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dc.contributor.authorAlarcón, Marta
dc.contributor.authorDe Linares Fernández, Concepción
dc.identifier.citationMarta Alarcón... [et al.]. Potential contribution of distant sources to airborne Betula pollen levels in Northeastern Iberian Peninsula, Science of The Total Environment, Volume 818, 2022, 151827, ISSN 0048-9697, []es_ES
dc.descriptionWe acknowledge the financial support of the European Commission for ENV4-CT98-0755; the Spanish Government for CGL2004-21166-E, CGL2005-07543/CLI, CGL2009-11205, CGL2012-39523-C02-01/CLI, CGL2012-39523-C02-02, CGL2016-75996-R, CTM2017-89565-C2-1, CTM2017-89565-C2-2, and CSD 2007-00067; the Catalan Government for 2005SGR00519, 2009SGR1102, and 2017SGR1692; Diputacio de Tarragona; Servei Meteorologic de Catalunya; Sociedad Espanola de Alergologia e Inmunologia Clinica (SEAIC); Laboratorios LETI PHARMA; Societat Catalana d'Allergia i Immunologia Clinica (SCAIC); J Uriach y Compania; S.A. This research contributes to the Maria de Maeztu Programme for Units of Excellence of the Spanish Ministry of Science and Innovation (CEX2019-000940-M). The authors gratefully acknowledge the NOAA Air Resources Laboratory (ARL) for their HYSPLIT transport and dispersion model and the synoptic charts used in this publication.es_ES
dc.description.abstractBetula (birch) pollen is one of the most important causes of respiratory allergy in Northern and Central Europe. While birch trees are abundant in Central, Northern, and Eastern Europe, they are scarce in the Mediterranean territories, especially in the Iberian Peninsula (IP), where they grow only in the northern regions and as ornamental trees in urban areas. However, the airborne birch pollen patterns in Catalonia (Northeastern IP) show abrupt high concentrations in areas with usually low local influence. The intensity of the derived health problems can be increased by outbreaks due to long-range pollen transport. The present work evaluates the different potential contributions to Catalonia from the main source regions: Pyrenees, Cantabria, and the forests of France and Central Europe. To this end, we computed the Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) back trajectories of air masses associated with the main Betula pollen peaks occurring simultaneously over different Catalan monitoring stations, and we studied their provenance over a 15-year period. The Vielha aerobiological station on the northern slopes of the Central Pyrenees was used to identify the dates of the pollen season in the Pyrenean region. In order to better understand the role of the Pyrenees, which is the nearest of the four birch forested regions, we classified the pollen peaks in the other Catalan stations into three groups based on the relationship between the peak and the pollen season in the Pyrenees. Our analysis of back-trajectory residence time, combined with the associated pollen concentration, reveals that two principal routes other than the Pyrenean forest sustain the northerly fluxes that enter Catalonia and carry significant concentrations of Betula pollen. This study has also allowed quantifying the differentiated contributions of the potential source regions. In addition, theWeather Research Forecast (WRF) mesoscale model has been used to study three specific episodes. Both models, HYSPLIT and WRF, complement each other and have allowed for better understanding of the main mechanisms governing the entry of birch pollen to the region.es_ES
dc.description.sponsorshipEuropean Commission European Commission Joint Research Centre ENV4-CT98-0755es_ES
dc.description.sponsorshipSpanish Governmentes_ES
dc.description.sponsorshipEuropean Commission CGL2004-21166-E CGL2005-07543/CLI CGL2009-11205 CGL2012-39523-C02-01/CLI CGL2012-39523-C02-02 CGL2016-75996-R CTM2017-89565-C2-1 CTM2017-89565-C2-2 CSD 2007-00067es_ES
dc.description.sponsorshipDiputacio de Tarragonaes_ES
dc.description.sponsorshipSociedad Espanola de Alergologia e Inmunologia Clinica (SEAIC)es_ES
dc.description.sponsorshipLaboratorios LETI PHARMAes_ES
dc.description.sponsorshipSocietat Catalana d'Allergia i Immunologia Clinica (SCAIC)es_ES
dc.description.sponsorshipJ Uriach y Companiaes_ES
dc.description.sponsorshipMaria de Maeztu Programme for Units of Excellence of the Spanish Ministry of Science and Innovation CEX2019-000940-Mes_ES
dc.description.sponsorshipCatalan Government 2005SGR00519 2009SGR1102 2017SGR1692es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.subjectPollen concentration peak and seasones_ES
dc.subjectSource regionses_ES
dc.subjectMesoscale and Lagrangian modelses_ES
dc.subjectRole of long-range transportes_ES
dc.titlePotential contribution of distant sources to airborne Betula pollen levels in Northeastern Iberian Peninsulaes_ES

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Atribución-NoComercial-SinDerivadas 3.0 España
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