Identification of potential sources of airborne Olea pollen in the Southwest Iberian Peninsula

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This study aims to determine the potential origin of Olea pollen recorded in Badajoz in the Southwest of the Iberian Peninsula during 2009-2011. This was achieved using a combination of daily average and diurnal (hourly) airborne Olea pollen counts recorded at Badajoz (south-western Spain) and A parts per thousand vora (south-eastern Portugal), an inventory of olive groves in the studied area and air mass trajectory calculations computed using the HYSPLIT model. Examining olive pollen episodes at Badajoz that had distinctly different diurnal cycles in olive pollen in relation to the mean, allowed us to identify three different scenarios where olive pollen can be transported to the city from either distant or nearby sources during conditions with slow air mass movements. Back trajectory analysis showed that olive pollen can be transported to Badajoz from the West on prevailing winds, either directly or on slow moving air masses, and from high densities of olive groves situated to the Southeast (e.g. Andalucia). Regional scale transport of olive pollen can result in increased nighttime concentrations of this important aeroallergen. This could be particularly important in Mediterranean countries where people can be outdoors during this time due to climate and lifestyle. Such studies that examine sources and the atmospheric transport of pollen are valuable for allergy sufferers and health care professionals because the information can be incorporated into forecasts, the outputs of which are used for avoiding exposure to aeroallergens and planning medication. The results of studies of this nature can also be used for examining gene flow in this important agricultural crop.


  • Santiago Fernandez-Rodriguez
  • Carsten Skjoth
  • Rafael Tormo-Molina
  • Rui Brandao
  • Elsa Caeiro
  • Inmaculada Silva-Palacios
  • Angela Gonzalo-Garijo
  • Matt Smith
Enheter & grupper

Ämnesklassifikation (UKÄ) – OBLIGATORISK

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Sidor (från-till)337-348
TidskriftInternational Journal of Biometeorology
StatusPublished - 2014
Peer review utfördJa