The spatial variability of air temperature and nocturnal urban
heat island intensity in the city of Brno, Czech Republic

J 2015

The spatial variability of air temperature and nocturnal urban heat island intensity in the city of Brno, Czech Republic

DOBROVOLNÝ, Petr and Lukáš KRAHULA

Basic information

Original name

The spatial variability of air temperature and nocturnal urban heat island intensity in the city of Brno, Czech Republic

Authors

DOBROVOLNÝ, Petr (203 Czech Republic, guarantor, belonging to the institution) and Lukáš KRAHULA (203 Czech Republic, belonging to the institution)

Edition

Moravian Geographical Reports, AV ČR, Institute of Geonics, Czech Academy of Sciences, 2015, 1210-8812

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 1.093

RIV identification code

RIV/00216224:14310/15:00081151

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1515/mgr-2015-0013

UT WoS

000362230000002

Keywords in English

urban heat island; mobile measurements; air temperature; Brno; Czech Republic

Abstract

V originále

This study seeks to quantify the effects of a number of factors on the nocturnal air temperature field in a medium-sized central European city located in complex terrain. The main data sources consist of mobile air temperature measurements and a geographical database. Temperature measurements were taken along several profiles through the city centre and were made under a clear sky with no advection. Altogether nine sets of detailed measurements, in all seasons, were assembled. Altitude, quantity of vegetation, density of buildings and the structure of the transportation (road) system were considered as explanatory variables. The result is that the normalized difference vegetation index (NDVI) and the density of buildings were the most important factors, each of them explaining a substantial part (more than 50%) of overall air temperature variability. Mobile measurements with NDVI values as a covariate were used for interpolation of air temperature for the entire study area. The spatial variability of nocturnal air temperature and UHI intensity in Brno is the main output presented. Air temperatures interpolated from mobile measurements and NDVI values indicate that the mean urban heat island (UHI) intensity in the early night in summer is at its highest (approximately 5 degrees C) in the city centre and decreases towards the suburban areas.

Links

GA205/09/1297, research and development project

Name: Víceúrovňová analýza městského a příměstského klimatu na příkladu středně velkých měst

Investor: Czech Science Foundation, Multilevel analysis of the urban and suburban climate taking medium-sized towns as an example

Citovat

DOBROVOLNÝ, Petr and Lukáš KRAHULA. The spatial variability of air temperature and nocturnal urban heat island intensity in the city of Brno, Czech Republic. Moravian Geographical Reports. AV ČR, Institute of Geonics, Czech Academy of Sciences, 2015, vol. 23, No 3, p. 8-16. ISSN 1210-8812. Available from: https://dx.doi.org/10.1515/mgr-2015-0013.

@article{1315204,
   author = {Dobrovolný, Petr and Krahula, Lukáš},
   article_number = {3},
   doi = {http://dx.doi.org/10.1515/mgr-2015-0013},
   keywords = {urban heat island; mobile measurements; air temperature; Brno; Czech Republic},
   language = {eng},
   issn = {1210-8812},
   journal = {Moravian Geographical Reports},
   title = {The spatial variability of air temperature and nocturnal urban heat island intensity in the city of Brno, Czech Republic},
   volume = {23},
   year = {2015}
}

TY  - JOUR
ID  - 1315204
AU  - Dobrovolný, Petr - Krahula, Lukáš
PY  - 2015
TI  - The spatial variability of air temperature and nocturnal urban heat island intensity in the city of Brno, Czech Republic
JF  - Moravian Geographical Reports
VL  - 23
IS  - 3
SP  - 8-16
EP  - 8-16
PB  - AV ČR, Institute of Geonics, Czech Academy of Sciences
SN  - 12108812
KW  - urban heat island
KW  - mobile measurements
KW  - air temperature
KW  - Brno
KW  - Czech Republic
N2  - This study seeks to quantify the effects of a number of factors on the nocturnal air temperature field in a medium-sized central European city located in complex terrain. The main data sources consist of mobile air temperature measurements and a geographical database. Temperature measurements were taken along several profiles through the city centre and were made under a clear sky with no advection. Altogether nine sets of detailed measurements, in all seasons, were assembled. Altitude, quantity of vegetation, density of buildings and the structure of the transportation (road) system were considered as explanatory variables. The result is that the normalized difference vegetation index (NDVI) and the density of buildings were the most important factors, each of them explaining a substantial part (more than 50%) of overall air temperature variability. Mobile measurements with NDVI values as a covariate were used for interpolation of air temperature for the entire study area. The spatial variability of nocturnal air temperature and UHI intensity in Brno is the main output presented. Air temperatures interpolated from mobile measurements and NDVI values indicate that the mean urban heat island (UHI) intensity in the early night in summer is at its highest (approximately 5 degrees C) in the city centre and decreases towards the suburban areas.
ER  -

DOBROVOLNÝ, Petr and Lukáš KRAHULA. The spatial variability of air temperature and nocturnal urban heat island intensity in the city of Brno, Czech Republic. \textit{Moravian Geographical Reports}. AV ČR, Institute of Geonics, Czech Academy of Sciences, 2015, vol.~23, No~3, p.~8-16. ISSN~1210-8812. Available from: https://dx.doi.org/10.1515/mgr-2015-0013.

Detailed Information on Publication Record