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Gidhagen, Lars
Publications (10 of 30) Show all publications
Amorim, J. H., Asker, C., Belusic, D., Carvalho, A., Engardt, M., Gidhagen, L., . . . Baklanov, A. (2018). Integrated Urban Services for European cities: the Stockholm case. WMO Bulletin, 67(2), 33-40
Open this publication in new window or tab >>Integrated Urban Services for European cities: the Stockholm case
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2018 (English)In: WMO Bulletin, ISSN 0042-9767, Vol. 67, no 2, p. 33-40Article in journal (Refereed) Published
Place, publisher, year, edition, pages
The World Meteorological Organization, 2018
National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-5183 (URN)
Available from: 2019-04-15 Created: 2019-04-15 Last updated: 2019-04-15Bibliographically approved
Segersson, D., Eneroth, K., Gidhagen, L., Johansson, C., Omstedt, G., Nylen, A. E. & Forsberg, B. (2017). Health Impact of PM10, PM2.5 and Black Carbon Exposure Due to Different Source Sectors in Stockholm, Gothenburg and Umea, Sweden. International Journal of Environmental Research and Public Health, 14(7), Article ID 742.
Open this publication in new window or tab >>Health Impact of PM10, PM2.5 and Black Carbon Exposure Due to Different Source Sectors in Stockholm, Gothenburg and Umea, Sweden
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2017 (English)In: International Journal of Environmental Research and Public Health, ISSN 1661-7827, E-ISSN 1660-4601, Vol. 14, no 7, article id 742Article in journal (Refereed) Published
National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-4291 (URN)10.3390/ijerph14070742 (DOI)000407370700074 ()
Available from: 2017-09-06 Created: 2017-09-06 Last updated: 2017-11-29Bibliographically approved
Fauser, P., Ketzel, M., Becker, T., Plejdrup, M. S., Brandt, J., Gidhagen, L., . . . Karppinen, A. (2017). Human exposure to carcinogens in ambient air in Denmark, Finland and Sweden. Atmospheric Environment, 167, 283-297
Open this publication in new window or tab >>Human exposure to carcinogens in ambient air in Denmark, Finland and Sweden
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2017 (English)In: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 167, p. 283-297Article in journal (Refereed) Published
National Category
Earth and Related Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-4311 (URN)10.1016/j.atmosenv.2017.08.033 (DOI)000412612200026 ()
Available from: 2017-11-13 Created: 2017-11-13 Last updated: 2017-11-13Bibliographically approved
Stockfelt, L., Andersson, E. M., Molnar, P., Gidhagen, L., Segersson, D., Rosengren, A., . . . Sallsten, G. (2017). Long-term effects of total and source-specific particulate air pollution on incident cardiovascular disease in Gothenburg, Sweden. Environmental Research, 158, 61-71
Open this publication in new window or tab >>Long-term effects of total and source-specific particulate air pollution on incident cardiovascular disease in Gothenburg, Sweden
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2017 (English)In: Environmental Research, ISSN 0013-9351, E-ISSN 1096-0953, Vol. 158, p. 61-71Article in journal (Refereed) Published
National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-4287 (URN)10.1016/j.envres.2017.05.036 (DOI)000408184700008 ()28600978 (PubMedID)
Available from: 2017-09-06 Created: 2017-09-06 Last updated: 2017-09-06Bibliographically approved
Willers, S. M., Eriksson, C., Gidhagen, L., Nilsson, M. E., Pershagen, G. & Bellander, T. (2013). Fine and coarse particulate air pollution in relation to respiratory health in Sweden. European Respiratory Journal, 42(4), 924-934
Open this publication in new window or tab >>Fine and coarse particulate air pollution in relation to respiratory health in Sweden
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2013 (English)In: European Respiratory Journal, ISSN 0903-1936, E-ISSN 1399-3003, Vol. 42, no 4, p. 924-934Article in journal (Refereed) Published
Abstract [en]

Health effects have repeatedly been associated with residential levels of air pollution. However, it is difficult to disentangle effects of long-term exposure to locally generated and long-range transported pollutants, as well as to exhaust emissions and wear particles from road traffic. We aimed to investigate effects of exposure to particulate matter fractions on respiratory health in the Swedish adult population, using an integrated assessment of sources at different geographical scales. The study was based on a nationwide environmental health survey performed in 2007, including 25 851 adults aged 18-80 years. Individual exposure to particulate matter at residential addresses was estimated by dispersion modelling of regional, urban and local sources. Associations between different size fractions or source categories and respiratory outcomes were analysed using multiple logistic regression, adjusting for individual and contextual confounding. Exposure to locally generated wear particles showed associations for blocked nose or hay fever, chest tightness or cough, and restricted activity days with odds ratios of 1.5-2 per 10-mu g.m(-3) increase. Associations were also seen for locally generated combustion particles, which disappeared following adjustment for exposure to wear particles. In conclusion, our data indicate that long-term exposure to locally generated road wear particles increases the risk of respiratory symptoms in adults.

