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Drivers of extreme burnt area in Portugal: fire weather and vegetation

2022-12Artigo científico Acesso aberto
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dc.contributor.authorMenezes, Tomás
dc.contributor.authorBenali, Akli
dc.contributor.authorPereira, Mário Gonzalez
dc.contributor.authorSilva, João M. N.
dc.contributor.authorNunes, João Pedro
dc.date.accessioned2022-12-20T15:00:39Z
dc.date.available2022-12-20T15:00:39Z
dc.date.issued2022-12
dc.description.abstractFire weather indices are used to assess the effect of weather on wildfire behaviour and to support fire management. Previous studies identified the high daily severity rating percentile (DSRp) as being strongly related to the total burnt area (BA) in Portugal, but it is still poorly understood how this knowledge can support fire management at a smaller spatial scale. The aims of this study were to (1) assess whether the 90th DSRp (DSR90p) threshold is adequate for estimating most of the BA in mainland Portugal; (2) analyse the spatial variability of the DSRp threshold that explains a large part of BA, at higher resolution; and, (3) analyse whether vegetation cover can justify the DSRp spatial variability. We used weather reanalysis data from ERA5-Land, wildfire and land use data from Portuguese land management departments for an extended summer period (15 May to 31 October) from 2001 to 2019. We computed and related DSRp to large wildfires (BA > 100 ha) and land use to clarify the effectiveness of the DSRp for estimating BA in Portugal and assess how vegetation influences it. Results revealed that the DSR90p is an adequate indicator of extreme fire weather days and BA in Portugal. In addition, the spatial pattern of the DSRp associated with most of the total BA shows variability at the municipality scale. Municipalities where large wildfires occur with more extreme weather conditions have most of the BAs in forests and are in coastal areas. By contrast, municipalities where large wild fires occur with less extreme weather conditions are predominantly covered by shrublands and are situated in eastern and inland regions. These findings are a novelty for fire science in Portugal and should be considered by fire managers and fire risk assessors.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationCalheiros, T., Benali, A., Pereira, M., Silva, J., and Nunes, J.: Drivers of extreme burnt area in Portugal: fire weather and vegetation, Nat. Hazards Earth Syst. Sci., 22, 4019–4037, https://doi.org/10.5194/nhess-22-4019-2022, 2022pt_PT
dc.identifier.doi10.5194/nhess-22-4019-2022pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/55463
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherEGUpt_PT
dc.relationA designar
dc.relationSCONEFIRE: Stream Contamination by Forest Fires – pathways, impacts on water resources, and future vulnerability
dc.relationFRISCO: managing Fire-induced RISks of water quality Contamination
dc.relationCentre for Ecology, Evolution and Environmental Changes
dc.relationCentre for the Research and Technology of Agro-Environmental and Biological Sciences
dc.relationForest Research Centre
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.titleDrivers of extreme burnt area in Portugal: fire weather and vegetationpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleA designar
oaire.awardTitleSCONEFIRE: Stream Contamination by Forest Fires – pathways, impacts on water resources, and future vulnerability
oaire.awardTitleFRISCO: managing Fire-induced RISks of water quality Contamination
oaire.awardTitleCentre for Ecology, Evolution and Environmental Changes
oaire.awardTitleCentre for the Research and Technology of Agro-Environmental and Biological Sciences
oaire.awardTitleForest Research Centre
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/OE/PD%2FBD%2F128173%2F2016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/Investigador FCT/IF%2F00586%2F2015%2FCP1276%2FCT0016/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PCIF%2FMPG%2F0044%2F2018/PT
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oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F04033%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00239%2F2020/PT
oaire.citation.endPage4037pt_PT
oaire.citation.issue12pt_PT
oaire.citation.startPage4019pt_PT
oaire.citation.titleNatural Hazards and Earth System Sciencespt_PT
oaire.citation.volume22pt_PT
oaire.fundingStreamOE
oaire.fundingStreamInvestigador FCT
oaire.fundingStream3599-PPCDT
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameLeonardo Teixeira de Calheiros e Menezes
person.familyNameBenali
person.familyNamePereira
person.familyNameSilva
person.familyNameCarvalho Nunes
person.givenNameTomás
person.givenNameAkli
person.givenNameMário
person.givenNameJoão
person.givenNameJoão Pedro
person.identifier582070
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person.identifier.ciencia-id0813-A097-DDA9
person.identifier.ciencia-id2911-5CBD-5FA9
person.identifier.orcid0000-0002-8240-3502
person.identifier.orcid0000-0002-4325-3804
person.identifier.orcid0000-0001-6603-7453
person.identifier.orcid0000-0001-5201-9836
person.identifier.orcid0000-0002-0164-249X
person.identifier.ridJ-7248-2013
person.identifier.ridC-5673-2013
person.identifier.scopus-author-id56810919300
person.identifier.scopus-author-id55421346900
person.identifier.scopus-author-id55447844200
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project.funder.identifierhttp://doi.org/10.13039/501100001871
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project.funder.nameFundação para a Ciência e a Tecnologia
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rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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