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Modelling Atmospheric Concentrations of Ragweed Pollen From Local and Distant Sources

Šikoparija, B. and Thibaudon, M. and Sommer, J. and Smith, Matt and Grewling, Ł. and Skjøth, C. (2014) Modelling Atmospheric Concentrations of Ragweed Pollen From Local and Distant Sources. In: DUST 2014: International Conference on Atmospheric Dust, 1st - 6th June 2014, Italy. (Unpublished)

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Abstract

Pollen grains from the genus ragweed (Ambrosia spp.) are important aeroallergens. In Europe, the largest sources of atmospheric ragweed pollen are the Rhône Valley (France), parts of Northern Italy, the Pannonian Plain and Ukraine. Episodes of Long Distance Transport (LDT) of ragweed pollen from these centres can cover large parts of Europe and are predominantly studied using receptor based models (Smith et al., (2013) and references therein). The clinical impact of allergenic ragweed pollen arriving from distant sources remains unclear (Cecchi et al. 2010). Although a recent study has found the major allergens of ragweed in air samples collected in Poznań, Poland, during episodes of long-distance transport from the Pannonian Plain (Grewling et al. 2013). The source orientated models SILAM, DEHM, COSMO-Art, METRAS and ENVIRO-HIRLAM currently report having the capability of modelling atmospheric concentrations of pollen in Europe. The performance of such source-orientated models is strongly dependent on the quality of the emissions data, which is a focus of current research (e.g. Thibaudon et al. (2014)). The output from these models are important for warning allergy sufferers in areas polluted by ragweed, but could also be used to warn the public of ragweed pollen being transported into areas where the plant is not abundant. Areas outside of the main areas of ragweed infection that contain considerable local populations must, however, also include local scale models. These models can be used to predict local concentrations, even when LDT is not present. This concept of combined LDT and local scale calculations has been shown to be work for air pollutants and is considered usable for urban scale calculations of aeroallergens once urban scale maps of aeroallergen sources have been produced.

Item Type: Conference or Workshop Item (Speech)
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Originally deposited as National Pollen and Aerobiology Research Unit (NPARU)

Uncontrolled Keywords: Ragweed pollen, Ambrosia pollen, modelling, atmospheric concentrations, aeroallergens, Long Distance Transport, air pollutants, dust
Subjects: Q Science > Q Science (General)
Divisions: Academic Departments > Institute of Science and the Environment
Depositing User: Carsten Skjoth
Date Deposited: 13 Jun 2014 08:25
Last Modified: 04 Jan 2017 11:36
URI: https://eprints.worc.ac.uk/id/eprint/3120

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