نتایج جستجو برای: نمایه uhi

تعداد نتایج: 6389  

2015
Philippe Martin Yves Baudouin Philippe Gachon

An urban heat island (UHI) is a relative measure defined as a metropolitan area that is warmer than the surrounding suburban or rural areas. The UHI nomenclature includes a surface urban heat island (SUHI) definition that describes the land surface temperature (LST) differences between urban and suburban areas. The complexity involved in selecting an urban core and external thermal reference fo...

Journal: :PeerJ PrePrints 2016
Jérémy Bernard Marjorie Musy Isabelle Calmet Erwan Bocher Pascal Keravec

Urban Heat Island (UHI) is defined as the air temperature difference between the city and its surrounding areas. This phenomenon varies spatially (depending on the type of urban fabric constituting each neighborhood) and temporally (depending on the time of the day, on the season and on the weather conditions). This contribution proposes a methodology to model the UHI spatially and temporally u...

2010
Sylvia Knight Claire Smith Michael Roberts

An urban heat island (UHI) is a phenomenon whereby urban areas experience elevated temperatures relative to the surrounding rural hinterland. This thermal contrast is brought about by anthropogenic modification of the environment. For example, there is little bare earth and vegetation in urban areas. This means that less energy is used in evaporating water, less of the Sun’s energy is reflected...

Journal: :Atmospheric Research 2021

Heat waves are unusually high temperature events over consecutive days and may cause adverse impacts such as morbidity mortality. The interaction between heat urban island (UHI) effects has remained a subject of debate, some studies prove wave-UHI synergy while others do not. Furthermore, affect tropical cities more severely than mid-latitude cities, but there is disproportionate lack wave focu...

Investigation of the effects of Covid-19 pandemic on UHI in residential, industrial and green spaces of Tehran  Abstract Rapid urbanization in recent decades has been a major driver of ecosystems and environmental degradation, including changes in agricultural land use and forests. Urbanization is rapidly transforming ecosystems into buildings that increase heat storage capacity. Loss of ve...

صیادی, فریبا, طولابی نژاد, میثم, علیجانی, بهلول,

Urban climate is strongly influenced by the processes of urban work and life. Expansion of cities and consequently increased human constructions causes to changes in urban climate. The rising temperature of cities rather than the surroundings is one of the effects linked to direct human intervention. Building heating, air pollution and the use of inappropriate materials in the flooring streets...

The term urban heat island (UHI), described the phenomenon of climate change in urban areas compared with surrounding rural areas. UHI effects include: increasing in energy and water consumption, air pollution expansion and interfering in thermal comfort. Surface urban heat island (SUHI) contains patterns of land surface temperature (LST) in urban areas that has interaction with UHI in urban ca...

Journal: :CivilEng 2021

Economic and social development of urban rural areas continues in parallel with the increase human population, especially developing countries, which leads to sustained expansion impervious surface areas, particularly paved surfaces. The conversion pervious surfaces significantly modifies local energy balance contributes heat island (UHI) formation, mainly densely developed cities. This paper r...

Journal: :Remote Sensing 2015
Qunshan Zhao Soe Win Myint Elizabeth A. Wentz Chao Fan

The urban heat island (UHI) phenomenon is a significant worldwide problem caused by rapid population growth and associated urbanization. The UHI effect exacerbates heat waves during the summer, increases energy and water consumption, and causes the high risk of heat-related morbidity and mortality. UHI mitigation efforts have increasingly relied on wisely designing the urban residential environ...

2009
James Reilly

Fine Gael’s “FairCare” proposals, by contrast, represent the most fundamental reform of the health system since the formation of the State. We will abolish long-term waits on trolleys in A&E, slash waiting lists in hospitals, and eliminate the unfair and inefficient public/private divide by introducing Universal Health Insurance (UHI). We will also reform the Primary Care system to ensure that ...

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