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New insights into the 2021 La Palma eruption degassing processes from direct-sun spectroscopic measurements
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dc.contributor.authorTaquet, Noémiees_ES
dc.contributor.authorBoulesteix, Thomases_ES
dc.contributor.authorGarcía Rodríguez, Omaira Elenaes_ES
dc.contributor.authorCampion, Robines_ES
dc.contributor.authorStremme, Wolfganges_ES
dc.contributor.authorRodríguez González, Sergioes_ES
dc.contributor.authorLópez-Darias, Jessicaes_ES
dc.contributor.authorMarrero, Carloses_ES
dc.contributor.authorGonzález García, Diegoes_ES
dc.contributor.authorKlügel, Andreases_ES
dc.contributor.authorHase, Frankes_ES
dc.contributor.authorGarcía, María Isabeles_ES
dc.contributor.authorRamos López, Ramónes_ES
dc.contributor.authorRivas Soriano, Pedro Pabloes_ES
dc.contributor.authorLeón-Luis, Sergio Fabiánes_ES
dc.contributor.authorCarreño Corbella, Virgilioes_ES
dc.contributor.authorAlcántara, Antonioes_ES
dc.contributor.authorSepúlveda Hernández, Eliezeres_ES
dc.contributor.authorMilford, Celiaes_ES
dc.contributor.authorGonzález-Sicilia, Pabloes_ES
dc.contributor.authorTorres, Carloses_ES
dc.date.accessioned2025-04-21T07:26:44Z-
dc.date.available2025-04-21T07:26:44Z-
dc.date.issued2025-
dc.identifier.citationEGUsphere. [Preprint] 2025, 1092es_ES
dc.identifier.urihttp://hdl.handle.net/20.500.11765/16673-
dc.description.abstractDuring the 2021 La Palma eruption, both existing and newly deployed air quality and atmospheric monitoring networks in the Canary Islands (Spain) played a crucial role in supporting decision-making for public safety and enhancing the understanding of the crisis. In this study, we report direct-sun measurements using low (EM27/SUN) and high (IFS-125HR) spectral resolution Fourier Transform InfraRed (FTIR) spectrometers located up to ~140 km away from the volcano and contributing to key atmospheric global networks. In La Palma, the EM27/SUN was combined with a Differential Optical Absorption Spectroscopy (DOAS) instrument. We present new FTIR retrieval methods to derive the SO2, CO2, CO, HF, HCl relative abundance in the volcanic plume from both low- and high- resolution solar absorption spectra. We derived SO2 volcanic emission fluxes from the Sentinel-5P TROPOspheric Monitoring Instrument (TROPOMI) and estimated the emission fluxes of the other volcanic species over the whole eruption. We estimate the volcanic emission to the atmosphere for SO2, CO2, HCl, HF and CO to be 1.8±0.2 Mt, 19.4±1.8 Mt, 0.05±0.01 Mt, 0.013±0.002 Mt and 0.123±0.005 Mt, respectively. We show a good agreement between these estimates and the degassing balance derived from a petrologic approach. This eruption produced emissions that compare directly with annual anthropogenic emissions at different spatial scales. This study demonstrates the feasibility of using existing atmospheric FTIR and DOAS global networks to monitor volcanic plumes composition more than 100 km away, and is of relevance for volcanological monitoring and research during volcanic crises.es_ES
dc.description.sponsorshipThis study was partially funded by the European Union – NextGenerationEU within the actions P02.C05.I03.P51.S000.42 and P02.C05.I03.P51.S000.43. This study is part of the projects AERO-EXTREME (PID2021-125669NB-I00), funded by the Spanish National Research Agency (Agencia Estatal de Investigación) and the European Regional Development Funds. This study has received funding from the European Union’s Horizon Europe Research and Innovation programme under Grant Agreement 101189654. DGG acknowledges financial support from the Alexander von Humboldt Foundation through a Humboldt Fellowship for Postdoctoral Researchers. This work benefited from funding from CSIC and the Ministry of Science and Innovation through the CSIC-PIE project PIE20223PAL009. The aerosol sampling in La Palma during the eruption and part of the chemical analysis were performed within the framework of the project CSIC-LAPALMA-06, funded by CSIC and the Ministry of Science and Innovation.es_ES
dc.language.isoenges_ES
dc.publisherEuropean Geosciences Uniones_ES
dc.publisherCopernicus Publicationses_ES
dc.rightsLicencia CC: Reconocimiento CC BYes_ES
dc.subjectVolcanic eruptiones_ES
dc.subjectAir qualityes_ES
dc.subjectAtmospheric monitoring networkses_ES
dc.subjectVolcanic plumeses_ES
dc.subjectVolcanic emission fluxeses_ES
dc.titleNew insights into the 2021 La Palma eruption degassing processes from direct-sun spectroscopic measurementses_ES
dc.typeinfo:eu-repo/semantics/articlees_ES
dc.relation.publisherversionhttps://doi.org/10.5194/egusphere-2025-1092es_ES
dc.rights.accessRightsinfo:eu-repo/semantics/openAccesses_ES
Colecciones: Artículos científicos 2023-2026




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