Zoekresultaten - 18 results
What drives the long-term changes in airborne birch and grass pollen levels in Belgium?
Birch Pollen: — A strong increase in birch pollen concentrations was observed, associated with increasing radiation, decreasing precipitation, and decreasing wind speed near the surface. — Inter-seasonal ...
Analyzing the airborne birch and grass pollen monitoring network in Belgium
enhanced by assimilating pollen observations from strategically well-placed monitoring stations. Before assimilating observations into forecasting models, the network quality and coverage of pollen ...
Estimating the Uncertainty in Airborne Birch Pollen Modelling
SILAM and quantified as the CV % is more than 50%. It is the same order of magnitude as the reported errors from observed pollen counts using Hirst-type devices at monitoring stations. Health Topics: ...
First European pollen reanalysis for allergenic trees
assimilation of in-situ pollen observations of European Aeroallergen Network (EAN) in 34 countries. In the extended 4-dimensional variational data assimilation procedure, the total seasonal pollen emission ...
Impact of environmental nitrogen enrichment on birch pollen allergy
Speybroeck N; Linard C; Dendoncker N; Ceulemans T; Nicolas Bruffaerts; Raf Aerts; Schrijvers R Source: World Aerobiology Conference 2024, University of Vilnius, Vilnius, Lithuania (2024) Keywords: pollen ...
The search for the best airborne pollen monitoring locations
forthcoming pollen episodes derived from early warning systems. These systems can substantially be improved when pollen observations from strategically well-chosen pollen monitoring stations are assimilated. ...
Effects of tree pollen on throughfall element fluxes in European forests
which are part of the ICP Forests Level II network. The SPI n for the dominant tree genus was observed at 56 aerobiological monitoring stations in nearby cities. The net contribution of pollen was ...
Long-Term Pollen Monitoring in the Benelux: Evaluation of Allergenic Pollen Levels and Temporal Variations of Pollen Seasons
locations. The dynamics in the observed trends can impact allergic patients by increasing the severity of symptoms, upsetting the habit of timing of the season, complicating diagnosis due to overlapping pollen ...
Residential green space and medication sales for childhood asthma: A longitudinal ecological study in Belgium
of grassland and garden were observed (unadjusted parameter estimates per IQR increase of relative cover, range across four strata: grassland, β = 0.15–0.17; garden, β = 0.13–0.17). The associations ...
Spatio-temporal monitoring and modelling of birch pollen levels in Belgium
Catherine Linard; Marijke Hendrickx; Sofiev, Mikhail; Andy W. Delcloo Source: Aerobiologia (2019) Keywords: Birch fraction maps Birch pollen Pollen observations SILAM model Time series Abstract: In Belgium, ...