence for the relevance of the centrality factor as a distinct parameter in the description of heatisland core structure and magnitude. (JPB).
The urban heatisland of Dublin city during the summer months
Cloud ; Dublin ; Heatisland ; Ireland ; Summer ; Temperature ; Urban climate ; Urban density ; Weather type ; Wind speed
The summer temperature regime of Dublin city shows a marked diurnal variation due to numerous interlinked causes. At night, urban heatisland intensities of up to 8°C can be anticipated in calm, clear conditions. During the day, although the urban
heatisland phenomenon is generally absent, temperature contrasts of over 6°C can be expected for topographical reasons. Even with limited sunshine, sea-breezes will develop and affect coastal regions, and areas directly in the lee of hills
Relation between heatisland intensity and city size indices/urban canopy characteristics in settlements of Nagano Basin, Japan
City size ; Cloud cover ; Heatisland ; Honshu ; Japan ; Population density ; Temperature ; Urban climate ; Wind
This paper demonstrates the relation between the heatisland intensity and city size indices/urban canopy characteristics. This is accomplished by analyzing the data at 6 settlements on the Nagano basin. The AA. used population density, area
and their derivations in densely inhabited district as city size indices, and sky view factor, building land ratio and thermal admittance as urban canopy characteristics. Moreover, they examined the relation between the maximum heatisland intensity and the population
Heatisland ; Human impact ; Poland ; Temperature ; Urban climate ; Urban effect ; Warsaw
The aim of the study was to determine the air temperature changes resulting from urban influence. Daily and annual changes in the urban heatisland as well as its long-term variations are analysed. The temperature trends of the urban heatisland
by those of meteorological stations in the suburbs. Heatislands are recognised and described under the four groups: calm-light air clear night type, light breeze clear sky type, gentle-moderate breeze clear sky type, and cloudy type. (TNC).
Modeling effects of urban heatisland mitigation strategies on heat-related morbidity: a case study for Phoenix, Arizona, USA
Arizona ; Bioclimatology ; Decision making process ; Health ; Heatisland ; Human bioclimatology ; Modelling ; Morbidity ; Phoenix ; United States of America ; Urban climate
A historical review and assessment of urban heatisland research in Singapore
Climatic change ; Heatisland ; Research ; Seasonal variation ; Singapore ; Space time ; Urban area ; Urban climate ; Urbanization
in urban heatisland intensity and spatial coverage can be traced temporally. Rapid urban expansion is clearly reflected in spatially and temporally changing air and surface temperature patterns.
Dynamics and controls of the near-surface heatisland of Vancouver, British Columbia
British Columbia ; Canada ; Cloud ; Heatisland ; Human impact ; Seasonal variation ; Soil moisture ; Surface temperature ; Temperature ; Urban climate ; Vancouver ; Wind ; Years 1990-99
This study aims to deepen knowledge of the urban heatisland (UHI) of Vancouver by looking at its daily and seasonal variations and by taking a closer look at controls exerted by weather (wind speed and direction, and cloud) and the state
The summer climate of an Arctic coastal village : preliminary observations from the Barrow Urban HeatIsland Study
Air temperature ; Alaska ; Arctic Region ; Coastal environment ; Heatisland ; Summer ; United States of America ; Village ; Wind speed
Le village littoral de Barrow, Alaska, est le peuplement le plus septentrional des Etats-Unis. Avec 4600 résidents, il est aussi la plus grande communauté de la région circumarctique. L'installation du réseau de 67 sites Barrow Urban HeatIsland
Urban surface heat fluxes infrared remote sensing inversion and their relationship with land use types
ASTER ; Heat flow ; Heatisland ; Honshu ; Japan ; Land use ; Model ; Plant cover ; Remote sensing ; Temperature ; Town ; Urban climate
Using ASTER (Advanced Spaceborne Thermal Emission and Reflection Radiometer) infrared remote sensing data the AA. inversed the parameters of urban surface heat fluxes applying the PCACA model and theoretical position algorithm
, and then they analyzed the influence of different land use types on the surface heat fluxes and energy balance. In this study, Kumagaya, a city in Saitama Prefecture, Japan, was selected as the experimental area. The result shows that the PCACA model is feasible
for the surface heat fluxes estimation in urban areas because this model requires less parameters in the procedure of heat fluxes estimation in urban areas with complicated surface structure and can decrease the uncertainty. And they found that different land-use
types have indicated the height heterogeneity on the surface heat fluxes significantly.