URBAN CLIMATE RESEARCH GROUP
FROM NOVI SAD (SERBIA)
AND
URBAN HEAT ISLAND ISSUES
Erasmus+ lecture at the Department of Geography,
Masaryk University (Brno, Czech Republic)
March, 27-31, 2017
dr Stevan Savić, associate professor
Climatology and Hydrology Researcher Centre,
Faculty of Sciences, University of Novi Sad, Serbia
stevan.savic@dgt.uns.ac.rs
internet portal: clihyd.com
Brno, Czech Republic, 2017
UNIVERSITY OF NOVI SAD (VOJVODINA, SERBIA)
Internet portal: http://www.uns.ac.rs/sr/
FACULTY OF SCIENCES
Faculty of Sciences is an educational and scientific institution
providing teaching and scientific research within the fields of
biology, chemistry, physics, mathematics, informatics, geography,
tourism and environmental protection at five departments.
The Faculty was established in 1969, but research in natural and
mathematical sciences began long before that.
Department of Biology and Ecology
Department of Physics
Department of Geography, Tourism and Hotel Management
Department of Chemistry, Biochemistry and Environmental Protection
Department of Mathematics and Informatics
www.clihyd.com
SPATIAL PATTERN OF UHI
Urban temperature modification presented by urban heat island (UHI):
-area of higher urban temperatures compared to those in surrounding (nonurbanized)
areas
UHI intensity = ΔTu-r
SPATIAL PATTERN OF UHI
Acceleration of urbanization:
- 17-18th centuries − large development of European settlements − onset of
industrial revolution
- first part of 20th century − striking American development
- last decades − development of different agglomerations worldwide
Angglomeration
of Ruhr-area
SPATIAL PATTERN OF UHI
- Luk Hauard, chemist and meteorologist – 1820 firstly noticed the differences in air
temperature
- 1958, start to use UHI term
World and urban population
growth between 1950 and 2020
LAYERS IN THE URBAN ATMOSPHERE
UCL – Urban canopy layer:
-air among the buildings
- its height - average building height
- its pecularities - governed by micro-scale processes
UBL – Urban boundary layer:
-its basic - near the roof level
- its pecularities - governed by the general urban surface
- its height - depended on the roughness conditions significantly
SPATIAL PATTERN OF UHI
Characteristics of urban areas:
- huge population concentration in the small area
- air pollution: water vapour, gases, smoke and other solid pollutants released by
heating, traffic and industrial processes
- anthrophogenic heat production: heat produced by human activities (industry,
traffic, heating) and realesed into the environment
- urban roughness (thermal modifications and reduced sky view factor)
SPATIAL PATTERN OF UHI
UHI intensity
Spatial pattern of UHI along a cross-section (AB) and its horizontal structure
SPATIAL PATTERN OF UHI
Nocturnal surface temperature pattern (Szeged, 14.08.2008)
Nocturnal UHI intensity distribution
(Szeged, 25.03.2003)
Annual
Ideal days
2014.08.29-30.
UHI
Cooling rates
1 hour before sunset – 13 hours after sunset
Annual UHI Annual UHI (ideal days)
SPATIAL AND TEMPORAL PATTERN OF UHI
2014.08.29-30.
-2
+2
0
+6
+14+10
URBAN CLIMATE AND HUMAN MORTALITY
URBAN CLIMATE AND HUMAN MORTALITY
Belgrade, 1888-2008
CDR
full line
TsrW
dotted line
CDR
full line
TsrSm
dotted line
URBAN CLIMATE AND HUMAN MORTALITY
Coefficient of seasonal variation in
mortality (CSVM), 1953/54-2008/09
Hovi Sad, Serbia
1953/54
1957/58
1961/62
1965/66
1969/70
1973/74
1977/78
1981/82
1985/86
1989/90
1993/94
1997/98
2001/02
2005/06
Year
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.6
CSVM
Period CSVM
1953/54-1963/64 0.25
1964/65-1974/75 0.19
1975/76-1985/86 0.11
1986/87-1996/97 0.12
1997/08-2008/09 0.07
URBAN CLIMATE AND HUMAN MORTALITY
The summer seasons ratio of cold degree days (CDD) for the perod 2007-
2012
URBAN CLIMATE AND ENERGY CONSUMPTION
Hourly curves of
a)energy consumption
duing workdays and
weekends and
b) air temperature for
summer season in the
perod 2007-2012
Correlation of electrical energy consumption and air temperature values
for each hour during workdays in the summer period (24 hours,
nighttime, daytime) in the perod 2007-2012
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