Stevan Savic - Academia.edu (original) (raw)
Papers by Stevan Savic
Urban Forestry & Urban Greening
Glasnik Srpskog geografskog drustva
In this study, the Local Climate Zones (LCZs) in Novi Sad, the second largest city in Serbia, are... more In this study, the Local Climate Zones (LCZs) in Novi Sad, the second largest city in Serbia, are analysed as to surface temperature differences. The LCZs were delineated on the basis of the GIS-based method created by Geletic & Lehnert (2016). Land Surface Temperatures (LSTs) were derived from the satellites Terra, sensor ASTER, and LANDSAT-8. The thermal images were provided at a similar time (at about 9.30 AM) between 2002 and 2008 (ASTER) and between 2013 and 2017 (LANDSAT-8). Statistical analyses, including the analysis of variance (ANOVA) and Tukey-HSD test, were employed to reveal LST differences between the LCZs. The results indicate that in 84% of cases there were significant differences in LST between pairs of LCZs. Temperature differences between LCZs were the most pronounced in the summer season. In general, 8 (large low-rise), 10 (heavy industry), 2 (compact midrise) and 3 (compact low-rise) LCZs had the highest surface temperatures in Novi Sad. Contrary to this, LCZs A...
ISPRS International Journal of Geo-Information
In the light of climate change and burgeoning urbanization, heat loads in urban areas have emerge... more In the light of climate change and burgeoning urbanization, heat loads in urban areas have emerged as serious issues, affecting the well-being of the population and the environment. In response to a pressing need for more standardised and communicable research into urban climate, the concept of local climate zones (LCZs) has been created. This concept aims to define the morphological types of (urban) surface with respect to the formation of local climatic conditions, largely thermal. This systematic review paper analyses studies that have applied the concept of LCZs to European urban areas. The methodology utilized pre-determined keywords and five steps of literature selection. A total of 91 studies were found eligible for analysis. The results show that the concept of LCZs has been increasingly employed and become well established in European urban climate research. Dozens of measurements, satellite observations, and modelling outcomes have demonstrated the characteristic thermal r...
Sustainability
The Urban Heat Islands (UHI) effect is a microclimatic phenomenon that especially affects urban a... more The Urban Heat Islands (UHI) effect is a microclimatic phenomenon that especially affects urban areas. It is associated with significant temperature increases in the local microclimate, and may amplify heat waves. Due to their intensity, UHI causes not only thermal discomfort, but also reductions in the levels of life quality. This paper reviews the important role of green infrastructure as a means through which the intensity of UHI may be reduced, along with their negative impact on human comfort and wellbeing. Apart from a comprehensive review of the available literature, the paper reports on an analysis of case studies in a set of 14 cities in 13 countries representing various geographical regions and climate zones. The results obtained suggest that whereas UHI is a common phenomenon, green infrastructure in urban areas may under some conditions ameliorate their impacts. In addition, the study revealed that the scope and impacts of UHI are not uniform: depending on peculiarities ...
Geographica Pannonica
A direct outcome of the global climate change is the modification of seasonal precipitation patte... more A direct outcome of the global climate change is the modification of seasonal precipitation patterns, apparent on a monthly temporal scale. In Central Europe, it includes more frequent high-intensity rainfalls, occurring mostly during spring and summer. These heavy rainfalls induce pluvial floods in urban areas due to a high percentage of impervious surfaces and limited drainage systems. This hazard affects Central European cities and impacts many receptors, including lives, infrastructures, private properties or the functioning of cities. This study focuses on the monitoring of precipitation events with the aim of revealing precipitation patterns across two different types of land cover: urban and suburban/rural areas of Novi Sad (Serbia). Measurements from seven rain gauge stations were used as input data, covering the 2015-2018 period. The precipitation data were analysed using 12 precipitation indices, nine of which were defined by the Expert Team on Climate Change Detection and Indices (ETCCDI), while three additional were designed specifically for this study. Based on their locations, the stations were classified into the 'urbanized' and 'non-urbanised' group. The concept of the Local Climate Zone (LCZ) was used to classify urbanised areas LCZ1-8, non-urbanised areas LCZ9 and the land cover zones (LCZ A-G). A statistical analysis based on the ANOVA F-test was conducted, defining the significance threshold at 90% for α = 0.01 and at 95% for α = 0.05. The obtained results revealed one relation for the CDD index at 95% and two relations at 90% for CDD and Rp95 indices, showing a relation between heavy rainfall and the type of land cover. Statistical results underline the need for a denser station network and longer monitoring periods in order to proceed to stronger statistical tests and make it possible to establish other relations with the climate indices.
