Spatial variations in nitrogen dioxide concentrations in urban Ljubljana, Slovenia

Mally, Katja Vintar; Ogrin, Matej

doi:10.1515/mgr-2015-0015

Cited by 11 publications

(5 citation statements)

References 11 publications

(11 reference statements)

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“…Not only would air quality deteriorate in many urban areas and have a negative impact on public health, the growth of traffic in urban areas would increase the traffic loads on road infrastructures, leading to a rapid increase in congestion and a deterioration in accessibility. Studies from Slovenia's capital Ljubljana confirmed poor air quality in major city roads within the period 2005 to 2013 (Ogrin and Vintar Mally 2013;Vintar Mally and Ogrin 2015). Since then, some streets in the centre of Ljubljana have been closed to motorized individual traffic and remained open to public transport, and air quality in these areas has improved.…”

Section: Discussionmentioning

confidence: 99%

COVID-19 impact on daily mobility in Slovenia

Brezina¹,

Tiran

Ogrin

et al. 2021

AGS

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The Slovenian subsample (n=415) of an international online survey about changes in daily mobility during the COVID-19 outbreak in the spring of 2020 was analysed from a geographical perspective. The dataset was split into three spatial classes (urban, transitional and rural) according to the respondents’ place of residence. People’s behaviour before and during the COVID-19 lockdown was compared and analysed in terms of commuting frequency, changes in mode choice for commuting and style of grocery shopping. The results show that commuting was reduced drastically during the lockdown while the car remained the main transport mode both for commuting and shopping, especially in rural areas. The study provides an unprecedented insight in travel behaviour changes due to the pandemic and congruously argues for improved transport policies to meet climate change and public health challenges.

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Section: Discussionmentioning

confidence: 99%

COVID-19 impact on daily mobility in Slovenia

Brezina¹,

Tiran

Ogrin

et al. 2021

AGS

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“…Rezultati so v okviru pričakovanj glede na podobne meritve v preteklih letih v Ljubljani ob cestah s podobnimi obremenitvami (npr. Ogrin, 2007;Vintar Mally, Ogrin, 2015). Ugotavljamo, da kljub prevladujoči južni smeri vetrov nad Ljubljano v času meritev ti očitno niso bistveno vplivali na asimetričnost razporeditve koncentracij.…”

Section: Koncentracije Dušikovega Dioksida Na Lavriciunclassified

Meritve koncentracij črnega ogljika in dušikovega dioksida na Lavrici in v Kranju

Strle¹,

Svetlin²,

Glojek³

et al. 2022

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Onesnaženost zraka v urbanih območjih je pomemben dejavnik kakovosti življenja, nesporen pa je tudi vpliv kakovosti zraka na zdravje ljudi. Med pomembna onesnaževala urbanega ozračja že desetletja uvrščamo dušikov dioksid (NO2), po letu 2000 pa se vse več raziskav posveča tudi črnemu ogljiku (BC). V prispevku predstavljamo stacionarne in mobilne meritve črnega ogljika ter stacionarne meritve dušikovega dioksida v urbanem območju na dveh primerih. V prvem primeru gre za ugotavljanje vpliva ceste na kakovost zraka v neposredni okolici vrtca in nekdanje osnovne šole na Lavrici, v drugem primeru pa so prikazani rezultati meritev črnega ogljika na cestnem omrežju Kranja v gosti prostorski mreži.

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“…Emissions from road transport have been identified as the main source of ambient air pollution in Slovenian urban areas as well as worldwide, especially in European and North American cities [1][2][3][4][5][6]. Many documents emphasise that air pollution is a major health problem for the world population, as 55% of the world population lives in urban areas [7][8][9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

“…Long-term exposure to nitrogen dioxide (NO 2 ) has been linked to a wide range of serious health problems such as hypertension, diabetes, heart and cardiovascular disease and even death [17]. Furthermore, these gases contribute to the formation of acid rain and tropospheric ozone (O 3 ) as well as to the eutrophication of water and soil [1,18,19].…”

Section: Introductionmentioning

confidence: 99%

“…The first aim of our study was to determine the effects of traffic on NO 2 concentrations during the extreme lockdown event compared to historical data (years 2018 and 2019) and considering the variations in emissions and meteorological conditions in a small city. On the basis of previous studies, the hypothesis has been put forward that road traffic is the dominant source of NO 2 in Maribor and also the dispersion process of this pollutant in ambient air [1,41]. Positive and negative correlations between meteorological variables and NO 2 were discussed based on studies in urban areas in Banja Luka, BIH [42,43], and results from Masey et.…”

Section: Introductionmentioning

confidence: 99%

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How the Volume of Traffic Affected Air Quality During the Extreme Event of COVID-19 Lockdown in a Small City

Trček

Kamnik

2022

PROMTT

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The extreme traffic measures during the COVID-19 lockdown provided a unique opportunity to gain better insight into the relationship between traffic characteristics and NO2 concentrations in Maribor, a small Slovenian city. NO2, traffic and meteorological data were statistically processed in detail for March and April 2018, 2019 and 2020 to get a historical insight and to exclude the specifics of the lockdown period. The extreme event resulted in an average reduction of road traffic of 42%. The decrease in the number of passenger cars ranged from 33.9 to 60.3% per day with the largest decrease on the motorway. Daily averages of heavy goods traffic declined on the motorway and the expressway by 24.6% and 7%, respectively. Traffic characteristics were reflected in a 24–27% decrease in NO2 concentrations at the urban station. The change is smaller than the change in traffic volume, which could be explained by the change in the composition of the vehicle fleet due to the increase in NO2-dominant traffic sources, e.g. diesel heavy goods vehicles. The presented results are relevant for improving air quality and sustainable mobility management in small cities. They highlight the important role of reorganisation of heavy goods traffic in urban logistics.

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Spatial variations in nitrogen dioxide concentrations in urban Ljubljana, Slovenia

Abstract: Ambient nitrogen dioxide (NO 2

Cited by 11 publications

References 11 publications

COVID-19 impact on daily mobility in Slovenia

COVID-19 impact on daily mobility in Slovenia

Meritve koncentracij črnega ogljika in dušikovega dioksida na Lavrici in v Kranju

How the Volume of Traffic Affected Air Quality During the Extreme Event of COVID-19 Lockdown in a Small City

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