2026-06-27T15:19:41Zhttps://docta.ucm.es/rest/oai/request
oai:docta.ucm.es:20.500.14352/68002023-07-13T06:23:42Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense author Rojo Ubeda, Jesús author Moreno, José María author Romero-Morte, Jorge author Lara, Beatriz author Elvira-Rendueles, Belén author Negral, Luis author Fernández González, Federico author Pérez Badia, Rosa author Moreno-Grau, Stella 2023-06-17T08:22:10Z 2023-06-17T08:22:10Z 2021-05-22 0269-7491 10.1016/j.envpol.2021.117441 https://hdl.handle.net/20.500.14352/6800 https://doi.org/10.1016/j.envpol.2021.117441 http://www.journals.elsevier.com/environmental-pollution/ Airborne particulate matter such as mineral dust comes mainly from natural sources, and the African regions of Sahara and Sahel originate large amounts of the aerosols dispersed worldwide. There is little knowledge about the influence of dust episodes on airborne pollen concentrations, and although the centre and southeast of the Iberian Peninsula are frequently affected by dust intrusions, until now, no specific works have analysed the effect of these episodes on airborne pollen concentrations in these areas. The aims of this study were to analyse the simultaneous occurrence of airborne pollen peaks and Saharan-Sahel dust intrusions in the central and south-eastern Iberian Peninsula, and to study the weather conditions – air mass pathways and conditions of air temperature, relative humidity and atmospheric pressure – that influence the airborne pollen concentrations during dust episodes. The results showed that the rise in airborne pollen concentrations during dust episodes is apparent in inland Iberian areas, although not in coastal areas in the southeast where pollen concentrations are even observed to decrease, coinciding with prevailing easterly winds from the sea. Total pollen concentrations and specific pollen types such as Olea, Poaceae and Quercus showed an increase in the central Iberian Peninsula during dust episodes when two meteorological phenomena concur: 1) prevailing winds from extensive areas of major wind-pollinated pollen sources over a medium or short distance (mainly from western and southwestern areas); and 2) optimal meteorological conditions that favour pollen release and dispersal into the atmosphere (mainly high temperatures and subsequently low humidity in central areas). Both conditions often occur during the Saharan-Sahel dust intrusions in the centre. Maximum pollen peaks are therefore most likely to occur during dust episodes in the central Iberian Peninsula, thus dramatically increasing the risk of outbreaks of pollinosis and other respiratory diseases in the population. eng Atribución-NoComercial-SinDerivadas 3.0 España Causes of increased pollen exposure during Saharan-Sahel dust intrusions journal article URL https://docta.ucm.es/bitstreams/2d85a4c2-bdb1-413f-85da-6ea9e5a7afc3/download File MD5 90dce5150dc54efff70b75ac321e3134 14807455 application/pdf 1-s2.0-S026974912101023X-main.pdf URL https://docta.ucm.es/bitstreams/c52127e8-5cb5-4914-a167-184d2ff4a654/download File MD5 0d050116fc19366703efb5445de42d08 81551 text/plain 1-s2.0-S026974912101023X-main.pdf.txt