Geographica Pannonica
Pluvial flooding is a result of overland flow and ponding before the runoff enters any watercours... more Pluvial flooding is a result of overland flow and ponding before the runoff enters any watercourse, drainage system or sewer, or cannot enter it because the network is full to capacity, usually caused by intense rainfall. River and coastal floods get the most attention since they are largest and last the longest, while pluvial floods are relatively marginalized in research. Therefore, the main goal of this research was to show risk posed by pluvial floods, their connection to current global climate change processes, present effects of flooding in European cities, as well as what we can expect in the future. Furthermore, the aims were to present and get more familiar with scientific projects, strategies, directives and measures devised both on national and international levels, that deal with urban pluvial flood issues across the European continent. Climate change projections indicate that there will be an increase in the frequency and intensity of rainfall events throughout Europe and along with ongoing urbanization, the problem of pluvial flooding will most certainly require more attention, which it is starting to receive. Some countries have already developed their strategies and initiatives and implemented both structural and non-structural measures, such as spatial planning, constructional measures, information systems, reducing land sealing through policies, building codes and standards, on-site improvement of retention, infiltration, evaporation, and rainfall water recycling with the use of green roofs, permeable or porous pavements, rain gardening or urban rainwater harvesting. At the same time, there are numerous research papers, studies, conferences and workshops devoted to the problem of pluvial flooding and its management carried out in an attempt to properly deal with this hazard.
Geographica Pannonica
The aim of this paper was to assess the impact of heatwaves on mortality in ten Czech cities, usi... more The aim of this paper was to assess the impact of heatwaves on mortality in ten Czech cities, using data recorded during the summers of 2015 and 2016. Temperature-related mortality during heatwaves was investigated by comparing mortality figures on heatwave days and those on other days by means of the Mann-Whitney U test. Results for all-cause mortality, cardiovascular and respiratory diseases (CVD+R) mortality, as well as for mortality in the over-65 age group, show statistically significant differences (p <0.05) during heatwaves compared with other days in seven of ten cities investigated. The effect of heatwaves on mortality did not reach statistical significance in Olomouc, Plzeň and Liberec. The results suggest that further studies addressing spatial patterns of mortality during heatwaves in urban areas are required to assess the vulnerability of the urban populations in particular cities and types of neighbourhood.
Dela
Analizirali smo letne in sezonske količine ter trende za 12 meteoroloških postaj v panonskem in o... more Analizirali smo letne in sezonske količine ter trende za 12 meteoroloških postaj v panonskem in obpanonskem delu Srbije za obdobje 1949–2010. Rezultati kažejo trend zmanjševanja padavin pozimi in spomladi ter trend porasta poleti in jeseni. Časovne serije letnih količin padavin kažejo porast padavin na večini preučevanih postaj in so posledica bolj namočenih let ter ekstremnih padavinskih dogodkov v zadnjih 15 letih. V preučevanem obdobju je bilo tudi 10 let z močno in ekstremno sušo s tendenco pojavljanja v več zaporednih letih. Dobro sliko o razporeditvi padavin je dala tudi metoda razvrščanja v skupine (cluster analiza).
The Science of the total environment, Jan 16, 2017
This study uses the MUKLIMO_3 urban climate model (in German, Mikroskaliges Urbanes KLImaMOdell i... more This study uses the MUKLIMO_3 urban climate model (in German, Mikroskaliges Urbanes KLImaMOdell in 3-Dimensionen) and measurements from an urban climate network in order to simulate, validate and analyse the spatiotemporal pattern of human thermal comfort outdoors in the city of Brno (Czech Republic) during a heat-wave period. HUMIDEX, a heat index designed to quantify human heat exposure, was employed to assess thermal comfort, employing air temperature and relative humidity data. The city was divided into local climate zones (LCZs) in order to access differences in intra-urban thermal comfort. Validation of the model results, based on the measurement dates within the urban monitoring network, confirmed that the MUKLIMO_3 micro-scale model had the capacity to simulate the main spatiotemporal patterns of thermal comfort in an urban area and its vicinity. The results suggested that statistically significant differences in outdoor thermal comfort exist in the majority of cases between...
