High post-season Alnus pollen loads successfully identified as long-range transport of an alpine species.
Atmos. Environ. 231:117453 (2020)
Alnus pollen is one of the Northern Hemisphere's major aeroallergens. In Central Europe, the genus is represented by three species (Alnus glutinosa, Alnus incana, and Alnus viridis). The most common one, A. glutinosa (L.) Gaertn., is widespread in lowland riparian forests, swamps, and forest edges. However, to date is still unknown if all of them - in terms of pollen exposure - are clinically relevant for sensitized individuals. To investigate the associated pollen exposure, particularly also because of long-range transport of airborne pollen, we used backward air mass trajectories and tested this method for the year 2015, based on daily /thus pollen concentrations at 26 sites in Bavaria, Germany. A. glutinosa's main pollen season extends from February to March, but a six-day, post-season episode was additionally identified in June. For this episode and all sites, 72-h backward trajectories were calculated at 3-h intervals using high spatial and temporal resolution ERAS reanalysis data and the HYS-PLIT (hybrid single-particle Lagrangian integrated trajectory) model. This backward trajectory method identified air masses from the alpine region in Switzerland and Austria, where relevant areas of A. viridis (Chaix) DC as potential pollen sources exist. These may explain the post-season episode in June, as additionally confirmed by its unique spatial distribution, by a considerably later flowering period, and by repeated long-range transport events as observed in a 23-year pollen time series.
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Artikel: Journalartikel
Dokumenttyp
Wissenschaftlicher Artikel
Typ der Hochschulschrift
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Schlagwörter
Pollen ; Alnus ; Green Alder ; Backward Air Mass Trajectories ; Hysplit ; Off-season; Airborne Pollen; Distance Transport; Ambrosia Pollen; Birch Pollen; Hay-fever; Land-use; Poland; Impact; Valley; Dispersion
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Sprache
englisch
Veröffentlichungsjahr
2020
Prepublished im Jahr
HGF-Berichtsjahr
2020
ISSN (print) / ISBN
1352-2310
e-ISSN
1873-2844
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Band: 231,
Heft: ,
Seiten: ,
Artikelnummer: 117453
Supplement: ,
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Verlag
Elsevier
Verlagsort
The Boulevard, Langford Lane, Kidlington, Oxford Ox5 1gb, England
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0000-00-00
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Gutachter
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0000-00-00
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0000-00-00
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weitere Inhaber
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Begutachtungsstatus
Peer reviewed
POF Topic(s)
30202 - Environmental Health
Forschungsfeld(er)
Allergy
PSP-Element(e)
G-505400-001
G-503400-001
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Copyright
Erfassungsdatum
2020-06-04