Detection of atmospheric urban heat island through direct measurements in Cluj-Napoca city, Romania
| Autor: | Adina-Eliza Croitoru, Ioana Herbel, Ionuț Rus, Antoniu Flavius Ciupertea, Gabriela Victoria Harpa |
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| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Meteorology Geography Planning and Development lcsh:G1-922 02 engineering and technology 01 natural sciences Mountain breeze and valley breeze Urbanization atmospheric urban heat island Spring (hydrology) 0202 electrical engineering electronic engineering information engineering Urban heat island Transect 0105 earth and related environmental sciences geography geography.geographical_feature_category Romania 020206 networking & telecommunications Period (geology) General Earth and Planetary Sciences Environmental science Physical geography Rural area direct measurements lcsh:Geography (General) Intensity (heat transfer) Cluj-napoca |
| Zdroj: | Hungarian Geographical Bulletin, Vol 65, Iss 2, Pp 117-128 (2016) |
| ISSN: | 2064-5147 2064-5031 |
| DOI: | 10.15201/hungeobull.65.2.3 |
| Popis: | In the last decades, cities worldwide have experienced accelerated development, so that continuous urbanization and its impact is presently one of the most important topics in different fields of research. The main aim of this study is to identify the intensity of the atmospheric urban heat island in Cluj-Napoca city, through direct observations campaigns by using fixed points and transect measurements. The data has been collected over a period of 6 months (May-October 2015). The measurements have been performed mainly in anti-cyclonic weather condition, during the night, between 23:00 and 03:00. The profiles trajectories followed the main roads of the city on directions North-South, East-West, and Northwest-Southeast. 8 fixed points have been chosen in order to highlight best the temperature patterns in different Local Climate Zones (LCZs). The main findings of the study are the followings: the direct observations performed in three seasons (spring, summer and autumn) revealed the existence of an atmospheric urban heat island in Cluj-Napoca city; the warmest areas are compact high-rise and compact midrise, located in the eastern half of the city, where the temperature increases by more than 2.0 °C, as average value for all campaigns, but the maximum values, recorded in the summer are higher than 3.0 °C; the coolest areas are sparsely built areas and the large low-rise/water areas, where the temperature is quite similar to that recorded in the nearby rural areas (diff erence of 0.0-0.1 °C, as average values); local factors, such as mountain breeze and topography have a great impact on the atmospheric urban heat island configuration. |
| Databáze: | OpenAIRE |
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