Geographica Pannonica
Materials and methods According to Oke (1984) and Svensson et al. (2002) three types of models ca... more Materials and methods According to Oke (1984) and Svensson et al. (2002) three types of models can be applied for climate related research in urban environments: numerical, physical and empirically based models. For input model, authors were used model of annual mean UHI intensity created by Unger et al. (2011a; 2011b), that is based on empirical modeling study of Balázs et al. (2009). Statistical calculations were done
Geographica Pannonica
In the second part of the 20th century, urbanization accelerated and reached enormous magnitude, ... more In the second part of the 20th century, urbanization accelerated and reached enormous magnitude, which results more and more people live in urbanized regions. Nowadays, about half of the human population is affected by the burdens of urban environments and furthermore the modified parameters of the urban atmosphere compared to the natural environment.
Geographica Pannonica
This work analyses temperature characteristics in order to identify temperature trends in Novi Sa... more This work analyses temperature characteristics in order to identify temperature trends in Novi Sad area for the period between the years 1951-1990. The data used were obtained in meteorological stations in Rimski Šančevi and in Petrovaradin. This study presents annual mean temperatures, average values at 7, 14 and 21h, average mean maximum and minimum values and average values per different seasons, respectively. Different statistical methods (arithmetic mean, standard deviation and correlation coefficient) and formulae of vertical gradient of air temperature and thermal coefficient were applied when analyzing temperature values. On the basis of analyzed and given results, it can be concluded that Novi Sad area experiences the trend of air temperature rise. A significant temperature rise is recorded during winter and spring period, while similar trend of rise is noticed when minimum average temperatures are observed. On the other hand, average maximum values show a rather slower trend of rise or even the fall in temperature, while a significant trend of air temperature fall is recorded during summer and spring periods.
Geographica Pannonica
Detected break points were compared to metadata records in order to diagnose causes of featured i... more Detected break points were compared to metadata records in order to diagnose causes of featured inhomogeneities. That type of information was crucial for applying calculated corrections of investigated series. After the homogenisation process, the adjustment values have been analysed. The breaks which are explained in metadata are related to the relocations of the stations and show mostly low correction values. Differences between average values of raw and homogenised monthly time series are mostly within range from 0 to 0.12°C. According to low difference data, the results present very similar linear trends of original and homogenised time series for all stations. Still, there are a substantial changes of spatial distribution paterns. The patterns for homogenised series seem more regular, due to successful application of homogenisation process, making the image of climate variations in Vojvodina more reliable.
Geographica Pannonica
In this paper the near surface and tropospheric temperature trends are compared on the territory ... more In this paper the near surface and tropospheric temperature trends are compared on the territory of Vojvodina were investigated, on the basis of four sets of data from ground-based and satellite observation, for the period 1979-2005. The trend analysis has shown that there is no amplification of trend of air temperature increase with altitude. On the basis of our calculations, we obtained the results that the air temperature increase in Vojvodina, approximately 1.5 times higher in the near-surface layer, compared to lower and middle layers of troposphere. This shows flat or decreasing amplification with altitude, in contrary to some models.
Geologica Carpathica
Four loess units and three paleopedological layers are preserved in the ∼8 in thick Petrovaradin ... more Four loess units and three paleopedological layers are preserved in the ∼8 in thick Petrovaradin exposure, Vojvodina, Serbia. Amino acid geochronology provides stratigraphic correlations between loess units L1 and L2 at Petrovaradin with loess of glacial cycles B and C, respectively, at other Central European localities. Magnetic susceptibility and sedimentological evidence of the Petrovaradin loess-paleosol sequence are used for correlation with the SPECMAP paleoclimatic record. Late Pleistocene climate dynamics recorded in the Petrovaradin brickyard loess-paleosol sequence present temperate humid and warm interglacial and temperate cold glacial climatic conditions. The last glacial paleoclimatic record provides two main cold and dry stadial periods corresponding to deposition of two loess layers L1L1 and L1L2, as well as one moderate cold and relatively dry interstadial. Many episodes of alternating cold-dry and warm-wet paleoclimatic conditions suggest a possible correlation with...
