Heat mitigation strategies in winter and summer: Field measurements in temperate climates

Mohammad Taleghani, Martin Tenpierik, Andy van den Dobbelsteen, David Sailor

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Natural elements such as vegetation and water bodies may help reduce heat in urban spaces in summer or in hot climates. This effect, however, has rarely been studied during cold seasons. This paper briefly studies the effect of vegetation and water in summer and more comprehensively in winter. Both studies are done in courtyards on two university campuses in temperate climates. A scale model experiment with similar materials supports the previous studies. The summer study is done in Portland (OR), USA, and the winter study (along with the scale model) in Delft, the Netherlands. The summer study shows that a green courtyard at most has a 4.7°C lower air temperature in the afternoon in comparison with a bare one. The winter study indicates that the air temperature above a green roof is higher than above a white gravel roof. It also shows that, although a 'black' courtyard has higher air temperatures for a few hours on sunny winter days, a courtyard with a water pond and with high amounts of thermal mass on the ground has a warmer and more constant air temperature in general. Both the summer and winter studies show that parks in cities have a lower and more constant air temperature compared to suburbs, both in summer and winter. The scale model also demonstrates that although grass has a lower albedo than the used gravel, it can provide a cooler environment in comparison with gravels and black roof.1.

Original languageEnglish (US)
Pages (from-to)309-319
Number of pages11
JournalBuilding and Environment
Volume81
DOIs
StatePublished - 2014
Externally publishedYes

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heat
mitigation
air
climate
air temperature
Gravel
winter
summer
Air
gravel
water
Roofs
Temperature
roof
Water
Ponds
pilot project
suburb
vegetation
Netherlands

Keywords

  • Courtyard
  • Park cool effect
  • Summer and winter
  • Temperate climates
  • Urban heat island effect
  • Vegetation and water body

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Environmental Engineering
  • Geography, Planning and Development
  • Building and Construction

Cite this

Heat mitigation strategies in winter and summer : Field measurements in temperate climates. / Taleghani, Mohammad; Tenpierik, Martin; van den Dobbelsteen, Andy; Sailor, David.

In: Building and Environment, Vol. 81, 2014, p. 309-319.

Research output: Contribution to journalArticle

Taleghani, Mohammad ; Tenpierik, Martin ; van den Dobbelsteen, Andy ; Sailor, David. / Heat mitigation strategies in winter and summer : Field measurements in temperate climates. In: Building and Environment. 2014 ; Vol. 81. pp. 309-319.
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