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Interannual variation and trends in air pollution over Europe due to climate variability during 1958–2001 simulated with a regional CTM coupled to the ERA40 reanalysis
Stockholms universitet, Naturvetenskapliga fakulteten, Institutionen för tillämpad miljövetenskap (ITM).
2007 (engelsk)Inngår i: Tellus. Series B, Chemical and physical meteorology, ISSN 0280-6509, E-ISSN 1600-0889, Vol. 59, s. 77-98Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

A three-dimensional Chemistry Transport Model was used to study the meteorologically induced interannual variability and trends in deposition of sulphur and nitrogen as well as concentrations of surface ozone (O3), nitrogen dioxide (NO2) and particulate matter (PM) and its constituents over Europe during 1958–2001. The model was coupled to the meteorological reanalysis ERA40, produced at the European Centre for Medium-range Weather Forecasts. Emissions and boundary conditions of chemical compounds and PM were kept constant at present levels.

The average European interannual variation, due to meteorological variability, ranges from 3% for O3, 5%for NO2, 9% for PM, 6–9% for dry deposition, to about 20% for wet deposition of sulphur and nitrogen. For the period 1979–2001 the trend in ozone, due to climate variability is increasing in central and southwestern Europe and decreasing in northeastern Europe, the trend in NO2 is approximately opposite. The trend in PM is positive in eastern Europe. There are negative trends in wet deposition in southwestern and central Europe and positive trends in dry deposition overall. A bias in ERA40 precipitation could be partly responsible for the trends. The variation and trends need to be considered when interpreting measurements and designing measurement campaigns.

sted, utgiver, år, opplag, sider
Stockholm: Tellus , 2007. Vol. 59, s. 77-98
HSV kategori
Forskningsprogram
tillämpad miljövetenskap
Identifikatorer
URN: urn:nbn:se:su:diva-25946DOI: 10.1111/j.1600-0889.2006.00196.xISI: 000243681100008OAI: oai:DiVA.org:su-25946DiVA, id: diva2:201008
Tilgjengelig fra: 2009-03-02 Laget: 2009-03-02 Sist oppdatert: 2017-12-13bibliografisk kontrollert
Inngår i avhandling
1. Air Pollution Dependency on Climate Variability and Source Region: Past, Current and Future Air Pollution Scenarios over Europe
Åpne denne publikasjonen i ny fane eller vindu >>Air Pollution Dependency on Climate Variability and Source Region: Past, Current and Future Air Pollution Scenarios over Europe
2009 (engelsk)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The main objectives of this thesis were to investigate the dependency of European air pollution on climate variability and emission source region. Calculations with a chemistry transport model (CTM) were conducted to investigate the influence of climate variability. The CTM was forced by both simulated past (a re-analysis spanning 1958-2001) and future (a climate simulation spanning 1961-2100) meteorology keeping anthropogenic emissions constant. To investigate the influence of emission source region emissions were varied in western, eastern and northern Europe in seven-year (1997-2003) simulations.

The main conclusions in this thesis are

§         There is variability in air pollution due to climate variability on time scales from year to year to decades and long-term trends. Hence, what is measured now will not be valid in a decade, or even next year.

§         Interannual variability in air pollution due to climate variability is greater than interannual variability in anthropogenic emissions.

§         The extreme conditions in 2003, resulting in elevated surface O3 concentrations, could be an indication on what we can expect in the future.

§         The trend in surface O3 over the past due to climate change is similar to the projected trend due to future climate change: increasing in south-western and central Europe and decreasing in north-eastern Europe.

§         Changes in isoprene emissions and dry deposition dependency on soil moisture are of importance for changes in surface O3 in central and southern Europe. It is vital to include these processes, especially the latter in climate change effect studies of surface O3.

§         This work indicates that it is of greater importance for health benefits of the European population to reduce primary PM emissions than precursors of secondary inorganic aerosol under the assumption of higher relative risk for primary PM. This is especially the case in western Europe.

sted, utgiver, år, opplag, sider
Stockholm: Department of Applied Environmental Science (ITM), Stockholm University, 2009. s. 55
Emneord
Acidification, Air Pollution, Climate Change, Europe, Numerical Model, Emission, Eutrophication, Key region, Nitrogen Dioxide, Particulate Matter, PM, Source region, Surface Ozone, Tropospheric Ozone
HSV kategori
Forskningsprogram
tillämpad miljövetenskap
Identifikatorer
urn:nbn:se:su:diva-25947 (URN)978-91-7155-828-2 (ISBN)
Disputas
2009-04-03, William Olssonsalen, Svante Arrhenius väg 8A, Geovetenskapens hus, 13:00 (engelsk)
Opponent
Veileder
Tilgjengelig fra: 2009-03-12 Laget: 2009-03-02 Sist oppdatert: 2009-03-23bibliografisk kontrollert

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