Urban heat island pdf file

The temperature difference between the city and surrounding areas is also a function of winds. Urban heat island uhi is a phenomenon that occurs in cities worldwide. Final report on urban planning characteristics to mitigate climate change in context of urban heat island effect v list of tables table 31 characteristics of surface and atmospheric urban heat islands 3 14. Urban planning characteristics to mitigate climate change.

Trend analysis of urban heat island intensity according to. Asian cities climate resilience the impact of urban heat islands. Alterations of surface area, improper urban planning, air pollution, etc. This compendium was developed by the climate protection partnership division in the u. The air temperature at the city center is higher than that of the surrounding non urban areas so that it looks like an island and this phenomenon is so.

Mitigation of the urban heat island effect can be accomplished through the use of green roofs and the use of lightercolored surfaces in urban areas. Urban heat island intensity uh ii which is measured by the difference between the highest sustained ur ban air tem perature and the background rural tem perature 32. Counteracting urban heat island effects in a global climate. Even the case of tampa is not entirely incompatible with that view because there in winter are 12 percent more sunshine hours than in summer. Compendium of strategies describes the causes and impacts of summertime urban heat islands and promotes strategies for lowering temperatures in u. The urban heat island may also increase cloudiness and precipitation in the city. The urban heat island effects can also be reduced by weather phenomona. Buildings, roads, and other infrastructure replace open land and vegetation. It deals with increased urban temperatures compared. Heat island is one of the more documented phenomena of climate change. Assessment of international urban heat island research pdf. The urban heat island effect and the role of vegetation to. Therefore, there is an increasing need for studies on the.

Proceedings of the 2010 northeastern recreation research symposium gtrnrsp94. The properties of urban roofs and pavements, as well as human activity, contribute to the formation of summer noglossary urban heat islands no. Strong winds reduce the temperature contrast by mixing together the city and rural air. Urbanization has increased concerns about the uhi, particularly in terms of human health and a healthy environment. When talking about urban heat islands uhi basically 3 boundaries of measurement need to also understand areas in which the temperature is being measured. A comparison of the temperature in the city of baltimore with. Pavementwatering in cities for urban heat island mitigation and.

The summer urban heat island uhi effect is a daytime elevation in the outdoor urban air temperature that results in part from the replacement of trees and other vegetation with buildings, roads and other heat absorbing infrastructure causes. Pdf urban heat island towards urban climate researchgate. Planning urban heat island mitigation in boston executive summary erin coutts, kate ito, cecilia nardi, trang vuong to advance important resilience objectives, in 2015 the trust for public land, the city of boston, and a variety of. In general when referencing uhi, the areas of interest are the surface heat island and canopy layer heat island. Parks and the urban heat island northern research station. Francesco musco, laura fregolent, davide ferro, filippo magni, denis maragno, davide martinucci et al. Urban heat island uhi has become one of the worlds leading urban environmental issues.