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Bergström, Robert
Publications (10 of 54) Show all publications
Olenius, T., Bergström, R., Kubecka, J., Myllys, N. & Elm, J. (2023). Reducing chemical complexity in representation of new-particle formation: evaluation of simplification approaches. Environmental Science: Atmospheres
Open this publication in new window or tab >>Reducing chemical complexity in representation of new-particle formation: evaluation of simplification approaches
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2023 (English)In: Environmental Science: Atmospheres, E-ISSN 2634-3606Article in journal (Refereed) Published
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
urn:nbn:se:smhi:diva-6406 (URN)10.1039/d2ea00174h (DOI)000919771900001 ()
Available from: 2023-02-28 Created: 2023-02-28 Last updated: 2023-02-28Bibliographically approved
Bergström, R. (2022). Update and comparison of atmospheric chemistry mechanisms for the EMEP MSC-W model system: EmChem19a, EmChem19X, CRIv2R5Em, CB6r2Em, and MCMv3.3Em.
Open this publication in new window or tab >>Update and comparison of atmospheric chemistry mechanisms for the EMEP MSC-W model system: EmChem19a, EmChem19X, CRIv2R5Em, CB6r2Em, and MCMv3.3Em
2022 (English)Report (Other academic)
National Category
Meteorology and Atmospheric Sciences
Identifiers
urn:nbn:se:smhi:diva-6445 (URN)
Available from: 2023-05-16 Created: 2023-05-16 Last updated: 2023-05-16
Simpson, D., Bergström, R., Briolat, A., Imhof, H., Johansson, J., Priestley, M. & Valdebenito, A. (2020). GenChem v1.0-a chemical pre-processing and testing system for atmospheric modelling. Geoscientific Model Development, 13(12), 6447-6465
Open this publication in new window or tab >>GenChem v1.0-a chemical pre-processing and testing system for atmospheric modelling
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2020 (English)In: Geoscientific Model Development, ISSN 1991-959X, E-ISSN 1991-9603, Vol. 13, no 12, p. 6447-6465Article in journal (Refereed) Published
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
urn:nbn:se:smhi:diva-6044 (URN)10.5194/gmd-13-6447-2020 (DOI)000602510400003 ()
Available from: 2021-01-19 Created: 2021-01-19 Last updated: 2021-01-19Bibliographically approved
Bergström, R. (2020). How should condensables be included in PM emission inventories reported to EMEP/CLRTAP?. EMEP (4), 1-72
Open this publication in new window or tab >>How should condensables be included in PM emission inventories reported to EMEP/CLRTAP?
2020 (English)In: EMEP, ISSN 1504-6206, no 4, p. 1-72Article in journal (Other academic) Published
Abstract [en]

Condensable primary organic aerosol emissions are a class of organic compounds that arevapour phase at stack conditions, but which undergo both condensation and evaporation processes as the stack air is cooled and diluted upon discharge into ambient air. Emission factorsmeasured in or close to the high-temperature high-concentration exhaust stack or pipe maymisrepresent, and even miss, the amount of PM or gas that actually enters the atmosphere,depending on the filters, dilution and sampling conditions of the emission measurement. Inthe current emission reporting to EMEP/CLRTAP there is no clear definition of whether condensable organics are included or not, and, if included, to what extent.

In March 2020 MSC-W hosted an expert workshop on condensable organic aerosol emissions (funded by the Nordic Council of Ministers), which brought together experts in emissions, measurements, emission inventories, atmospheric chemistry, air quality models andpolicy from Europe and North America, and to create a much better understanding of theissues and possible approaches for dealing with this important class of compounds.

More than 30 experts took part in the (zoom) meeting, including EMEP Chairs (EMEPSteering Body, TFIAM, TFMM, TFEIP, TFTEI), EMEP Centres (MSC-W, CEIP, CIAM),inventory developers (TNO, CIAM, COPERT, and national experts from UBA - Germany,SINTEF - Norway, IVL, ACES, Swedish EPA - Sweden, CITEPA, INERIS - France, ECCC- Canada, Univ. Patras - Greece), measurement experts (PSI - Switzerland, INERIS - France,Univ. York - England, NC State University - USA), industry (Concawe), the US EPA and theEuropean Commission. The workshop discussed a number of approaches for dealing with thisimportant class of compounds. This executive summary presents some of the key messagesfrom the workshop. Further background, addressing the technical matters in more detail canbe found in the main body of the report.

The main idea of the workshop was to promote discussion among different communitiesand Task Forces that have different expertise and needs with regard to condensable organics and PM emission inventories. In order to aid these discussions, a number of importantquestions were identified:

1. For which source categories are condensable organics important?

2. What is included in official national and other emission inventories?

3. Do we expect emissions of condensable organics to be missing in these inventories?

4. Can we reliably predict the contribution of condensable vapours from major sources toambient PM using data from a smaller number of representative cases?

5. Can we recommend a practical approach for inclusion (or exclusion) of condensables in (a) emission inventories, and (b) chemical transport models?

One of the ongoing major tasks for the Air Convention (CLRTAP) is the revision of the socalled ‘Gothenburg’ Protocol 1, with a final report of the review to be completed during 2022.It is important to note that for this review process, the consideration of condensables facesseveral (competing) challenges:

(a) The need for emission data as soon as possible that are consistent across countries inorder to get a fair ‘optimised’ distribution of emission abatement efforts aimed at improving health and ecosystems protection targets;

(b) The difficulties to change existing practices of some countries;

(c) The wish of scientists to start multi-year work programs for the best possible way todefine and quantify condensable emissions and/or secondary PM formation in the atmosphere.

