Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations

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dc.contributor.author Begue, Nelson
dc.contributor.author Shikwambana, Lerato
dc.contributor.author Bencherif, Hassan
dc.contributor.author Pallotta, Juan
dc.contributor.author Sivakumar, Venkataraman
dc.contributor.author Wolfram, Elian
dc.contributor.author Mbatha, Nkanyiso
dc.contributor.author Orte, Facundo
dc.contributor.author Du Preez, David Jean
dc.contributor.author Ranaivombola, Marion
dc.contributor.author Piketh, Stuart
dc.contributor.author Formenti, Paola
dc.date.accessioned 2020-10-28T11:52:21Z
dc.date.available 2020-10-28T11:52:21Z
dc.date.issued 2020-03
dc.description.abstract This study investigates the influence of the 2015 Calbuco eruption (41.2◦ S, 72.4◦ W; Chile) on the total columnar aerosol optical properties over the Southern Hemisphere. The well-known technic of sun photometry was applied for the investigation of the transport and spatiotemporal evolution of the optical properties of the volcanic plume. The CIMEL sun photometer measurements performed at six South American and three African sites were statistically analysed. This study involves the use of the satellite observations and a back-trajectory model. The passage of the Calbuco plume is statistically detectable in the aerosol optical depth (AOD) observations obtained from sun photometer and MODIS observations. This statistical detection confirms that the majority of the plume was transported over the northeastern parts of South America and reached the South African region 1 week after the eruption. The plume impacted the southern parts of South America to a lesser extent. The highest AOD anomalies were observed over the northeastern parts of South America. Over the South African sites, the AOD anomalies induced by the spread of the plume were quite homogeneously distributed between the east and west coasts. The optical characteristics of the plume near the source region were consistent with an ash-bearing plume. Conversely, sites further from the Calbuco volcano were influenced by ash-free plume. The optical properties discussed in this paper will be used as inputs for numerical models for further investigation of the ageing of the Calbuco plume in a forthcoming study. en_ZA
dc.description.department Geography, Geoinformatics and Meteorology en_ZA
dc.description.librarian pm2020 en_ZA
dc.description.uri https://www.annales-geophysicae.net en_ZA
dc.identifier.citation Bègue, N., Shikwambana, L., Bencherif, H. et al. 2020, 'Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations' Annales Geophysicae, vol. 38, no. 2, pp. 395–420. en_ZA
dc.identifier.issn 0992-7689 (print)
dc.identifier.issn 1432-0576 (online)
dc.identifier.other 10.5194/angeo-38-395-2020
dc.identifier.uri http://hdl.handle.net/2263/76635
dc.language.iso en en_ZA
dc.publisher Copernicus Publications en_ZA
dc.rights © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License. en_ZA
dc.subject Volcanic eruption en_ZA
dc.subject Volcanic plume en_ZA
dc.subject Analysis en_ZA
dc.subject Statistics en_ZA
dc.subject Observations en_ZA
dc.title Statistical analysis of the long-range transport of the 2015 Calbuco volcanic plume from ground-based and space-borne observations en_ZA
dc.type Article en_ZA


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