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| Titel |
Seasonal variation in diurnal atmospheric grass pollen concentration profiles |
| VerfasserIn |
R. G. Peel, P. V. Ørby, C. A. Skjøth, R. Kennedy, V. Schlünssen, M. Smith, J. Sommer, O. Hertel |
| Medientyp |
Artikel
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| Sprache |
Englisch
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| ISSN |
1726-4170
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| Digitales Dokument |
URL |
| Erschienen |
In: Biogeosciences ; 11, no. 3 ; Nr. 11, no. 3 (2014-02-11), S.821-832 |
| Datensatznummer |
250117198
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| Publikation (Nr.) |
 copernicus.org/bg-11-821-2014.pdf |
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| Zusammenfassung |
| In this study, the diurnal atmospheric grass pollen concentration profile
within the Danish city of Aarhus was shown to change in a systematic manner
as the pollen season progressed. Although diurnal grass pollen profiles can
differ greatly from day-to-day, it is common practice to establish the time
of day when peak concentrations are most likely to occur using
seasonally averaged diurnal profiles. Atmospheric pollen loads are highly
dependent upon emissions, and different species of grass are known to flower
and emit pollen at different times of the day and during different periods of
the pollen season. Pollen concentrations are also influenced by
meteorological factors – directly through those parameters that govern
pollen dispersion and transport, and indirectly through the weather-driven
flowering process. We found that three different profiles dominated the grass
pollen season in Aarhus – a twin peak profile during the early season, a
single evening profile during the middle of the season, and a single midday peak during
the late season. Whilst this variation could not be explained by
meteorological factors, no inconsistencies were found with the theory that
it was driven by a succession of different grass species with
different diurnal flowering patterns dominating atmospheric pollen loads as
the season progressed. The potential for exposure was found to be
significantly greater during the late-season period than during either the
early- or mid-season periods. |
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