Study of urban heat islands through first-order models.

Case study - Galati and Braila counties area

  • Gabriel Murariu Faculty of Sciences and Environment, Dunărea de Jos University of Galati, 111 Domneasca Street, 800201 Galati, Romania, Dunărea de Jos University REXDAN research infrastructure, Galati-800385, Romania
  • Romana Drasovean Faculty of Sciences and Environment, Dunărea de Jos University of Galati, 111 Domneasca Street, 800201 Galati, Romania
  • Simona Condurache-Bota 1Faculty of Sciences and Environment, Dunărea de Jos University of Galati, 111 Domneasca Street, 800201 Galati, Romania
  • Sorin Frasina 1Faculty of Sciences and Environment, Dunărea de Jos University of Galati, 111 Domneasca Street, 800201 Galati, Romania, Center of Excellence Polymer Processing
  • Nicolae Tigau 1Faculty of Sciences and Environment, Dunărea de Jos University of Galati, 111 Domneasca Street, 800201 Galati, Romania
  • Romică CREȚU Faculty of Sciences and Environment, Dunărea de Jos University of Galati, 111 Domneasca Street, 800201 Galati, Romania
Keywords: Heat islands, UHII index, statistical analysis, GIS

Abstract

The urban heat island is the phenomenon by which cities become suggestively heater due to the absorption and holding of heat by built issues. The study of urban heat islands is a present subject in Romania as well. In this paper, we present a procedure for noticing climate change using extreme values of air temperature by using first order model. The modeling urban heat islands (UHI) was achieved by using ArcGIS tools. In the case of this paper, we conducted a data collection covering the period 2017 -2024, regarding the temperature in 8 monitoring stations of National Air Quality Network (.calitateaer.ro): Gl-2, GL-3, GL-4, BR-2, BR-3, BR-4, GL-5 and BR-5. The used algorithm includes: multivariate analysis - based on the ANOVA method, clustering - to group the stations according to thermal behavior. Using spatial interpolation procedures based on methods such as IDW or Kriging to create thermal maps, we managed to obtain a zonal classification.

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Published
2026-01-12
How to Cite
Murariu, G., Drasovean, R., Condurache-Bota, S., Frasina, S., Tigau, N. and CREȚU, R. (2026) “Study of urban heat islands through first-order models.”, Analele Universității ”Dunărea de Jos” din Galați. Fascicula II, Matematică, fizică, mecanică teoretică / Annals of the ”Dunarea de Jos” University of Galati. Fascicle II, Mathematics, Physics, Theoretical Mechanics, 48(2), pp. 71-75. Available at: https://gup.ugal.ro/ugaljournals/index.php/math/article/view/9568 (Accessed: 13January2026).
Issue
Vol 48 No 2 (2025)
Section
Articles