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Pàgina inicial > Articles > Articles publicats > Projections of the start of the airborne pollen season in Barcelona (NE Iberian Peninsula) over the 21st century |
Data: | 2024 |
Descripció: | 15 pàg. |
Resum: | The effects of global warming are numerous and recent studies reveal that they can affect the timing of pollination. Temperature is the meteorological variable that presents a clearer relationship with the start of the pollination season of most of the observed airborne pollen taxa. In Catalonia, in the last fifty years, the average annual air temperature has increased by +0. 23 °C/decade, and the local warming has been slightly higher than the one on a global scale. Projections point to an increase in temperature in the coming decades, which would be more marked towards the middle of the century. To analyse the effect of the increase in temperature due to global warming on the starting date of pollen season in Barcelona, a forecasting model has been applied to a set of projected future temperatures estimated by the European RESCCUE project. This model, largely used in the literature, is based on determining the thermal needs of the plant for the pollen season to begin. The model calibration to obtain the initial parameters has been made by using 20 years of pollen data (2000-2019), and the model effectiveness has subsequently been tested through an internal evaluation over the period of the calibration and an external evaluation on 4 years not included in the calibration (2020−2023). The mean bias error in the internal calibration ranged between −0. 4 and − 0. 6 days, and between +0. 5 and − 8. 3 in the external one, depending on the taxon. The results of the application of the model to the temperature projections over the 21st century point to a progressive advancement in the pollination dates of several pollen types abundant in the city, allergenic most of them. These advances ranged, at the end of the century, between 15 and 27 days, depending on the climate model, for the scenario of the highest concentrations (RCP8. 5) and between 7 and 12 days for the emissions stabilization scenario (RCP4. 5). |
Ajuts: | Agencia Estatal de Investigación PID2020-117873RB-I00 Agencia Estatal de Investigación CTM2017-89565-C2-1-P Agencia Estatal de Investigación CTM2017-89565-C2-2 Ministerio de Economía y Competitividad CGL2016-75996-R Ministerio de Economía y Competitividad CGL2012-39523-C02-01/CLI Ministerio de Economía y Competitividad CGL2012-39523-C02-01 Ministerio de Economía y Competitividad CGL2012-39523-C02-02 Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1274 Agència de Gestió d'Ajuts Universitaris i de Recerca 2009/SGR-1102 Agència de Gestió d'Ajuts Universitaris i de Recerca 2005/SGR-00519 Agència de Gestió d'Ajuts Universitaris i de Recerca 2002/SGR-00059 Ministerio de Ciencia e Innovación CEX2019-000940-M |
Nota: | Unidad de excelencia María de Maeztu CEX2019-000940-M |
Nota: | The Spanish Government for AMB97-0457-CO7-021, REN2001-10659-CO3-01, CGL2004-21166-E, CGL2005-07543/CLI, CGL2009-11205 |
Drets: | Aquest document està subjecte a una llicència d'ús Creative Commons. Es permet la reproducció total o parcial, la distribució, i la comunicació pública de l'obra, sempre que no sigui amb finalitats comercials, i sempre que es reconegui l'autoria de l'obra original. No es permet la creació d'obres derivades. |
Llengua: | Anglès |
Document: | Article ; recerca ; Versió publicada |
Matèria: | Allergenic pollen ; Climate change ; Forecast ; Pollen prediction ; Start pollination ; Temperature projections ; SDG 13 - Climate Action |
Publicat a: | Science of the total environment, Vol. 937 (August 2024) , art. 173363, ISSN 1879-1026 |
15 p, 7.2 MB |