Aerobiologia

, 23:171 | Cite as

Elevated birch pollen episodes in Denmark: contributions from remote sources

  • Alexander G. Mahura
  • Ulrik S. Korsholm
  • Alexander A. Baklanov
  • Alix Rasmussen
Original Paper

Abstract

The purpose of this study was to investigate the relationship between possible long-distance transport of birch pollen and episodes of elevated concentration in Denmark. By analysis of a twenty-six year (1980–2006) time-series of bi-hourly birch pollen counts from two sites (Copenhagen and Viborg) episodes of elevated counts (more than 100 grains) were identified in fewer than 2% of cases. Trajectory analysis showed that such episodes are primarily associated with long-distance transport from Eastern Europe and Scandinavia (43 and 33% of events, respectively); the lowest contribution originated from the British Isles. Long-term episodes (as in 1993 and 2006) occurred when atmospheric conditions favored long-distance transport from several source regions in succession.

Keywords

Birch pollen Elevated concentration episode Source region Trajectory modeling 

References

  1. Comtois, P. (1998). Time and space determinants in aerobiology. In Abstracts of the 6th International Congress on Aerobiology, 18–23, Perugia, Italy.Google Scholar
  2. Chenevez, J., Baklanov, A., & Sørensen, J. H. (2004). Pollutant transport schemes integrated in a numerical weather prediction model: Model description and verification results. Meteorological Applications, 11, 265–275.CrossRefGoogle Scholar
  3. D’Odorico, P., Yoo, J. C., & Jaeger, S. (2002). Changing seasons: An effect of the north Atlantic Oscillation? Journal of Climate, 15(4), 435–445.CrossRefGoogle Scholar
  4. Draxler , R. R. & Rolph, G. D. (2003). HYSPLIT (HYbrid Single-Particle Lagrangian Integrated Trajectory) Model access via NOAA ARL READY Website (http://www.arl.noaa.gov/ready/hysplit4.html). NOAA Air Resources Laboratory, Silver Spring, MD.
  5. Emberlin, J. (1994). The effects of patterns in climate and pollen abundance on allergy. Allergy, 49, 15–20.CrossRefGoogle Scholar
  6. Frei, T. (1998). The effects of climate change in Switzerland 1969–1996 on airborne pollen quantities from hazel, birch and grass. Grana, 37, 172–179.Google Scholar
  7. Kapyla, M., & Pentinen, A. (1981). An evaluation of microscopical counting methods of the tape in Hirst-Burkard pollen and spore traps. Grana, 20, 131–141.CrossRefGoogle Scholar
  8. Menzel, A. (2000). Trends in phonological phases in Europe between 1951–1996. International Journal of Biometeorology, 44, 76–81.CrossRefGoogle Scholar
  9. OECD (2003). Consensus document on the biology of European white birch (Betula pendula Roth). Report Organization for Economic Co-operation and Development (OECD); Environment, Health and Safety Publications, Series on Harmonization of Regulatory Oversight in Biotechnology, N 28, 45 p.Google Scholar
  10. Rasmussen, A. (2002). The effects of climate change on the birch pollen season in Denmark. Aerobiologia, 18, 253–265.CrossRefGoogle Scholar
  11. Rolph, G. D. (2003). Real-time environmental applications and display system (READY) Website (http://www.arl.noaa.gov/ready/hysplit4.html). NOAA Air Resources Laboratory, Silver Spring, MD.
  12. Sofiev, M., Siljamo, P., Ranta, H., & Rantio-Lehtimaki, A. (2006). Towards numerical forecasting of long-range air transport of birch pollen: Theoretical considerations and a feasibility study. International Journal of Biometeorology, 50(6), 392–402.CrossRefGoogle Scholar
  13. Spieksma, F., Corden, J. M., Detandt, M., Millington, W. M., Nikkels, H., Nolard, N., Schoenmakers, C., Wachter, R., de Weger, L. A., Willems, R., & Emberlin J. (2003). Quantitative trends in annual totals of five common airborne pollen types (betula, quercus, poaceae, urtica and artmisia), at five pollen-monitoring stations in western Europe. Aerobiologica, 19, 171–184.CrossRefGoogle Scholar
  14. Viander, M., & Koivikko, A. (1978). The seasonal symptoms of hyposensitized and untreated hay fever patients in relation to birch pollen counts: Correlations with nasal sensitivity, prick tests and RAST. Clinical Allergy, 8, 387–396.CrossRefGoogle Scholar
  15. WHO (2003). Phenology and health: Allergic disorders. Report World Health Organization, WHO Meeting, Rome, Italy, 16–17 Jan 2003, 49 p.Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2007

Authors and Affiliations

  • Alexander G. Mahura
    • 1
  • Ulrik S. Korsholm
    • 1
  • Alexander A. Baklanov
    • 1
  • Alix Rasmussen
    • 1
  1. 1.Research and Development DepartmentDanish Meteorological InstituteCopenhagenDenmark

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