Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties

An outstanding Saharan dust event affected the Iberian Peninsula during winter 2016 (20 to 25 February). The impact of this event on ambient PM10 surface levels and its spatial and temporal evolution was investigated by means of data from 250 air quality stations across mainland Spain and the Balear...

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Autores: Titos, G., Ealo, Marina, Pandolfi, Marco, Perez, N., Sola Salvatierra, Yolanda, Sicard, Michaël|||0000-0001-8287-9693, Comerón Tejero, Adolfo|||0000-0001-6886-3679, Querol Carceller, Xavier, Alastuey, Andres
Tipo de recurso: artículo
Fecha de publicación:2017
País:España
Institución:Universitat Politècnica de Catalunya (UPC)
Repositorio:UPCommons. Portal del coneixement obert de la UPC
Idioma:inglés
OAI Identifier:oai:upcommons.upc.edu:2117/104286
Acceso en línea:https://hdl.handle.net/2117/104286
https://dx.doi.org/10.1002/2016JD026252
Access Level:acceso abierto
Palabra clave:Dust -- Environmental aspects
Aerosol
Ceilometer
In situ
Optical properties
Saharan dust
Sun photometer
Pols
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
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spelling Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical propertiesTitos, G.Ealo, MarinaPandolfi, MarcoPerez, N.Sola Salvatierra, YolandaSicard, Michaël|||0000-0001-8287-9693Comerón Tejero, Adolfo|||0000-0001-6886-3679Querol Carceller, XavierAlastuey, AndresDust -- Environmental aspectsAerosolCeilometerIn situOptical propertiesSaharan dustSun photometerPolsÀrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::TeledeteccióAn outstanding Saharan dust event affected the Iberian Peninsula during winter 2016 (20 to 25 February). The impact of this event on ambient PM10 surface levels and its spatial and temporal evolution was investigated by means of data from 250 air quality stations across mainland Spain and the Balearic Islands. The event had a significant impact on surface PM10 levels, and on 22 February, 90% of the air quality monitoring sites registered PM10 concentrations above the EU daily limit value of 50 µg/m3. The study of the attenuated backscattering vertical profiles associated with African dust evidenced a complex structure, with a thick aerosol layer that was at higher altitudes over the pre-Pyrenees compared to the coastal area of Barcelona but closer to the surface than typically observed at both sites. Optical and physical properties of dust particles were investigated at the continental background Global Atmosphere Watch mountain observatory of Montsec (MSA) in the pre-Pyrenees. Good agreement was found between in situ and passive remote sensing methodologies once the aloft dust layer reached the MSA station. Scattering Ångström exponent values decreased to values close to zero (even below zero for surface in situ measurements) indicating the predominance of coarse particles. On the contrary, absorption Ångström exponent values increased during the Saharan dust outbreak denoting an absorption enhancement at shorter wavelengths, characteristic of mineral dust particles. Furthermore, the performance of NMMB/BSC-Dust and BSC-DREAM8b models has been qualitatively evaluated for the dust spatial distribution across Spain and the vertical structure over MSA and Barcelona showing good agreement.20172017-05-1620172017-05-10journal articlehttp://purl.org/coar/resource_type/c_6501VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/2117/104286https://dx.doi.org/10.1002/2016JD026252reponame:UPCommons. Portal del coneixement obert de la UPCinstname:Universitat Politècnica de Catalunya (UPC)InglésengEuropean Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 654109 Aerosols, Clouds, and Trace gases Research InfraStructureopen accesshttp://purl.org/coar/access_right/c_abf2Attribution-NonCommercial-NoDerivs 3.0 Spainhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccessoai:upcommons.upc.edu:2117/1042862026-05-27T15:37:01Z
dc.title.none.fl_str_mv Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
title Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
spellingShingle Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
Titos, G.
Dust -- Environmental aspects
Aerosol
Ceilometer
In situ
Optical properties
Saharan dust