National Category
Meteorology and Atmospheric Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-348 (URN)10.1183/09031936.00088212 (DOI)000325383100013 ()23314898 (PubMedID)
Available from: 2015-04-14 Created: 2015-03-31 Last updated: 2017-12-04Bibliographically approved
Gidhagen, L., Omstedt, G., Pershagen, G., Willers, S. & Bellander, T. (2013). High-resolution modeling of residential outdoor particulate levels in Sweden. Journal of Exposure Science and Environmental Epidemiology, 23(3), 306-314
Open this publication in new window or tab >>High-resolution modeling of residential outdoor particulate levels in Sweden
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2013 (English)In: Journal of Exposure Science and Environmental Epidemiology, ISSN 1559-0631, E-ISSN 1559-064X, Vol. 23, no 3, p. 306-314Article in journal (Refereed) Published
Abstract [en]

Large-scale exposure assessments that include both between- and within-city differences in air pollution levels are lacking. The objective of this study was to model long-term particle exposure for the whole of Sweden, separating long-range transport from local sources, which were further separated into combustion and road dust. Annual regional, urban and local traffic PM exposure contributions were modeled for 26,000 addresses from a national survey, using a European scale model, an urban model and a local traffic model. Total PM10 was overall dominated by the regional contribution, ranging from 3.5 mu g/m(3) (northernmost) to 13.5 mu g/m(3) (southernmost). Local traffic and urban sources contributed nationally on average to 16% of total PM10, but for urban populations this contribution was larger (for Stockholm around 30%). Generalized to the Swedish adult population, the average residential exposure contributions from regional, urban and local traffic PM10 were 10.2, 1.3 and 0.2 mu g/m(3), respectively. Corresponding exposure to PM, was 5.1, 0.5 and 0.03 mu g/m(3), respectively. Long-range transport dominates average Swedish residential PM1 and PM10 levels, but for urban populations the contributions from urban and local traffic sources are important and may even dominate for residences close to heavily trafficked roads. The study shows the importance of considering both national and city-scale gradients. The approach to exposure modeling at home addresses of a Swedish cohort includes both the regional scale and the urban and local traffic contributions to total PM exposure. With this we can resolve both between- and within-city gradients in national exposure assessments. The within-city exposure is further divided into a submicron (combustion) and a supermicron (road dust generated by studded tires) part. This gives new possibilities to study health impacts of different particles generated in Scandinavian cities. Journal of Exposure Science and Environmental Epidemiology (2013) 23, 306-314; doi:10.1038/jes.2012.122; published online 23 January 2013

Keywords
National modeling system, exposure, PM10, long-range transport, combustion particles, road wear particles
National Category
Meteorology and Atmospheric Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-379 (URN)10.1038/jes.2012.122 (DOI)000317556300011 ()23340704 (PubMedID)
Available from: 2015-04-07 Created: 2015-03-31 Last updated: 2017-12-04Bibliographically approved
Olsson, J., Gidhagen, L., Gamerith, V., Gruber, G., Hoppe, H. & Kutschera, P. (2012). Downscaling of Short-Term Precipitation from Regional Climate Models for Sustainable Urban Planning. Sustainability, 4(5), 866-887
Open this publication in new window or tab >>Downscaling of Short-Term Precipitation from Regional Climate Models for Sustainable Urban Planning
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2012 (English)In: Sustainability, ISSN 2071-1050, E-ISSN 2071-1050, Vol. 4, no 5, p. 866-887Article in journal (Refereed) Published
Abstract [en]

