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dc.contributor.authorWagner, Robert
dc.contributor.authorSchepanski, Kerstin
dc.contributor.authorKlose, Martina
dc.contributor.otherBarcelona Supercomputing Center
dc.date.accessioned2021-11-09T17:43:32Z
dc.date.available2021-11-09T17:43:32Z
dc.date.issued2021
dc.identifier.citationWagner, R.; Schepanski, K.; Klose, M. The dust emission potential of agricultural-like fires—theoretical estimates from two conceptually different dust emission parameterizations. "Journal of Geophysical Research: Atmospheres", 2021, vol. 126, núm. 18, e2020JD034355.
dc.identifier.issn2169-897X
dc.identifier.issn2169-8996
dc.identifier.urihttp://hdl.handle.net/2117/355896
dc.description.abstractAgricultural fires affecting grass-, crop- and shrublands represent a major, mainly anthropogenically driven disturbance of many ecosystems. In addition to emissions of carbonaceous aerosol, they were found to inject also mineral dust particles into the atmosphere. The fires can significantly modulate the near-surface wind patterns so that conditions suitable for dust emission occur. However, the exact emission mechanism has not been investigated so far, but is inevitable for the understanding of its impacts on the Earth system. Here, we test two dust emission parameterizations representing saltation bombardment (SALT) and direct aerodynamic dust entrainment by (convective) turbulence (convective turbulent dust emission, CTDE) in the context of fire-modulated wind patterns using large-eddy simulation with an idealized setup to represent typical agricultural fire settings. Favorable aerodynamic preconditions for the initialization of both emission processes are found, however, with sometimes significant differences in dust emission flux depending on specific wind and fire properties. The strong fire-induced modulations of the instantaneous momentum flux suggest that CTDE can be a very potent emission process in the fire vicinity. Nevertheless, fire impacts on the friction velocity can be significant too, so that dust emission through SALT is facilitated as well. Ultimately, the specific aerodynamic conditions within pyro-convectively modulated wind patterns require the development of a parameterization that can describe these unique fire-related dust emissions and their influencing factors properly. This will finally allow for considering fire-induced dust emissions in aerosol-atmosphere models and an investigation of its atmospheric impacts such as on the radiation budget.
dc.description.sponsorshipR. Wagner and K. Schepanski thank the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for funding the project SCHE 1678/5–1. M. Klose has received funding from the European Union's Horizon 2020 research and innovation program under the Marie Skłodowska-Curie grant agreement No. 789630 and from the Helmholtz Association's Initiative and Networking Fund (grant agreement no. VH-NG-1533). The authors acknowledge the Center for Information Services and High performance Computing (ZIH) of the Technische Universität Dresden (TU Dresden) for providing computing capacity. The authors are grateful to the three anonymous reviewers for their valuable comments and suggestions that helped to improved the quality of the paper.
dc.format.extent20 p.
dc.language.isoeng
dc.publisherAmerican Geophysical Union
dc.rightsAttribution 3.0 Spain
dc.rightsAttribution 4.0 International (CC BY 4.0)
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/es/
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida
dc.subject.lcshDust particles
dc.subject.lcshComputer simulation
dc.subject.lcshEarth system -- environmental sciences
dc.subject.otherDust emission
dc.subject.otherParameterizations
dc.subject.otherFire-related dust emissions
dc.subject.otherMineral dust particles
dc.subject.otherSimulation
dc.titleThe dust emission potential of agricultural-like fires—theoretical estimates from two conceptually different dust emission parameterizations
dc.typeArticle
dc.subject.lemacSimulació per ordinador
dc.identifier.doi10.1029/2020JD034355
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://agupubs.onlinelibrary.wiley.com/doi/10.1029/2020JD034355
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020/789630/EU/Addressing key uncertainties in mineral DUST EmiSsion modelling to better constrain the global dust cycle/DUST.ES
local.citation.othere2020JD034355
local.citation.publicationNameJournal of Geophysical Research: Atmospheres
local.citation.volume126
local.citation.number18
dc.relation.datasethttps://doi.org/10.5281/zenodo.5205676


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