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174 results on '"Gehrig, R."'

3. Spatial and temporal variations in airborne Ambrosia pollen in Europe

Author

Sikoparija, B., Skjøth, C. A., Celenk, S., Testoni, C., Abramidze, T., Alm Kübler, K., Belmonte, J., Berger, U., Bonini, M., Charalampopoulos, A., Damialis, A., Clot, B., Dahl, Å., de Weger, L. A., Gehrig, R., Hendrickx, M., Hoebeke, L., Ianovici, N., Kofol Seliger, A., Magyar, D., Mányoki, G., Milkovska, S., Myszkowska, D., Páldy, A., Pashley, C. H., Rasmussen, K., Ritenberga, O., Rodinkova, V., Rybníček, O., Shalaboda, V., Šaulienė, I., Ščevková, J., Stjepanović, B., Thibaudon, M., Verstraeten, C., Vokou, D., Yankova, R., and Smith, M.

Published
2017
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6. Recommended terminology for aerobiological studies

Author

Galán, C., Ariatti, A., Bonini, M., Clot, B., Crouzy, B., Dahl, A., Fernandez-González, D., Frenguelli, G., Gehrig, R., Isard, S., Levetin, E., Li, D. W., Mandrioli, P., Rogers, C. A., Thibaudon, M., Sauliene, I., Skjoth, C., Smith, M., and Sofiev, M.

Published
2017
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9. Geographic and temporal variations in pollen exposure across Europe

Author

Smith, M., Jäger, S., Berger, U., Šikoparija, B., Hallsdottir, M., Sauliene, I., Bergmann, K-C., Pashley, C. H., de Weger, L., Majkowska-Wojciechowska, B., Rybníček, O., Thibaudon, M., Gehrig, R., Bonini, M., Yankova, R., Damialis, A., Vokou, D., Bustillo, Gutiérrez A. M., Hoffmann-Sommergruber, K., and van Ree, R.

Published
2014
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11. Airborne fungal spore monitoring: between analyst proficiency testing.

Author

Galán, C., Smith, M., Damialis, A., Frenguelli, G., Gehrig, R., Grinn-Gofroń, A., Kasprzyk, I., Magyar, D., Oteros, J., Šaulienė, I., Thibaudon, M., and Sikoparija, B.

Abstract

This study presents the results of a Europe-wide training and Quality Control (QC) exercise carried out within the framework of the European Aerobiology Society's QC Working Group. The main aim of this exercise was to examine the feasibility of carrying out a QC exercise for fungal spore monitoring in Europe, using a similar methodology to the one previously used for pollen. The QC survey was conducted in two parts: (1) Coordinators of national and regional aerobiological networks in Europe involved in the monitoring of atmospheric fungal spores were invited to complete a questionnaire survey related to their network and asked whether they were interested in taking part in an external inter-laboratory QC exercise; (2) Participating networks performed an inter-laboratory ring test with the same sample slide in order to determine the reproducibility of identifying and counting two fungal spore taxa (Alternaria and Epicoccum) in air samples collected by a Hirst-type volumetric spore trap. Participants were instructed to read five separate longitudinal transects in the "effective collecting area" of the slide. Reproducibility of analysis was determined following the method previously used in the European Aerobiology Society's QC exercises for pollen. Thirty-two counters from 16 national or regional networks in Europe participated in the QC exercise. Coefficients of Variation (CV%) ranged from 23.0 to 22.5 when reading one transect and from 14.0 to 16.0 when reading five transects for Alternaria and Epicoccum, respectively. Considering a CV% of 30 as the limit for fungal spores, no significant differences were observed between the absolute errors from two, three, four and five transects. The only significant difference was between one and five transects. We recommend that fungal spore analysis should be carried out on about 5% of the slide (two transects in this study) because results were not significantly different to five transects. [ABSTRACT FROM AUTHOR]

Published
2021
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12. Definition von Pollenexpositionszeiten für klinische Studien zur Allergen-Immuntherapie bei polleninduzierter Rhinokonjunktivitis – ein EAACI-Positionspapier

