A tale of two cities: The influence of urban meteorological network design on the nocturnal surface versus canopy heat island relationship in Oklahoma City, OK, and Birmingham, UK

2020 ◽  
Author(s):  
Jia‐Li Feng ◽  
Xiao‐Ming Cai ◽  
Lee Chapman
Keyword(s):  
Network Design ◽  
Oklahoma City ◽  
Heat Island ◽  
Surface Versus ◽  
Two Cities

scholarly journals The Impact of the Urban Heat Island during an Intense Heat Wave in Oklahoma City

2010 ◽  
Vol 2010 ◽  
pp. 1-10 ◽  
Author(s):  
Jeffrey B. Basara ◽  
Heather G. Basara ◽  
Bradley G. Illston ◽  
Kenneth C. Crawford
Keyword(s):  
Urban Heat Island ◽  
Heat Wave ◽  
Rural Areas ◽  
Oklahoma City ◽  
Apparent Temperature ◽  
Heat Island ◽  
Atmospheric Conditions ◽  
Urban Heat ◽  
The Impact ◽  
Intense Heat

During late July and early August 2008, an intense heat wave occurred in Oklahoma City. To quantify the impact of the urban heat island (UHI) in Oklahoma City on observed and apparent temperature conditions during the heat wave event, this study used observations from 46 locations in and around Oklahoma City. The methodology utilized composite values of atmospheric conditions for three primary categories defined by population and general land use: rural, suburban, and urban. The results of the analyses demonstrated that a consistent UHI existed during the study period whereby the composite temperature values within the urban core were approximately C warmer during the day than the rural areas and over C warmer at night. Further, when the warmer temperatures were combined with ambient humidity conditions, the composite values consistently revealed even warmer heat-related variables within the urban environment as compared with the rural zone.

scholarly journals Exploring the effects of urban heat island: A case study of two cities in Thailand and Indonesia

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Sigit D. Arifwidodo ◽  
Orana Chandrasiri ◽  
Rizqi Abdulharis ◽  
Tetsu Kubota
Keyword(s):  
Urban Heat Island ◽  
Heat Island ◽  
Two Cities ◽  
Urban Heat

scholarly journals Evaporation from water surfaces in urban environments, using Prague and Pilsen (Czech Republic) as examples

2016 ◽  
Vol 4 (4) ◽  
pp. 13-23
Author(s):  
Gražyna Knozová ◽  
Jáchym Brzezina ◽  
Jaroslav Rožnovský ◽  
Mojmír Kohut
Keyword(s):  
Thermal Conditions ◽  
Local Scale ◽  
Urban Environments ◽  
Heat Island ◽  
Two Cities ◽  
Water Surfaces ◽  
Urban Heat ◽  
The Subject ◽  
The Difference ◽  
Rate Of Evaporation

AbstractThe subject of this study is an evaluation of the amount of evaporation from water surfaces (VVH), measured using EWM devices in two cities of different sizes, and located approximately 80 km from each other – Prague and Pilsen. The results were analyzed in the context of urban phenomena, which are pronounced especially in Prague, and also in the context of meteorological and morphological conditions in those locations. It was found that higher amounts of evaporation were measured at the meteorological station in Pilsen. The difference between the average sum of VVH per season (1st May to 30th September) between 2005 and 2014 for the two locations is 33.3 mm. The difference between daily average values was 0.2 mm. Given the suburban nature of the two locations where measurements were taken, it was not possible to draw any conclusions about the effect of the urban heat island on the rate of evaporation and values of VVH. Factors significantly influencing VVH are surface roughness, which is higher in urban environments than in open landscapes. Based on the results it was concluded that at both a regional and a local scale, the rate of evaporation is more affected by wind speed than thermal conditions. The measured VVH values differ, not just because of the urban dimension of the two cities compared, but especially as a result of different topoclimatic location of the two stations.

