Urban heat island patterns and their dynamics based on an urban climate measurement network

Tamás Gál, Nóra Skarbit, J. Unger

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

In this paper the spatial pattern of Urban Heat Island (UHI) and its dynamical background are analysed. Furthermore, we examined the annual, seasonal and diurnal characteristics of UHI according to the Local Climate Zones (LCZs). The analysis was performed using one year (between June 2014 and May 2015) dataset from the measurement network of Szeged (Hungary). This network consists of 24 stations measuring air temperature and relative humidity. In the installation of the network the representativeness played an important role in order to that the stations represents their LCZs. We examined the thermal reactions during average and ideal conditions using the so-called weather factor. Our results show that the UHI is stronger in the compactly built zones and there are great differences between the zones. The greatest values appear in summer, while the difference is small in winter. The UHI starts to develop at sunset and exists through approximately 9–10 hours and differences are about 2 °C larger in case of ideal days, when the conditions (wind, cloud cover) are appropriate to the strong development of the UHI. The cooling rates show that the first few hours after sunset are determinative for the developing of UHI. In addition, the effect of UHI on annual mean temperature is also significant.

Original languageEnglish
Pages (from-to)105-116
Number of pages12
JournalHungarian Geographical Bulletin
Volume65
Issue number2
DOIs
Publication statusPublished - 2016

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urban climate
heat island
heat
climate
cloud cover
Hungary
relative humidity
air temperature
air
cooling
weather
winter
summer

Keywords

  • Cooling rate
  • Local climate zones
  • Measurement network
  • Szeged
  • Urban heat island

ASJC Scopus subject areas

  • Earth and Planetary Sciences(all)
  • Geography, Planning and Development

Cite this

Urban heat island patterns and their dynamics based on an urban climate measurement network. / Gál, Tamás; Skarbit, Nóra; Unger, J.

In: Hungarian Geographical Bulletin, Vol. 65, No. 2, 2016, p. 105-116.

Research output: Contribution to journalArticle

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