Author

Pfaar, O., primary, Bastl, K., additional, Berger, U., additional, Buters, J., additional, Calderon, M.A., additional, Clot, B., additional, Darsow, U., additional, Demoly, P., additional, Durham, S.R., additional, Gala’n, C., additional, Gehrig, R., additional, Wijk, R. Gerth van, additional, Jacobsen, L., additional, Klimek, L., additional, Sofiev, M., additional, Thibaudon, M., additional, and Bergmann, K.C., additional

Published
2018
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13. Energy Management in IORS

Author

Carey, W. R., Wissing, T. J., Gehrig, R. G., Goetz, G. W., and Larson, D. A.

Published
1972

14. Defining pollen exposure times for clinical trials of allergen immunotherapy for pollen‐induced rhinoconjunctivitis – an EAACI position paper

Author

Pfaar, O., primary, Bastl, K., additional, Berger, U., additional, Buters, J., additional, Calderon, M. A., additional, Clot, B., additional, Darsow, U., additional, Demoly, P., additional, Durham, S. R., additional, Galán, C., additional, Gehrig, R., additional, Gerth van Wijk, R., additional, Jacobsen, L., additional, Klimek, L., additional, Sofiev, M., additional, Thibaudon, M., additional, and Bergmann, K. C., additional

Published
2017
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15. Spatial and temporal variations in airborne Ambrosia pollen in Europe

Author

Sikoparija, B., primary, Skjøth, C. A., additional, Celenk, S., additional, Testoni, C., additional, Abramidze, T., additional, Alm Kübler, K., additional, Belmonte, J., additional, Berger, U., additional, Bonini, M., additional, Charalampopoulos, A., additional, Damialis, A., additional, Clot, B., additional, Dahl, Å., additional, de Weger, L. A., additional, Gehrig, R., additional, Hendrickx, M., additional, Hoebeke, L., additional, Ianovici, N., additional, Kofol Seliger, A., additional, Magyar, D., additional, Mányoki, G., additional, Milkovska, S., additional, Myszkowska, D., additional, Páldy, A., additional, Pashley, C. H., additional, Rasmussen, K., additional, Ritenberga, O., additional, Rodinkova, V., additional, Rybníček, O., additional, Shalaboda, V., additional, Šaulienė, I., additional, Ščevková, J., additional, Stjepanović, B., additional, Thibaudon, M., additional, Verstraeten, C., additional, Vokou, D., additional, Yankova, R., additional, and Smith, M., additional

Published
2016
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16. New Directions: The future of European urban air quality monitoring

Author

Kuhlbusch, T.A.J. Quincey, P. Fuller, G.W. Kelly, F. Mudway, I. Viana, M. Querol, X. Alastuey, A. Katsouyanni, K. Weijers, E. Borowiak, A. Gehrig, R. Hueglin, C. Bruckmann, P. Favez, O. Sciare, J. Hoffmann, B. EspenYttri, K. Torseth, K. Sager, U. Asbach, C. Quass, U.

Published
2014

19. The PolicyRelevance of WearEmissions fromRoad Transport,Nowand in the Future-An InternationalWorkshop Report and Consensus Statement

Author

Denier van der Gon, H.A.C., Gerlofs-Nijland, M.E., Gehrig, R., Gustafsson, M., Janssen, N., Harrison, R.M., Hulskotte, J., Johansson, C., Jozwicka, M., Keuken, M., Krijgsheld, K., Ntziachristos, L., Riediker, M., and Cassee, F.R.