scholarly journals Diurnal cycle of the Oklahoma City urban heat island

2008 ◽  
Vol 113 (D20) ◽  
Author(s):  
Jeffrey B. Basara ◽  
Peter K. Hall ◽  
Amanda J. Schroeder ◽  
Bradley G. Illston ◽  
Kodi L. Nemunaitis
Keyword(s):  
Urban Heat Island ◽  
Diurnal Cycle ◽  
Oklahoma City ◽  
Heat Island ◽  
Urban Heat

scholarly journals Numerical Simulation Analysis of the Impact of Urbanization on an Extreme Precipitation Event over Beijing–Tianjin–Hebei, China

Atmosphere ◽  
2020 ◽  
Vol 11 (9) ◽  
pp. 945
Author(s):  
Jing Zhang ◽  
Yu-shu Zhou ◽  
Xin-yong Shen
Keyword(s):  
Surface Water ◽  
Extreme Precipitation ◽  
Upward Movement ◽  
Heat Island ◽  
Island Effect ◽  
Two Cities ◽  
Urban Heat ◽  
Impact Of Urbanization ◽  
The Impact ◽  
Bth Region

In this study, an extreme rainstorm that occurred in the Beijing–Tianjin–Hebei (BTH) region in China on 19–20 July 2016 is simulated and analyzed using the Weather Research and Forecasting model, coupled with a multilayer urban canopy scheme, to reveal the impact of urbanization on the extreme precipitation process in the region. The results show that the urban heat island effect (that is, surface warming and an increased near-ground sensible heat flux, which leads to increased vertical motion and atmospheric instability layer strengthening) plays a dominant role in the urban modification of rainfall during the early stages of urbanization, resulting in an increase of 6–10 mm in average hourly precipitation in urban and downwind areas. With the further development of urbanization in the BTH region, particularly in the big cities of Beijing and Tianjin, the large-scale expansion of the urban surface reduces the surface moisture, the evaporation of surface water from the ground, and the height of the atmospheric boundary layer, leading to an urban dry island effect brought about by the lack of near-surface water vapor, which inhibits an increase in precipitation. The positive effect of the urban heat island on precipitation was offset by the urban dry island effect, so the increase in precipitation in the urban areas was not obvious, but an increased range of 8–10 mm was noted. The existence of large cities changes the position of the strong upward movement of air, and convective upward movement is more likely to occur between the suburbs. With the further expansion of the underlying surface of the adjacent cities of Beijing and Tianjin, the upward movement between the two cities coincides, leading to an obvious increase in precipitation between the two cities.

scholarly journals Degree-hours and Degree-days in Coastal Mediterranean Cities, Patras and Kalamata, Greece

2021 ◽  
Vol 2 (4) ◽  
pp. 1-1
Author(s):  
Panagiotis Kyriakopoulos ◽  
◽  
Athanassios Giannopoulos ◽  
Yannis G. Caouris ◽  
Manolis Souliotis ◽  
...  
Keyword(s):  
Air Temperature ◽  
Rural Areas ◽  
Historical Data ◽  
Ambient Air ◽  
Heat Island ◽  
Degree Days ◽  
Heating And Cooling ◽  
Island Effect ◽  
Two Cities ◽  
Urban Heat

The hourly ambient air temperature information was analyzed for two Greek coastal Mediterranean cities: Patras (for the entire 2018 year) with ten urban and one rural stations, and Kalamata (for the entire 2019 and 2020 years) with eight urban and two rural stations. The heating and cooling Degree Hours (DH) and Degree Days (DD) were calculated, for base temperatures of 18 °C and 26 °C, respectively. The urban heating degree hours for the cities of Patras and Kalamata were observed to be 19.2% and 24%, respectively, lower than that of the rural areas. Similarly, the urban cooling degree hours for the two cities were 9% and 22% higher than that of rural areas. These findings indicate a distinct urban heat island effect in both the cities, with greater effects in Kalamata than in Patras. Following comparisons with historical data from reliable sources, it could be observed that summers are trending warmer and winters are trending milder.

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