The project is co-financed by the European Union 2 .3. Sitting and configuration of a representat... more The project is co-financed by the European Union 2 .3. Sitting and configuration of a representative urban climate (human comfort
The recently developed Local Climate Zones (LCZ) classification system as a climate-based system ... more The recently developed Local Climate Zones (LCZ) classification system as a climate-based system describes the physical conditions of the local-scale urbanized and non-urbanized environments universally and relative easily. The LCZ system was not originally designed for mapping, but to classify and standardize urban heat island observation sites, whether urban or rural, fixed or mobile. Nevertheless, if the aim is to determine and characterize the areas with different thermal reactions within a wider study area, for the separation of these areas having relatively homogeneous surface properties and human activity the mapping seems to be a useful application of the system. The objectives of this study are: to identify and delineate the LCZ types which occur in and around the neighbouring cities of Szeged (Hungary) and Novi Sad (Serbia) located in similar geographical environments using GIS methods developed earlier by the authors in order to calculate surface (geometric, cover and ene...
Theoretical and Applied Climatology, 2014
ABSTRACT
The spatial distribution of the annual mean urban heat island (UHI) intensity pattern was analyse... more The spatial distribution of the annual mean urban heat island (UHI) intensity pattern was analysed for the medium-sized city Novi Sad, Serbia, located on the low and flat Great Hungarian Plain. The UHI pattern was determined by an empirical modelling method developed by (Balázs et al. 2009). This method was based on datasets from urban areas of Szeged and Debrecen (Hungary). The urban study area in Novi Sad (60 km 2) was established as a grid network of 240 cells (0.5 km × 0.5 km). A Landsat satellite image (from June 2006) was used in order to evaluate normalized difference vegetation index and built-up ratio by cells. The pattern of the obtained UHI intensity values show concentric-like shapes when drawn as isotherms, mostly increase from the suburbs towards the inner urban areas. Results of this thermal pattern and determination of one of the local climate classification systems were used for recommending 10 locations for representative stations of an urban climate network in Novi Sad.
Urban Forestry & Urban Greening
Glasnik Srpskog geografskog drustva
In this study, the Local Climate Zones (LCZs) in Novi Sad, the second largest city in Serbia, are... more In this study, the Local Climate Zones (LCZs) in Novi Sad, the second largest city in Serbia, are analysed as to surface temperature differences. The LCZs were delineated on the basis of the GIS-based method created by Geletic & Lehnert (2016). Land Surface Temperatures (LSTs) were derived from the satellites Terra, sensor ASTER, and LANDSAT-8. The thermal images were provided at a similar time (at about 9.30 AM) between 2002 and 2008 (ASTER) and between 2013 and 2017 (LANDSAT-8). Statistical analyses, including the analysis of variance (ANOVA) and Tukey-HSD test, were employed to reveal LST differences between the LCZs. The results indicate that in 84% of cases there were significant differences in LST between pairs of LCZs. Temperature differences between LCZs were the most pronounced in the summer season. In general, 8 (large low-rise), 10 (heavy industry), 2 (compact midrise) and 3 (compact low-rise) LCZs had the highest surface temperatures in Novi Sad. Contrary to this, LCZs A...
ISPRS International Journal of Geo-Information
In the light of climate change and burgeoning urbanization, heat loads in urban areas have emerge... more In the light of climate change and burgeoning urbanization, heat loads in urban areas have emerged as serious issues, affecting the well-being of the population and the environment. In response to a pressing need for more standardised and communicable research into urban climate, the concept of local climate zones (LCZs) has been created. This concept aims to define the morphological types of (urban) surface with respect to the formation of local climatic conditions, largely thermal. This systematic review paper analyses studies that have applied the concept of LCZs to European urban areas. The methodology utilized pre-determined keywords and five steps of literature selection. A total of 91 studies were found eligible for analysis. The results show that the concept of LCZs has been increasingly employed and become well established in European urban climate research. Dozens of measurements, satellite observations, and modelling outcomes have demonstrated the characteristic thermal r...