Subjects
Urban Development, Earth & Environment, CAS - Climate, Air and Sustainability, Environment, Built Environment, EELS - Earth, Environmental and Life Sciences, human activities
Abstract

Road transport emissions are a major contributor to ambient particulate matter concentrations and have been associated with adverse health effects. Therefore, these emissions are targeted through increasingly stringent European emission standards. These policies succeed in reducing exhaust emissions, but do not address "nonexhaust" emissions from brake wear, tire wear, road wear, and suspension in air of road dust.Is this a problem? To what extent do nonexhaust emissions contribute to ambient concentrations of PM10 or PM2.5? In the near future, wear emissions may dominate the remaining traffic-related PM10 emissions in Europe, mostly due to the steep decrease in PM exhaust emissions. This underlines the need to determine the relevance of the wear emissions as a contribution to the existing ambient PM concentrations, and the need to assess the health risks related to wear particles, which has not yet received much attention. During a workshop in 2011, available knowledge was reported and evaluated so as to draw conclusions on the relevance of traffic-related wear emissions for air quality policy development. On the basis of available evidence, which is briefly presented in this paper, it was concluded that nonexhaust emissions and in particular suspension in air of road dust are major contributors to exceedances at street locations of the PM10 air quality standards in various European cities. Furthermore, wear-related PM emissions that contain high concentrations of metals may (despite their limited contribution to the mass of nonexhaust emissions) cause significant health risks for the population, especially those living near intensely trafficked locations. To quantify the existing health risks, targeted research is required on wear emissions, their dispersion in urban areas, population exposure, and its effects on health. Such information will be crucial for environmental policymakers as an input for discussions on the need to develop control strategies.Road transport particulate matter (PM) emissions are associated with adverse health effects. Stringent policies succeed in reducing the exhaust PM emissions, but do not address "nonexhaust" emissions from brake wear, tire wear, road wear, and suspension in air of road dust. In the near future the nonexhaust emissions will dominate the road transport PM emissions. Based on the limited available evidence, it is argued that dedicated research is required on nonexhaust emissions and dispersion to urban areas from both an air quality and a public health perspective. The implicated message to regulators and policy makers is that road transport emissions continue to be an issue for health and air quality, despite the encouraging rapid decrease of tailpipe exhaust emissions.Supplemental Materials: Supplemental materials are available for this paper. Go to the publisher's online edition of the Journal of the Air & Waste Management Association. © 2013 Copyright 2013 A&WMA.

Published
2013

21. MACC regional multi-model ensemble simulations of birch pollen dispersion in Europe

Author

Sofiev, M., primary, Berger, U., additional, Prank, M., additional, Vira, J., additional, Arteta, J., additional, Belmonte, J., additional, Bergmann, K.-C., additional, Chéroux, F., additional, Elbern, H., additional, Friese, E., additional, Galan, C., additional, Gehrig, R., additional, Khvorostyanov, D., additional, Kranenburg, R., additional, Kumar, U., additional, Marécal, V., additional, Meleux, F., additional, Menut, L., additional, Pessi, A.-M., additional, Robertson, L., additional, Ritenberga, O., additional, Rodinkova, V., additional, Saarto, A., additional, Segers, A., additional, Severova, E., additional, Sauliene, I., additional, Siljamo, P., additional, Steensen, B. M., additional, Teinemaa, E., additional, Thibaudon, M., additional, and Peuch, V.-H., additional

Published
2015
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22. Influence of the North Atlantic Oscillation on grass pollen counts in Europe

Author

Smith, M, JEAN EMBERLIN, J, Stach, A, RANTIO LEHTIMÄKI, A, Caulton, E, Thibaudon, M, Sindt, C, Jäger, S, Gehrig, R, Frenguelli, Giuseppe, Jato, V, RODRÍGUEZ RAJO, F. J., Alcázar, P, and Galán, C.

Subjects
Cluster analysis, Latitude, Phenology, North Atlantic Oscillation, Grass pollen, Aerobiology
Published
2009

