Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain

The Guadalquivir Valley is one of three major O3 hotspots in Spain. An airborne and surface measurement campaign was carried out from July 9th to 11th, 2019 to quantify the local/regional O3 contributions using experimental approaches. Air quality and meteorology data from surface measurements, a microlight aircraft, a helium balloon, and remote sensing data (TROPOMI-NO2-ESA) were used to obtain the 3D distribution of O3 and various tracer pollutants. O3 accumulation over 2.5 days started with inputs from oceanic air masses transported inland by sea breezes, which drew O3 and its precursors from a local/regional origin to the northeastern end of the basin. The orographic–meteorological setting of the valley caused vertical recirculation of the air masses inside the valley that caused the accumulation by increasing regional background O3 concentration by 25–30 ppb. Furthermore, possible Mediterranean O3 contributions and additional vertical recirculation through the entrainment zone of the convective boundary layer also contributed. Using particulate matter finer than 2.5 μm (PM2.5), ultrafine particles (UFP), and black carbon (BC) as tracers of local sources, we calculated that local contributions increased regional O3 levels by 20 ppb inside specific pollution plumes transported by the breeze into the valley, and by 10 ppb during midday when flying over an area with abundant agricultural burning during the morning. Air masses that crossed the southern boundaries of the Betic system at mid-altitude (400–1850 m a.s.l.) on July 10th and 11th may have provided additional O3. Meanwhile, a decreasing trend at high altitudes (3000–5000 m a.s.l.) was observed, signifying that the impact of stratospheric O3 intrusion decreased during the campaign.

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Main Authors: in 't Veld, M., Carnerero, Cristina, Massagué, Jordi, Alastuey, Andrés, De La Rosa, Jesús D., Sánchez de la Campa, A.M., Escudero, Miguel, Mantilla, Enrique, Gangoiti, G., Pérez García-Pando, C., Olid, M., Moreta, Juan R., Hernández, J.L., Santamaría, J., Millán, M., Querol, Xavier
Other Authors: Ministerio de Ciencia, Innovación y Universidades (España)
Format: artículo biblioteca
Language:English
Published: Elsevier 2021-07-10
Subjects:Regional atmospheric pollution, Photochemistry, Agricultural burns, Ozone meteorology,
Online Access:http://hdl.handle.net/10261/237341
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spelling dig-idaea-es-10261-2373412023-01-02T11:37:31Z Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain in 't Veld, M. Carnerero, Cristina Massagué, Jordi Alastuey, Andrés De La Rosa, Jesús D. Sánchez de la Campa, A.M. Escudero, Miguel Mantilla, Enrique Gangoiti, G. Pérez García-Pando, C. Olid, M. Moreta, Juan R. Hernández, J.L. Santamaría, J. Millán, M. Querol, Xavier Ministerio de Ciencia, Innovación y Universidades (España) Alastuey, Andrés [0000-0002-5453-5495] Querol, Xavier [0000-0002-6549-9899] Regional atmospheric pollution Photochemistry Agricultural burns Ozone meteorology The Guadalquivir Valley is one of three major O3 hotspots in Spain. An airborne and surface measurement campaign was carried out from July 9th to 11th, 2019 to quantify the local/regional O3 contributions using experimental approaches. Air quality and meteorology data from surface measurements, a microlight aircraft, a helium balloon, and remote sensing data (TROPOMI-NO2-ESA) were used to obtain the 3D distribution of O3 and various tracer pollutants. O3 accumulation over 2.5 days started with inputs from oceanic air masses transported inland by sea breezes, which drew O3 and its precursors from a local/regional origin to the northeastern end of the basin. The orographic–meteorological setting of the valley caused vertical recirculation of the air masses inside the valley that caused the accumulation by increasing regional background O3 concentration by 25–30 ppb. Furthermore, possible Mediterranean O3 contributions and additional vertical recirculation through the entrainment zone of the convective boundary layer also contributed. Using particulate matter finer than 2.5 μm (PM2.5), ultrafine particles (UFP), and black carbon (BC) as tracers of local sources, we calculated that local contributions increased regional O3 levels by 20 ppb inside specific pollution plumes transported by the breeze into the valley, and by 10 ppb during midday when flying over an area with abundant agricultural burning during the morning. Air masses that crossed the southern boundaries of the Betic system at mid-altitude (400–1850 m a.s.l.) on July 10th and 11th may have provided additional O3. Meanwhile, a decreasing trend at high altitudes (3000–5000 m a.s.l.) was observed, signifying that the impact of stratospheric O3 intrusion decreased during the campaign. The present work was supported by the Spanish Ministry for Ecological Transition (17CAES010); the “Agencia Estatal de Investigación” from the Spanish Ministry of Science, Innovation and Universities and FEDER funds under the project HOUSE (CGL2016-78594-R); the Agencia Estatal de Investigación (RTI2018-095937-B-I00); and the Generalitat de Catalunya (AGAUR 2017 SGR41). We would like to thank the Junta de Andalucía for providing us with air quality data, and the Spanish Met Office (AEMET) for providing meteorological data and facilitating staff and instrumentation for the soundings, as well as ESA for providing TROPOMI-NO2 data and NOAA for the HYSPLIT modeling tool. Cristina Carnerero thanks “Agencia Estatal de Investigación” for the grant received to carry out her PhD (FPI grant: BES-2017-080027). Carlos Pérez García-Pando acknowledges support by the AXA Research Fund, and the Spanish Ministry of Science, Innovation and Universities (RYC-2015-18690). Peer reviewed 2021-04-08T13:57:31Z 2021-04-08T13:57:31Z 2021-07-10 artículo http://purl.org/coar/resource_type/c_6501 Science of the Total Environment 777:144579 (2021) http://hdl.handle.net/10261/237341 10.1016/j.scitotenv.2020.144579 en #PLACEHOLDER_PARENT_METADATA_VALUE# info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2017-2020/CGL2016-78594-R Publisher's version https://doi.org/10.1016/j.scitotenv.2020.144579 Sí open Elsevier
institution IDAEA ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-idaea-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del IDAEA España
language English
topic Regional atmospheric pollution
Photochemistry
Agricultural burns
Ozone meteorology
Regional atmospheric pollution
Photochemistry
Agricultural burns
Ozone meteorology
spellingShingle Regional atmospheric pollution
Photochemistry
Agricultural burns
Ozone meteorology
Regional atmospheric pollution
Photochemistry
Agricultural burns
Ozone meteorology
in 't Veld, M.