Sustainability
The Urban Heat Islands (UHI) effect is a microclimatic phenomenon that especially affects urban a... more The Urban Heat Islands (UHI) effect is a microclimatic phenomenon that especially affects urban areas. It is associated with significant temperature increases in the local microclimate, and may amplify heat waves. Due to their intensity, UHI causes not only thermal discomfort, but also reductions in the levels of life quality. This paper reviews the important role of green infrastructure as a means through which the intensity of UHI may be reduced, along with their negative impact on human comfort and wellbeing. Apart from a comprehensive review of the available literature, the paper reports on an analysis of case studies in a set of 14 cities in 13 countries representing various geographical regions and climate zones. The results obtained suggest that whereas UHI is a common phenomenon, green infrastructure in urban areas may under some conditions ameliorate their impacts. In addition, the study revealed that the scope and impacts of UHI are not uniform: depending on peculiarities ...
Geographica Pannonica
A direct outcome of the global climate change is the modification of seasonal precipitation patte... more A direct outcome of the global climate change is the modification of seasonal precipitation patterns, apparent on a monthly temporal scale. In Central Europe, it includes more frequent high-intensity rainfalls, occurring mostly during spring and summer. These heavy rainfalls induce pluvial floods in urban areas due to a high percentage of impervious surfaces and limited drainage systems. This hazard affects Central European cities and impacts many receptors, including lives, infrastructures, private properties or the functioning of cities. This study focuses on the monitoring of precipitation events with the aim of revealing precipitation patterns across two different types of land cover: urban and suburban/rural areas of Novi Sad (Serbia). Measurements from seven rain gauge stations were used as input data, covering the 2015-2018 period. The precipitation data were analysed using 12 precipitation indices, nine of which were defined by the Expert Team on Climate Change Detection and Indices (ETCCDI), while three additional were designed specifically for this study. Based on their locations, the stations were classified into the 'urbanized' and 'non-urbanised' group. The concept of the Local Climate Zone (LCZ) was used to classify urbanised areas LCZ1-8, non-urbanised areas LCZ9 and the land cover zones (LCZ A-G). A statistical analysis based on the ANOVA F-test was conducted, defining the significance threshold at 90% for α = 0.01 and at 95% for α = 0.05. The obtained results revealed one relation for the CDD index at 95% and two relations at 90% for CDD and Rp95 indices, showing a relation between heavy rainfall and the type of land cover. Statistical results underline the need for a denser station network and longer monitoring periods in order to proceed to stronger statistical tests and make it possible to establish other relations with the climate indices.
Geographica Pannonica
Pluvial flooding is a result of overland flow and ponding before the runoff enters any watercours... more Pluvial flooding is a result of overland flow and ponding before the runoff enters any watercourse, drainage system or sewer, or cannot enter it because the network is full to capacity, usually caused by intense rainfall. River and coastal floods get the most attention since they are largest and last the longest, while pluvial floods are relatively marginalized in research. Therefore, the main goal of this research was to show risk posed by pluvial floods, their connection to current global climate change processes, present effects of flooding in European cities, as well as what we can expect in the future. Furthermore, the aims were to present and get more familiar with scientific projects, strategies, directives and measures devised both on national and international levels, that deal with urban pluvial flood issues across the European continent. Climate change projections indicate that there will be an increase in the frequency and intensity of rainfall events throughout Europe and along with ongoing urbanization, the problem of pluvial flooding will most certainly require more attention, which it is starting to receive. Some countries have already developed their strategies and initiatives and implemented both structural and non-structural measures, such as spatial planning, constructional measures, information systems, reducing land sealing through policies, building codes and standards, on-site improvement of retention, infiltration, evaporation, and rainfall water recycling with the use of green roofs, permeable or porous pavements, rain gardening or urban rainwater harvesting. At the same time, there are numerous research papers, studies, conferences and workshops devoted to the problem of pluvial flooding and its management carried out in an attempt to properly deal with this hazard.