23. Particle emissions of a railway line determined by detailed single particle analysis

Author

Lorenzo, Ronny, Kaegi, R., Gehrig, R., and Grobéty, Bernard

Abstract

The goal of this study was to identify and quantify particles emitted from railway traffic. For that purpose PM10 samples were collected near a busy railway line using a wind direction and speed controlled sampling equipment consisting of five devices. Measurements taken perpendicular to the railway lines at 10, 36 and 120 m distance enable an identification and separation of particles caused by the railway traffic from background particles. Morphology and chemistry of more than 11,000 particles were analysed by computer controlled scanning electron microscopy (CCSEM). Based on chemical composition five particle classes are defined and assigned to their sources. The mass of the individual particles is determined by multiplying their volumes, calculated based on their morphology with a density assigned specifically to each particle class. The density of the particle classes is derived from their chemical composition. To estimate the PM10 contributions of the railway lines, the mass of PM10 at 120 m (background, not influenced by the railway lines) is subtracted from the mass of PM10 at 10 m. The emissions of the railway lines are dominated by ‘iron’ particles, which contribute 2.9 μg m⁻³ or 67% to the railway related PM10. In addition, ‘aluminium’ and ‘calcium’ particles contribute also to the railway related PM10 (1.0 μg m⁻³ or 23% for the ‘aluminium’ and 0.4 μg m⁻³ or 10% for the ‘calcium’ particles). These particles are assigned to abrasion of the gravel bed and re-suspension of mineral dust.Long-term gravimetric results of the contribution of iron to the mass of railway related PM10 from a study performed earlier at the same site are in good agreement with the data presented in this study.

Published
2007

29. The regional aerosol-climate model REMO-HAM

Author

Pietikäinen, J.-P., primary, O'Donnell, D., additional, Teichmann, C., additional, Karstens, U., additional, Pfeifer, S., additional, Kazil, J., additional, Podzun, R., additional, Fiedler, S., additional, Kokkola, H., additional, Birmili, W., additional, O'Dowd, C., additional, Baltensperger, U., additional, Weingartner, E., additional, Gehrig, R., additional, Spindler, G., additional, Kulmala, M., additional, Feichter, J., additional, Jacob, D., additional, and Laaksonen, A., additional

Published
2012
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30. Lessons learnt from the first EMEP intensive measurement periods

Author

Aas, W., primary, Tsyro, S., additional, Bieber, E., additional, Bergström, R., additional, Ceburnis, D., additional, Ellermann, T., additional, Fagerli, H., additional, Frölich, M., additional, Gehrig, R., additional, Makkonen, U., additional, Nemitz, E., additional, Otjes, R., additional, Perez, N., additional, Perrino, C., additional, Prévôt, A. S. H., additional, Putaud, J.-P., additional, Simpson, D., additional, Spindler, G., additional, Vana, M., additional, and Yttri, K. E., additional

Published
2012
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35. Supplementary material to "Composition and sources of particulate matter in an industrialised Alpine valley"

Author

Perron, N., primary, Sandradewi, J., additional, Alfarra, M. R., additional, Lienemann, P., additional, Gehrig, R., additional, Kasper-Giebl, A., additional, Lanz, V. A., additional, Szidat, S., additional, Ruff, M., additional, Fahrni, S., additional, Wacker, L., additional, Baltensperger, U., additional, and Prévôt, A. S. H., additional

Published
2010
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37. A European aerosol phenomenology – 3: Physical and chemical characteristics of particulate matter from 60 rural, urban, and kerbside sites across Europe

Author

Putaud, J.-P., primary, Van Dingenen, R., additional, Alastuey, A., additional, Bauer, H., additional, Birmili, W., additional, Cyrys, J., additional, Flentje, H., additional, Fuzzi, S., additional, Gehrig, R., additional, Hansson, H.C., additional, Harrison, R.M., additional, Herrmann, H., additional, Hitzenberger, R., additional, Hüglin, C., additional, Jones, A.M., additional, Kasper-Giebl, A., additional, Kiss, G., additional, Kousa, A., additional, Kuhlbusch, T.A.J., additional, Löschau, G., additional, Maenhaut, W., additional, Molnar, A., additional, Moreno, T., additional, Pekkanen, J., additional, Perrino, C., additional, Pitz, M., additional, Puxbaum, H., additional, Querol, X., additional, Rodriguez, S., additional, Salma, I., additional, Schwarz, J., additional, Smolik, J., additional, Schneider, J., additional, Spindler, G., additional, ten Brink, H., additional, Tursic, J., additional, Viana, M., additional, Wiedensohler, A., additional, and Raes, F., additional

Published
2010
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