Journal
AEROBIOLOGIA
Volume 33, Issue 3, Pages 315-326Publisher
SPRINGER
DOI: 10.1007/s10453-017-9471-9
Keywords
Ambrosia artemisiifolia; Aeroallergens; Back trajectory analysis; HYSPLIT
Categories
Funding
- EU COST Action [FA1203]
- EU European Social Fund
- Operational Programme Human Capital
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We have investigated the relationship between the inflow of air masses and the ragweed pollen concentration in SW Poland (Wrocaw) for a 10-year period of 2005-2014. The HYSPLIT trajectory model was used to verify whether episodes of high concentrations can be related to regions outside of the main known ragweed centres in Europe, like Pannonian Plain, northern Italy and Ukraine. Furthermore, we used two different meteorological data sets (the global GDAS data set and from the WRF mesoscale model; the meteorological parameters were: U and V wind components, temperature and relative humidity) into HYSPLIT to evaluate the influence of meteorological input on calculated trajectories for high concentration ragweed episodes. The results show that the episodes of high pollen concentration (above 20 pm(-3)) represent a great part of total recorded ragweed pollen in Wrocaw, but occur rarely and not in all years. High pollen episodes are connected with air masses coming from south and south-west Europe, which confirms the existence of expected ragweed centres but showed that other centres near Wrocaw are not present. The HYSPLIT simulations with two different meteorological inputs indicated that footprint studies on ragweed benefit from a higher resolution meteorological data sets.
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