Sun photometer
Pols
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
title_short Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
title_full Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
title_fullStr Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
title_full_unstemmed Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
title_sort Spatiotemporal evolution of a severe winter dust event in the western Mediterranean: Aerosol optical and physical properties
dc.creator.none.fl_str_mv Titos, G.
Ealo, Marina
Pandolfi, Marco
Perez, N.
Sola Salvatierra, Yolanda
Sicard, Michaël|||0000-0001-8287-9693
Comerón Tejero, Adolfo|||0000-0001-6886-3679
Querol Carceller, Xavier
Alastuey, Andres
author Titos, G.
author_facet Titos, G.
Ealo, Marina
Pandolfi, Marco
Perez, N.
Sola Salvatierra, Yolanda
Sicard, Michaël|||0000-0001-8287-9693
Comerón Tejero, Adolfo|||0000-0001-6886-3679
Querol Carceller, Xavier
Alastuey, Andres
author_role author
author2 Ealo, Marina
Pandolfi, Marco
Perez, N.
Sola Salvatierra, Yolanda
Sicard, Michaël|||0000-0001-8287-9693
Comerón Tejero, Adolfo|||0000-0001-6886-3679
Querol Carceller, Xavier
Alastuey, Andres
author2_role author
author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Dust -- Environmental aspects
Aerosol
Ceilometer
In situ
Optical properties
Saharan dust
Sun photometer
Pols
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
topic Dust -- Environmental aspects
Aerosol
Ceilometer
In situ
Optical properties
Saharan dust
Sun photometer
Pols
Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció
description An outstanding Saharan dust event affected the Iberian Peninsula during winter 2016 (20 to 25 February). The impact of this event on ambient PM10 surface levels and its spatial and temporal evolution was investigated by means of data from 250 air quality stations across mainland Spain and the Balearic Islands. The event had a significant impact on surface PM10 levels, and on 22 February, 90% of the air quality monitoring sites registered PM10 concentrations above the EU daily limit value of 50 µg/m3. The study of the attenuated backscattering vertical profiles associated with African dust evidenced a complex structure, with a thick aerosol layer that was at higher altitudes over the pre-Pyrenees compared to the coastal area of Barcelona but closer to the surface than typically observed at both sites. Optical and physical properties of dust particles were investigated at the continental background Global Atmosphere Watch mountain observatory of Montsec (MSA) in the pre-Pyrenees. Good agreement was found between in situ and passive remote sensing methodologies once the aloft dust layer reached the MSA station. Scattering Ångström exponent values decreased to values close to zero (even below zero for surface in situ measurements) indicating the predominance of coarse particles. On the contrary, absorption Ångström exponent values increased during the Saharan dust outbreak denoting an absorption enhancement at shorter wavelengths, characteristic of mineral dust particles. Furthermore, the performance of NMMB/BSC-Dust and BSC-DREAM8b models has been qualitatively evaluated for the dust spatial distribution across Spain and the vertical structure over MSA and Barcelona showing good agreement.
publishDate 2017
dc.date.none.fl_str_mv 2017
2017-05-16
2017
2017-05-10
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/2117/104286
https://dx.doi.org/10.1002/2016JD026252
url https://hdl.handle.net/2117/104286
https://dx.doi.org/10.1002/2016JD026252
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.relation.none.fl_str_mv European Commission http://doi.org/10.13039/100010661 Horizon 2020 Framework Programme 654109 Aerosols, Clouds, and Trace gases Research InfraStructure
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
Attribution-NonCommercial-NoDerivs 3.0 Spain
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:UPCommons. Portal del coneixement obert de la UPC
instname:Universitat Politècnica de Catalunya (UPC)
instname_str Universitat Politècnica de Catalunya (UPC)
reponame_str UPCommons. Portal del coneixement obert de la UPC
collection UPCommons. Portal del coneixement obert de la UPC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301629

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