Carnerero, Cristina
Massagué, Jordi
Alastuey, Andrés
De La Rosa, Jesús D.
Sánchez de la Campa, A.M.
Escudero, Miguel
Mantilla, Enrique
Gangoiti, G.
Pérez García-Pando, C.
Olid, M.
Moreta, Juan R.
Hernández, J.L.
Santamaría, J.
Millán, M.
Querol, Xavier
Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain
description The Guadalquivir Valley is one of three major O3 hotspots in Spain. An airborne and surface measurement campaign was carried out from July 9th to 11th, 2019 to quantify the local/regional O3 contributions using experimental approaches. Air quality and meteorology data from surface measurements, a microlight aircraft, a helium balloon, and remote sensing data (TROPOMI-NO2-ESA) were used to obtain the 3D distribution of O3 and various tracer pollutants. O3 accumulation over 2.5 days started with inputs from oceanic air masses transported inland by sea breezes, which drew O3 and its precursors from a local/regional origin to the northeastern end of the basin. The orographic–meteorological setting of the valley caused vertical recirculation of the air masses inside the valley that caused the accumulation by increasing regional background O3 concentration by 25–30 ppb. Furthermore, possible Mediterranean O3 contributions and additional vertical recirculation through the entrainment zone of the convective boundary layer also contributed. Using particulate matter finer than 2.5 μm (PM2.5), ultrafine particles (UFP), and black carbon (BC) as tracers of local sources, we calculated that local contributions increased regional O3 levels by 20 ppb inside specific pollution plumes transported by the breeze into the valley, and by 10 ppb during midday when flying over an area with abundant agricultural burning during the morning. Air masses that crossed the southern boundaries of the Betic system at mid-altitude (400–1850 m a.s.l.) on July 10th and 11th may have provided additional O3. Meanwhile, a decreasing trend at high altitudes (3000–5000 m a.s.l.) was observed, signifying that the impact of stratospheric O3 intrusion decreased during the campaign.
author2 Ministerio de Ciencia, Innovación y Universidades (España)
author_facet Ministerio de Ciencia, Innovación y Universidades (España)
in 't Veld, M.
Carnerero, Cristina
Massagué, Jordi
Alastuey, Andrés
De La Rosa, Jesús D.
Sánchez de la Campa, A.M.
Escudero, Miguel
Mantilla, Enrique
Gangoiti, G.
Pérez García-Pando, C.
Olid, M.
Moreta, Juan R.
Hernández, J.L.
Santamaría, J.
Millán, M.
Querol, Xavier
format artículo
topic_facet Regional atmospheric pollution
Photochemistry
Agricultural burns
Ozone meteorology
author in 't Veld, M.
Carnerero, Cristina
Massagué, Jordi
Alastuey, Andrés
De La Rosa, Jesús D.
Sánchez de la Campa, A.M.
Escudero, Miguel
Mantilla, Enrique
Gangoiti, G.
Pérez García-Pando, C.
Olid, M.
Moreta, Juan R.
Hernández, J.L.
Santamaría, J.
Millán, M.
Querol, Xavier
author_sort in 't Veld, M.
title Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain
title_short Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain
title_full Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain
title_fullStr Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain
title_full_unstemmed Understanding the local and remote source contributions to ambient O3 during a pollution episode using a combination of experimental approaches in the Guadalquivir valley, southern Spain
title_sort understanding the local and remote source contributions to ambient o3 during a pollution episode using a combination of experimental approaches in the guadalquivir valley, southern spain
publisher Elsevier
publishDate 2021-07-10
url http://hdl.handle.net/10261/237341
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