(d) The need to assess the available options for short and longer term actions in terms ofe.g. time frame (feas

National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-6062 (URN)
Available from: 2021-02-09 Created: 2021-02-09 Last updated: 2021-02-09Bibliographically approved
Langner, J., Gidhagen, L., Bergström, R., Gramsch, E., Oyola, P., Reyes, F., . . . Aguilera, C. (2020). Model-simulated Source Contributions to PM2.5 in Santiago and the Central Region of Chile. Aerosol and Air Quality Research, 20(5), 1111-1126
Open this publication in new window or tab >>Model-simulated Source Contributions to PM2.5 in Santiago and the Central Region of Chile
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2020 (English)In: Aerosol and Air Quality Research, ISSN 1680-8584, E-ISSN 2071-1409, Vol. 20, no 5, p. 1111-1126Article in journal (Refereed) Published
National Category
Meteorology and Atmospheric Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-5688 (URN)10.4209/aaqr.2019.08.0374 (DOI)000530887900019 ()
Available from: 2020-05-19 Created: 2020-05-19 Last updated: 2020-06-16Bibliographically approved
Bergström, R. (2020). Transboundary particulate matter, photo-oxidants, acidifying and eutrophying components. EMEP (1), 1-270
Open this publication in new window or tab >>Transboundary particulate matter, photo-oxidants, acidifying and eutrophying components
2020 (English)In: EMEP, ISSN 1504-6192, no 1, p. 1-270Article in journal (Other academic) Published
Abstract [en]

This report presents the EMEP activities in 2019 and 2020 in relation to transboundary fluxesof particulate matter, photo-oxidants, acidifying and eutrophying components, with focus onresults for 2018. It presents major results of the activities related to emission inventories,observations and modelling. The report also introduces specific relevant research activitiesaddressing EMEP key challenges, as well as technical developments of the observation andmodelling capacities.

National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-6063 (URN)
Available from: 2021-02-09 Created: 2021-02-09 Last updated: 2021-02-09Bibliographically approved
Noda, J., Bergström, R., Kong, X., Gustafsson, T. L., Kovacevik, B., Svane, M. & Pettersson, J. B. C. (2019). Aerosol from Biomass Combustion in Northern Europe: Influence of Meteorological Conditions and Air Mass History. Atmosphere, 10(12), Article ID 789.
Open this publication in new window or tab >>Aerosol from Biomass Combustion in Northern Europe: Influence of Meteorological Conditions and Air Mass History
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2019 (English)In: Atmosphere, ISSN 2073-4433, E-ISSN 2073-4433, Vol. 10, no 12, article id 789Article in journal (Refereed) Published
National Category
Meteorology and Atmospheric Sciences
Research subject
Meteorology
Identifiers
urn:nbn:se:smhi:diva-5624 (URN)10.3390/atmos10120789 (DOI)000507369200062 ()
Available from: 2020-02-04 Created: 2020-02-04 Last updated: 2020-02-04Bibliographically approved
Theobald, M. R., Vivanco, M. G., Aas, W., Andersson, C., Ciarelli, G., Couvidat, F., . . . Colette, A. (2019). An evaluation of European nitrogen and sulfur wet deposition and their trends estimated by six chemistry transport models for the period 1990-2010. Atmospheric Chemistry And Physics, 19(1), 379-405
Open this publication in new window or tab >>An evaluation of European nitrogen and sulfur wet deposition and their trends estimated by six chemistry transport models for the period 1990-2010
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2019 (English)In: Atmospheric Chemistry And Physics, ISSN 1680-7316, E-ISSN 1680-7324, Vol. 19, no 1, p. 379-405Article in journal (Refereed) Published
National Category
Earth and Related Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-5149 (URN)10.5194/acp-19-379-2019 (DOI)000455794000002 ()
Available from: 2019-01-29 Created: 2019-01-29 Last updated: 2019-01-29Bibliographically approved
McFiggans, G., Mentel, T. F., Wildt, J., Pullinen, I., Kang, S., Kleist, E., . . . Kiendler-Scharr, A. (2019). Secondary organic aerosol reduced by mixture of atmospheric vapours. Nature, 565(7741), 587-593
Open this publication in new window or tab >>Secondary organic aerosol reduced by mixture of atmospheric vapours
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2019 (English)In: Nature, ISSN 0028-0836, E-ISSN 1476-4687, Vol. 565, no 7741, p. 587-593Article in journal (Refereed) Published
National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-5162 (URN)10.1038/s41586-018-0871-y (DOI)000457404000037 ()30700872 (PubMedID)
Available from: 2019-02-12 Created: 2019-02-12 Last updated: 2019-02-12Bibliographically approved
Jenkin, M. E., Khan, M. A., Shallcross, D. E., Bergström, R., Simpson, D., Murphy, K. L. & Rickard, A. R. (2019). The CRI v2.2 reduced degradation scheme for isoprene. Atmospheric Environment, 212, 172-182
Open this publication in new window or tab >>The CRI v2.2 reduced degradation scheme for isoprene
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2019 (English)In: Atmospheric Environment, ISSN 1352-2310, E-ISSN 1873-2844, Vol. 212, p. 172-182Article in journal (Refereed) Published
National Category
Environmental Sciences
Research subject
Environment
Identifiers
urn:nbn:se:smhi:diva-5234 (URN)10.1016/j.atmosenv.2019.05.055 (DOI)000474323500020 ()
Available from: 2019-07-30 Created: 2019-07-30 Last updated: 2019-07-30Bibliographically approved
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