A framework for downscaling precipitation from RCM projections to the high resolutions in time and space required in the urban hydrological climate change impact assessment is outlined and demonstrated. The basic approach is that of Delta Change, developed for both continuous and event-based applications. In both cases, Delta Change Factors (DCFs) are calculated which represent the expected future change of some key precipitation statistics. In the continuous case, short-term precipitation from climate projections are analysed in order to estimate DCFs associated with different percentiles in the frequency distribution of non-zero intensities. The DCFs may then be applied to an observed time series, producing a realisation of a future time series. The event-based case involves downscaling of Intensity-Duration-Frequency (IDF) curves based on extreme value analysis of annual maxima using the Gumbel distribution. The resulting DCFs are expressed as a function of duration and frequency (i.e., return period) and may be used to estimate future design storms. The applications are demonstrated in case studies focusing on the expected changes in short-term precipitation statistics until 2100 in the cities of Linz (Austria) and Wuppertal (Germany). The downscaling framework is implemented in the climate service developed within the EU-project SUDPLAN.

Keywords
climate change, intense precipitation, urban hydrology
National Category
Oceanography, Hydrology and Water Resources
Research subject
Hydrology
Identifiers
urn:nbn:se:smhi:diva-461 (URN)10.3390/su4050866 (DOI)000324040000005 ()
Available from: 2015-04-20 Created: 2015-04-14 Last updated: 2018-01-11Bibliographically approved
Gidhagen, L., Engardt, M., Lovenheim, B. & Johansson, C. (2012). Modeling Effects of Climate Change on Air Quality and Population Exposure in Urban Planning Scenarios. Advances in Meteorology, Article ID 240894.
Open this publication in new window or tab >>Modeling Effects of Climate Change on Air Quality and Population Exposure in Urban Planning Scenarios
2012 (English)In: Advances in Meteorology, ISSN 1687-9309, E-ISSN 1687-9317, article id 240894Article in journal (Refereed) Published
Abstract [en]

We employ a nested system of global and regional climate models, linked to regional and urban air quality chemical transport models utilizing detailed inventories of present and future emissions, to study the relative impact of climate change and changing air pollutant emissions on air quality and population exposure in Stockholm, Sweden. We show that climate change only marginally affects air quality over the 20-year period studied. An exposure assessment reveals that the population of Stockholm can expect considerably lower NO2 exposure in the future, mainly due to reduced local NOx emissions. Ozone exposure will decrease only slightly, due to a combination of increased concentrations in the city centre and decreasing concentrations in the suburban areas. The increase in ozone concentration is a consequence of decreased local NOx emissions, which reduces the titration of the long-range transported ozone. Finally, we evaluate the consequences of a planned road transit project on future air quality in Stockholm. The construction of a very large bypass road (including one of the largest motorway road tunnels in Europe) will only marginally influence total population exposure, this since the improved air quality in the city centre will be complemented by deteriorated air quality in suburban, residential areas.

National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-477 (URN)10.1155/2012/240894 (DOI)000308499800001 ()
Available from: 2015-04-15 Created: 2015-04-14 Last updated: 2017-12-04Bibliographically approved
Eriksson, C., Nilsson, M. E., Willers, S. M., Gidhagen, L., Bellander, T. & Pershagen, G. (2012). Traffic noise and cardiovascular health in Sweden: The roadside study. Noise & Health, 14(59), 140-147
Open this publication in new window or tab >>Traffic noise and cardiovascular health in Sweden: The roadside study
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2012 (English)In: Noise & Health, ISSN 1463-1741, E-ISSN 1998-4030, Vol. 14, no 59, p. 140-147Article in journal (Refereed) Published
Abstract [en]

Long-term exposure to traffic noise has been suggested to increase the risk of cardiovascular diseases (CVD). However, few studies have been performed in the general population and on railway noise. This study aimed to investigate the cardiovascular effects of living near noisy roads and railways. This cross-sectional study comprised 25,851 men and women, aged 18-80 years, who had resided in Sweden for at least 5 years. All subjects participated in a National Environmental Health Survey, performed in 2007, in which they reported on health, annoyance reactions and environmental factors. Questionnaire data on self-reported doctors diagnosis of hypertension and/or CVD were used as outcomes. Exposure was assessed as Traffic Load (millions of vehicle kilometres per year) within 500 m around each participants residential address. For a sub-population (n = 2498), we also assessed road traffic and railway noise in L den at the dwelling facade. Multiple logistic regression models were used to assess Prevalence Odds Ratios (POR) and 95 Confidence Intervals (CI). No statistically significant associations were found between Traffic Load and self-reported hypertension or CVD. In the sub-population, there was no association between road traffic noise and the outcomes; however, an increased risk of CVD was suggested among subjects exposed to railway noise >= 50 dB(A); POR 1.55 (95 CI 1.00-2.40). Neither Traffic Load nor road traffic noise was, in this study, associated with self-reported cardiovascular outcomes. However, there was a borderline-significant association between railway noise and CVD. The lack of association for road traffic may be due to methodological limitations.