Geographica Pannonica
The aim of this paper was to assess the impact of heatwaves on mortality in ten Czech cities, usi... more The aim of this paper was to assess the impact of heatwaves on mortality in ten Czech cities, using data recorded during the summers of 2015 and 2016. Temperature-related mortality during heatwaves was investigated by comparing mortality figures on heatwave days and those on other days by means of the Mann-Whitney U test. Results for all-cause mortality, cardiovascular and respiratory diseases (CVD+R) mortality, as well as for mortality in the over-65 age group, show statistically significant differences (p <0.05) during heatwaves compared with other days in seven of ten cities investigated. The effect of heatwaves on mortality did not reach statistical significance in Olomouc, Plzeň and Liberec. The results suggest that further studies addressing spatial patterns of mortality during heatwaves in urban areas are required to assess the vulnerability of the urban populations in particular cities and types of neighbourhood.
Dela
Analizirali smo letne in sezonske količine ter trende za 12 meteoroloških postaj v panonskem in o... more Analizirali smo letne in sezonske količine ter trende za 12 meteoroloških postaj v panonskem in obpanonskem delu Srbije za obdobje 1949–2010. Rezultati kažejo trend zmanjševanja padavin pozimi in spomladi ter trend porasta poleti in jeseni. Časovne serije letnih količin padavin kažejo porast padavin na večini preučevanih postaj in so posledica bolj namočenih let ter ekstremnih padavinskih dogodkov v zadnjih 15 letih. V preučevanem obdobju je bilo tudi 10 let z močno in ekstremno sušo s tendenco pojavljanja v več zaporednih letih. Dobro sliko o razporeditvi padavin je dala tudi metoda razvrščanja v skupine (cluster analiza).
The Science of the total environment, Jan 16, 2017
This study uses the MUKLIMO_3 urban climate model (in German, Mikroskaliges Urbanes KLImaMOdell i... more This study uses the MUKLIMO_3 urban climate model (in German, Mikroskaliges Urbanes KLImaMOdell in 3-Dimensionen) and measurements from an urban climate network in order to simulate, validate and analyse the spatiotemporal pattern of human thermal comfort outdoors in the city of Brno (Czech Republic) during a heat-wave period. HUMIDEX, a heat index designed to quantify human heat exposure, was employed to assess thermal comfort, employing air temperature and relative humidity data. The city was divided into local climate zones (LCZs) in order to access differences in intra-urban thermal comfort. Validation of the model results, based on the measurement dates within the urban monitoring network, confirmed that the MUKLIMO_3 micro-scale model had the capacity to simulate the main spatiotemporal patterns of thermal comfort in an urban area and its vicinity. The results suggested that statistically significant differences in outdoor thermal comfort exist in the majority of cases between...
Geographica Pannonica
Materials and methods According to Oke (1984) and Svensson et al. (2002) three types of models ca... more Materials and methods According to Oke (1984) and Svensson et al. (2002) three types of models can be applied for climate related research in urban environments: numerical, physical and empirically based models. For input model, authors were used model of annual mean UHI intensity created by Unger et al. (2011a; 2011b), that is based on empirical modeling study of Balázs et al. (2009). Statistical calculations were done
Geographica Pannonica
In the second part of the 20th century, urbanization accelerated and reached enormous magnitude, ... more In the second part of the 20th century, urbanization accelerated and reached enormous magnitude, which results more and more people live in urbanized regions. Nowadays, about half of the human population is affected by the burdens of urban environments and furthermore the modified parameters of the urban atmosphere compared to the natural environment.
Geographica Pannonica
This work analyses temperature characteristics in order to identify temperature trends in Novi Sa... more This work analyses temperature characteristics in order to identify temperature trends in Novi Sad area for the period between the years 1951-1990. The data used were obtained in meteorological stations in Rimski Šančevi and in Petrovaradin. This study presents annual mean temperatures, average values at 7, 14 and 21h, average mean maximum and minimum values and average values per different seasons, respectively. Different statistical methods (arithmetic mean, standard deviation and correlation coefficient) and formulae of vertical gradient of air temperature and thermal coefficient were applied when analyzing temperature values. On the basis of analyzed and given results, it can be concluded that Novi Sad area experiences the trend of air temperature rise. A significant temperature rise is recorded during winter and spring period, while similar trend of rise is noticed when minimum average temperatures are observed. On the other hand, average maximum values show a rather slower trend of rise or even the fall in temperature, while a significant trend of air temperature fall is recorded during summer and spring periods.
