Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak

Giordan Lighthouse, located on the island of Gozo in the Malta-Sicily Channel within the central Mediterranean region, is ideally located to study the primary sources of atmospheric pollution. A total of 10 years of data have been accumulated from the reactive gas and greenhouse gas detectors and th...

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Main Authors: Martin Saliba, Francelle Azzopardi, Rebecca Muscat, Marvic Grima, Alexander Smyth, Jukka-Pekka Jalkanen, Lasse Johansson, Alan Deidun, Adam Gauci, Charles Galdies, Tonio Caruana, Raymond Ellul
Format: Article
Language:English
Published: MDPI AG 2021-07-01
Series:Journal of Marine Science and Engineering
Subjects:
Online Access:https://www.mdpi.com/2077-1312/9/7/762
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author Martin Saliba
Francelle Azzopardi
Rebecca Muscat
Marvic Grima
Alexander Smyth
Jukka-Pekka Jalkanen
Lasse Johansson
Alan Deidun
Adam Gauci
Charles Galdies
Tonio Caruana
Raymond Ellul
author_facet Martin Saliba
Francelle Azzopardi
Rebecca Muscat
Marvic Grima
Alexander Smyth
Jukka-Pekka Jalkanen
Lasse Johansson
Alan Deidun
Adam Gauci
Charles Galdies
Tonio Caruana
Raymond Ellul
author_sort Martin Saliba
collection DOAJ
description Giordan Lighthouse, located on the island of Gozo in the Malta-Sicily Channel within the central Mediterranean region, is ideally located to study the primary sources of atmospheric pollution. A total of 10 years of data have been accumulated from the reactive gas and greenhouse gas detectors and the aerosol analyzers found at this Global Atmosphere Watch (GAW) regional station. The data has been evaluated, resulting in trends in emissions from shipping recorded within the same region coming to the fore. The other source of emissions that was evident within the recorded data originated from Mt. Etna, located on the island of Sicily and representing the highest active volcano in Europe. The aim of this paper is to investigate the effect of ship emissions on trace gases and aerosol background measurements at Giordan Lighthouse, including the putative influence of COVID-19 on the same emissions. The model used to evaluate ship emissions was the Ship Traffic Emission Assessment Model (STEAM). From trace gas measurements at Giordan Lighthouse, a slowly decreasing trend in sulfur oxide (SO<sub>x</sub>) and nitrogen oxide (NO<sub>x</sub>) emissions was noted. To better understand the air quality results obtained, the STEAM model was fed, as an input, an Automatic Identification System (AIS) dataset to describe the vessel activity in the area concerned. This study also investigates the effects of the COVID19 pandemic on marine traffic patterns within the area and any corresponding changes in the air quality. Such an analysis was carried out through the use of SENTINEL 5 data.
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spelling doaj.art-7cc03de0ed1e40aab2f3b0f5f94636b92023-11-22T04:09:19ZengMDPI AGJournal of Marine Science and Engineering2077-13122021-07-019776210.3390/jmse9070762Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 OutbreakMartin Saliba0Francelle Azzopardi1Rebecca Muscat2Marvic Grima3Alexander Smyth4Jukka-Pekka Jalkanen5Lasse Johansson6Alan Deidun7Adam Gauci8Charles Galdies9Tonio Caruana10Raymond Ellul11Department of Geosciences, University of Malta, MSD 2080 Msida, MaltaMalta Competition and Consumer Affairs Authority, HMR 9010 Blata L-Bajda, MaltaDepartment of Geosciences, University of Malta, MSD 2080 Msida, MaltaDepartment of Geosciences, University of Malta, MSD 2080 Msida, MaltaSmytec Ltd., Spalding PE12 0XX, UKFinnish Meteorological Institute, 00101 Helsinki, FinlandFinnish Meteorological Institute, 00101 Helsinki, FinlandDepartment of Geosciences, University of Malta, MSD 2080 Msida, MaltaDepartment of Geosciences, University of Malta, MSD 2080 Msida, MaltaInstitute of Earth Systems, University of Malta, MSD 2080 Msida, MaltaDepartment of Geosciences, University of Malta, MSD 2080 Msida, MaltaDepartment of Geosciences, University of Malta, MSD 2080 Msida, MaltaGiordan Lighthouse, located on the island of Gozo in the Malta-Sicily Channel within the central Mediterranean region, is ideally located to study the primary sources of atmospheric pollution. A total of 10 years of data have been accumulated from the reactive gas and greenhouse gas detectors and the aerosol analyzers found at this Global Atmosphere Watch (GAW) regional station. The data has been evaluated, resulting in trends in emissions from shipping recorded within the same region coming to the fore. The other source of emissions that was evident within the recorded data originated from Mt. Etna, located on the island of Sicily and representing the highest active volcano in Europe. The aim of this paper is to investigate the effect of ship emissions on trace gases and aerosol background measurements at Giordan Lighthouse, including the putative influence of COVID-19 on the same emissions. The model used to evaluate ship emissions was the Ship Traffic Emission Assessment Model (STEAM). From trace gas measurements at Giordan Lighthouse, a slowly decreasing trend in sulfur oxide (SO<sub>x</sub>) and nitrogen oxide (NO<sub>x</sub>) emissions was noted. To better understand the air quality results obtained, the STEAM model was fed, as an input, an Automatic Identification System (AIS) dataset to describe the vessel activity in the area concerned. This study also investigates the effects of the COVID19 pandemic on marine traffic patterns within the area and any corresponding changes in the air quality. Such an analysis was carried out through the use of SENTINEL 5 data.https://www.mdpi.com/2077-1312/9/7/762mediterraneanshipping emissionssulphur dioxidenitrogen oxidesCOVID-19
spellingShingle Martin Saliba
Francelle Azzopardi
Rebecca Muscat
Marvic Grima
Alexander Smyth
Jukka-Pekka Jalkanen
Lasse Johansson
Alan Deidun
Adam Gauci
Charles Galdies
Tonio Caruana
Raymond Ellul
Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak
Journal of Marine Science and Engineering
mediterranean
shipping emissions
sulphur dioxide
nitrogen oxides
COVID-19
title Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak
title_full Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak
title_fullStr Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak
title_full_unstemmed Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak
title_short Trends in Vessel Atmospheric Emissions in the Central Mediterranean over the Last 10 Years and during the COVID-19 Outbreak
title_sort trends in vessel atmospheric emissions in the central mediterranean over the last 10 years and during the covid 19 outbreak
topic mediterranean
shipping emissions
sulphur dioxide
nitrogen oxides
COVID-19
url https://www.mdpi.com/2077-1312/9/7/762
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