Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean
This study characterizes the spatiotemporal variability and relative contribution of different types of aerosols to the aerosol optical depth (AOD) over the Eastern Mediterranean as derived from MODIS (Moderate Resolution Imaging Spectroradiometer) Terra (March 2000–December 2012) and Aqua (July 200...
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ftdoajarticles:oai:doaj.org/article:824109e061e94b47aac1d5dd68084891 2023-05-15T13:06:54+02:00 Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean A. K. Georgoulias G. Alexandri K. A. Kourtidis J. Lelieveld P. Zanis U. Pöschl R. Levy V. Amiridis E. Marinou A. Tsikerdekis 2016-11-01T00:00:00Z https://doi.org/10.5194/acp-16-13853-2016 https://doaj.org/article/824109e061e94b47aac1d5dd68084891 EN eng Copernicus Publications https://www.atmos-chem-phys.net/16/13853/2016/acp-16-13853-2016.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-16-13853-2016 1680-7316 1680-7324 https://doaj.org/article/824109e061e94b47aac1d5dd68084891 Atmospheric Chemistry and Physics, Vol 16, Pp 13853-13884 (2016) Physics QC1-999 Chemistry QD1-999 article 2016 ftdoajarticles https://doi.org/10.5194/acp-16-13853-2016 2022-12-30T21:05:52Z This study characterizes the spatiotemporal variability and relative contribution of different types of aerosols to the aerosol optical depth (AOD) over the Eastern Mediterranean as derived from MODIS (Moderate Resolution Imaging Spectroradiometer) Terra (March 2000–December 2012) and Aqua (July 2002–December 2012) satellite instruments. For this purpose, a 0.1° × 0.1° gridded MODIS dataset was compiled and validated against sun photometric observations from the AErosol RObotic NETwork (AERONET). The high spatial resolution and long temporal coverage of the dataset allows for the determination of local hot spots like megacities, medium-sized cities, industrial zones and power plant complexes, seasonal variabilities and decadal averages. The average AOD at 550 nm (AOD 550 ) for the entire region is ∼ 0.22 ± 0.19, with maximum values in summer and seasonal variabilities that can be attributed to precipitation, photochemical production of secondary organic aerosols, transport of pollution and smoke from biomass burning in central and eastern Europe and transport of dust from the Sahara and the Middle East. The MODIS data were analyzed together with data from other satellite sensors, reanalysis projects and a chemistry–aerosol-transport model using an optimized algorithm tailored for the region and capable of estimating the contribution of different aerosol types to the total AOD 550 . The spatial and temporal variability of anthropogenic, dust and fine-mode natural aerosols over land and anthropogenic, dust and marine aerosols over the sea is examined. The relative contribution of the different aerosol types to the total AOD 550 exhibits a low/high seasonal variability over land/sea areas, respectively. Overall, anthropogenic aerosols, dust and fine-mode natural aerosols account for ∼ 51, ∼ 34 and ∼ 15 % of the total AOD 550 over land, while, anthropogenic aerosols, dust and marine aerosols account ∼ 40, ∼ 34 and ∼ 26 % of the total AOD 550 over the sea, based on MODIS Terra and Aqua observations. Article in Journal/Newspaper Aerosol Robotic Network Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 16 21 13853 13884 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 A. K. Georgoulias G. Alexandri K. A. Kourtidis J. Lelieveld P. Zanis U. Pöschl R. Levy V. Amiridis E. Marinou A. Tsikerdekis Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
This study characterizes the spatiotemporal variability and relative contribution of different types of aerosols to the aerosol optical depth (AOD) over the Eastern Mediterranean as derived from MODIS (Moderate Resolution Imaging Spectroradiometer) Terra (March 2000–December 2012) and Aqua (July 2002–December 2012) satellite instruments. For this purpose, a 0.1° × 0.1° gridded MODIS dataset was compiled and validated against sun photometric observations from the AErosol RObotic NETwork (AERONET). The high spatial resolution and long temporal coverage of the dataset allows for the determination of local hot spots like megacities, medium-sized cities, industrial zones and power plant complexes, seasonal variabilities and decadal averages. The average AOD at 550 nm (AOD 550 ) for the entire region is ∼ 0.22 ± 0.19, with maximum values in summer and seasonal variabilities that can be attributed to precipitation, photochemical production of secondary organic aerosols, transport of pollution and smoke from biomass burning in central and eastern Europe and transport of dust from the Sahara and the Middle East. The MODIS data were analyzed together with data from other satellite sensors, reanalysis projects and a chemistry–aerosol-transport model using an optimized algorithm tailored for the region and capable of estimating the contribution of different aerosol types to the total AOD 550 . The spatial and temporal variability of anthropogenic, dust and fine-mode natural aerosols over land and anthropogenic, dust and marine aerosols over the sea is examined. The relative contribution of the different aerosol types to the total AOD 550 exhibits a low/high seasonal variability over land/sea areas, respectively. Overall, anthropogenic aerosols, dust and fine-mode natural aerosols account for ∼ 51, ∼ 34 and ∼ 15 % of the total AOD 550 over land, while, anthropogenic aerosols, dust and marine aerosols account ∼ 40, ∼ 34 and ∼ 26 % of the total AOD 550 over the sea, based on MODIS Terra and Aqua observations. |
format |
Article in Journal/Newspaper |
author |
A. K. Georgoulias G. Alexandri K. A. Kourtidis J. Lelieveld P. Zanis U. Pöschl R. Levy V. Amiridis E. Marinou A. Tsikerdekis |
author_facet |
A. K. Georgoulias G. Alexandri K. A. Kourtidis J. Lelieveld P. Zanis U. Pöschl R. Levy V. Amiridis E. Marinou A. Tsikerdekis |
author_sort |
A. K. Georgoulias |
title |
Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean |
title_short |
Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean |
title_full |
Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean |
title_fullStr |
Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean |
title_full_unstemmed |
Spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the Eastern Mediterranean |
title_sort |
spatiotemporal variability and contribution of different aerosol types to the aerosol optical depth over the eastern mediterranean |
publisher |
Copernicus Publications |
publishDate |
2016 |
url |
https://doi.org/10.5194/acp-16-13853-2016 https://doaj.org/article/824109e061e94b47aac1d5dd68084891 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_source |
Atmospheric Chemistry and Physics, Vol 16, Pp 13853-13884 (2016) |
op_relation |
https://www.atmos-chem-phys.net/16/13853/2016/acp-16-13853-2016.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-16-13853-2016 1680-7316 1680-7324 https://doaj.org/article/824109e061e94b47aac1d5dd68084891 |
op_doi |
https://doi.org/10.5194/acp-16-13853-2016 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
16 |
container_issue |
21 |
container_start_page |
13853 |
op_container_end_page |
13884 |
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1766025871240462336 |