Keywords
Air pollution, cardiovascular disease, community noise, epidemiology, hypertension
National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-452 (URN)10.4103/1463-1741.99864 (DOI)000308866400002 ()22918143 (PubMedID)
Available from: 2015-04-20 Created: 2015-04-14 Last updated: 2017-12-04Bibliographically approved
Omstedt, G., Forsberg, B., Nerhagen, L., Gidhagen, L. & Andersson, S. (2011). SIMAIRscenario - ett modellverktyg för bedömning av luftföroreningars hälsoeffekter och kostnader.
Open this publication in new window or tab >>SIMAIRscenario - ett modellverktyg för bedömning av luftföroreningars hälsoeffekter och kostnader
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2011 (Swedish)Report (Other academic)
Abstract [sv]

SIMAIRscenario är ett nytt webbaserat modellverktyg för bedömning av luftföroreningars hälsoeffekter och kostnader. Det tillhör SIMAIR familjen, som är ett nationellt modellsystem för emissioner och luftkvalitet. I SIMAIRscenario kan följande göras:  Importera haltfält från olika spridningsmodeller som t.ex. SIMAIR och Airviro.  Bearbeta dessa med hjälp av olika matematiska operatorer.  Importera och lagra detaljerade befolkningsdata för hela Sverige och bearbeta dessa med hjälp av olika matematiska operatorer.  Presentera halter och befolkningsdata på karta.  Utföra exponeringsberäkningar för olika halt- och befolkningsfält och presentera beräkningsresultaten på karta och i tabeller.  Beräkna risker i form av extra hälsoutfall och göra ekonomisk värdering av dessa. Med hjälp av SIMAIRscenario kan nyttan av förbättrad luftkvalitet mellan ett basfall och ett scenariofall beräknas, uttryckt som hälsovinst och kostnadsvinst. Verktyget är därför speciellt lämpad som ett planeringsverktyg för olika alternativa förändringar av emissioner och halter. Exempel på en sådan tillämpning ges i rapporten. I denna rapport presenteras SIMAIRscenario tillsammans med översiktliga beskrivningar av kunskapsläget vad gäller hälsoeffekter från luftföroreningar och ekonomiska värderingar av dessa. Varje del i beräkningarna innehåller osäkerheter. Det gäller såväl för haltberäkningar som för hälsouppskattningar och ekonomiska värderingar. Det är därför angeläget att genomföra analyser av dessa och också ta fram en metodik för att kvantifiera osäkerheten i de olika beräkningsstegen. Detta är dock en komplicerad problemställning som inte rymts i det här redovisade projektet. SMHI föreslår att en sådan metodik utvecklas som ett eget projekt.

Abstract [en]

SIMAIRscenario is a new web based tool developed for estimation of health impacts and economic benefits occurring when populations experience changes in air quality. It is a new member of the SIMAIR family, which is a national air quality system for Sweden. In SIMAIRscenario following can be done: 1. Import air quality data fields from different dispersion models such as SIMAIR and Airviro. 2. Process air quality data by different mathematical operators. 3. Import and store detailed population data and process them by different mathematical operators. Population data for the year 2008 divided in different age groups with the resolution of 100*100 meters for the whole country is now available. 4. Presentation of air quality and population data on maps. 5. Perform exposure calculations and presents results on maps and in tables. 6. Perform health impact assessments and valuation of these impacts in monetary terms. The air quality change is calculated as the difference between the starting air pollution level, also called the baseline, and the air pollution level after some change, also called the scenario. The scenario can be described as a major change in activities or technical solutions in an urban or regional area or a regulation leading to different emissions to the atmosphere compare to the baseline.

Series
Meteorology, ISSN 0283-7730 ; 146
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
urn:nbn:se:smhi:diva-4455 (URN)
Available from: 2017-12-18 Created: 2017-12-18 Last updated: 2017-12-18Bibliographically approved
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