Geographica Pannonica
Detected break points were compared to metadata records in order to diagnose causes of featured i... more Detected break points were compared to metadata records in order to diagnose causes of featured inhomogeneities. That type of information was crucial for applying calculated corrections of investigated series. After the homogenisation process, the adjustment values have been analysed. The breaks which are explained in metadata are related to the relocations of the stations and show mostly low correction values. Differences between average values of raw and homogenised monthly time series are mostly within range from 0 to 0.12°C. According to low difference data, the results present very similar linear trends of original and homogenised time series for all stations. Still, there are a substantial changes of spatial distribution paterns. The patterns for homogenised series seem more regular, due to successful application of homogenisation process, making the image of climate variations in Vojvodina more reliable.
Geographica Pannonica
In this paper the near surface and tropospheric temperature trends are compared on the territory ... more In this paper the near surface and tropospheric temperature trends are compared on the territory of Vojvodina were investigated, on the basis of four sets of data from ground-based and satellite observation, for the period 1979-2005. The trend analysis has shown that there is no amplification of trend of air temperature increase with altitude. On the basis of our calculations, we obtained the results that the air temperature increase in Vojvodina, approximately 1.5 times higher in the near-surface layer, compared to lower and middle layers of troposphere. This shows flat or decreasing amplification with altitude, in contrary to some models.
Geologica Carpathica
Four loess units and three paleopedological layers are preserved in the ∼8 in thick Petrovaradin ... more Four loess units and three paleopedological layers are preserved in the ∼8 in thick Petrovaradin exposure, Vojvodina, Serbia. Amino acid geochronology provides stratigraphic correlations between loess units L1 and L2 at Petrovaradin with loess of glacial cycles B and C, respectively, at other Central European localities. Magnetic susceptibility and sedimentological evidence of the Petrovaradin loess-paleosol sequence are used for correlation with the SPECMAP paleoclimatic record. Late Pleistocene climate dynamics recorded in the Petrovaradin brickyard loess-paleosol sequence present temperate humid and warm interglacial and temperate cold glacial climatic conditions. The last glacial paleoclimatic record provides two main cold and dry stadial periods corresponding to deposition of two loess layers L1L1 and L1L2, as well as one moderate cold and relatively dry interstadial. Many episodes of alternating cold-dry and warm-wet paleoclimatic conditions suggest a possible correlation with...
The project is co-financed by the European Union 2 .3. Sitting and configuration of a representat... more The project is co-financed by the European Union 2 .3. Sitting and configuration of a representative urban climate (human comfort
The recently developed Local Climate Zones (LCZ) classification system as a climate-based system ... more The recently developed Local Climate Zones (LCZ) classification system as a climate-based system describes the physical conditions of the local-scale urbanized and non-urbanized environments universally and relative easily. The LCZ system was not originally designed for mapping, but to classify and standardize urban heat island observation sites, whether urban or rural, fixed or mobile. Nevertheless, if the aim is to determine and characterize the areas with different thermal reactions within a wider study area, for the separation of these areas having relatively homogeneous surface properties and human activity the mapping seems to be a useful application of the system. The objectives of this study are: to identify and delineate the LCZ types which occur in and around the neighbouring cities of Szeged (Hungary) and Novi Sad (Serbia) located in similar geographical environments using GIS methods developed earlier by the authors in order to calculate surface (geometric, cover and ene...
Theoretical and Applied Climatology, 2014
ABSTRACT
The spatial distribution of the annual mean urban heat island (UHI) intensity pattern was analyse... more The spatial distribution of the annual mean urban heat island (UHI) intensity pattern was analysed for the medium-sized city Novi Sad, Serbia, located on the low and flat Great Hungarian Plain. The UHI pattern was determined by an empirical modelling method developed by (Balázs et al. 2009). This method was based on datasets from urban areas of Szeged and Debrecen (Hungary). The urban study area in Novi Sad (60 km 2) was established as a grid network of 240 cells (0.5 km × 0.5 km). A Landsat satellite image (from June 2006) was used in order to evaluate normalized difference vegetation index and built-up ratio by cells. The pattern of the obtained UHI intensity values show concentric-like shapes when drawn as isotherms, mostly increase from the suburbs towards the inner urban areas. Results of this thermal pattern and determination of one of the local climate classification systems were used for recommending 10 locations for representative stations of an urban climate network in Novi Sad.