Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements
Aerosol abundance from widespread deserts over the Arabian Peninsula (AP) plays an important role in the regional climate and air quality. This study investigates the spatio-temporal variability of Aerosol Optical Depth (AOD) ranging from seasonal to inter-annual time scales during the period 2003–2...
Published in: | Atmospheric Environment |
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Format: | Article in Journal/Newspaper |
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Elsevier BV
2018
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Online Access: | http://hdl.handle.net/10754/628275 https://doi.org/10.1016/j.atmosenv.2018.06.011 |
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ftkingabdullahun:oai:repository.kaust.edu.sa:10754/628275 |
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Open Polar |
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King Abdullah University of Science and Technology: KAUST Repository |
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ftkingabdullahun |
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unknown |
topic |
Aerosol optical depth Arabian peninsula ENSO Tokar jet |
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Aerosol optical depth Arabian peninsula ENSO Tokar jet Kumar, K. Ravi Attada, Raju Dasari, Hari Prasad Vellore, Ramesh K. Langodan, Sabique Abualnaja, Yasser Hoteit, Ibrahim Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements |
topic_facet |
Aerosol optical depth Arabian peninsula ENSO Tokar jet |
description |
Aerosol abundance from widespread deserts over the Arabian Peninsula (AP) plays an important role in the regional climate and air quality. This study investigates the spatio-temporal variability of Aerosol Optical Depth (AOD) ranging from seasonal to inter-annual time scales during the period 2003–2016 using satellite retrievals from MISR and MODIS, together with ground-based observations from the Aerosol Robotic Network (AERONET) available during the period 2003–2012 over the AP. The MODIS AOD (MISR AOD) observations exhibit 0.81 and 0.85 (0.71 and 0.76) correlations with ground-based observations during the wet and dry seasons, respectively. The correlations were also found to be significant with respect to the surface monitoring station at Solar village in Saudi Arabia. Our observational analysis reveals higher (lower) concentrations of AOD during dry (wet) seasons over the AP. The observed AODs indicate similar spatial distributions over annual and seasonal time scales, with high AODs over the Southern Red sea (SR), and the Northeast AP, and lower AODs over the central and southern end of the AP. It is also observed that the AOD exhibits year-to-year variations over different sub-regions of the AP. Analyses of the inter-annual variability over the AP reveals a significant relationship between the AOD and El Niño-Southern Oscillation (ENSO) during the summertime. Furthermore, positive AOD anomalies over the AP can be closely linked with the intensification of the westerly jet at the Tokar Gap during La Niña phases. Enhanced monsoon associated heat low over the AP during La Niña phases further favors greater uplift and saltation of dust from desert regions. The reported research was supported by funding from King Abdullah University of Science and Technology (BAS/1/1318-01-01) and the General Commission for Survey (GCS) under Award Number RGC/3/1612-01-0. The authors extend their gratitude to the AERONET team for making their data available for this study. |
author2 |
Beacon Development Company Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division Earth Fluid Modeling and Prediction Group Earth Science and Engineering Program Physical Science and Engineering (PSE) Division Red Sea Research Center (RSRC) Centre for Atmospheric Sciences, Indian Institute of Technology (IITD), New Delhi, , India Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune, , India |
format |
Article in Journal/Newspaper |
author |
Kumar, K. Ravi Attada, Raju Dasari, Hari Prasad Vellore, Ramesh K. Langodan, Sabique Abualnaja, Yasser Hoteit, Ibrahim |
author_facet |
Kumar, K. Ravi Attada, Raju Dasari, Hari Prasad Vellore, Ramesh K. Langodan, Sabique Abualnaja, Yasser Hoteit, Ibrahim |
author_sort |
Kumar, K. Ravi |
title |
Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements |
title_short |
Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements |
title_full |
Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements |
title_fullStr |
Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements |
title_full_unstemmed |
Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements |
title_sort |
aerosol optical depth variability over the arabian peninsula as inferred from satellite measurements |
publisher |
Elsevier BV |
publishDate |
2018 |
url |
http://hdl.handle.net/10754/628275 https://doi.org/10.1016/j.atmosenv.2018.06.011 |
genre |
Aerosol Robotic Network |
genre_facet |
Aerosol Robotic Network |
op_relation |
http://www.sciencedirect.com/science/article/pii/S1352231018303947 Kumar KR, Attada R, Dasari HP, Vellore RK, Langodan S, et al. (2018) Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements. Atmospheric Environment 187: 346–357. Available: http://dx.doi.org/10.1016/j.atmosenv.2018.06.011. doi:10.1016/j.atmosenv.2018.06.011 1352-2310 Atmospheric Environment http://hdl.handle.net/10754/628275 |
op_rights |
NOTICE: this is the author’s version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, [187, , (2018-06-08)] DOI:10.1016/j.atmosenv.2018.06.011 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1016/j.atmosenv.2018.06.011 |
container_title |
Atmospheric Environment |
container_volume |
187 |
container_start_page |
346 |
op_container_end_page |
357 |
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1786843188940505088 |
spelling |
ftkingabdullahun:oai:repository.kaust.edu.sa:10754/628275 2023-12-31T09:58:28+01:00 Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements Kumar, K. Ravi Attada, Raju Dasari, Hari Prasad Vellore, Ramesh K. Langodan, Sabique Abualnaja, Yasser Hoteit, Ibrahim Beacon Development Company Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division Earth Fluid Modeling and Prediction Group Earth Science and Engineering Program Physical Science and Engineering (PSE) Division Red Sea Research Center (RSRC) Centre for Atmospheric Sciences, Indian Institute of Technology (IITD), New Delhi, , India Centre for Climate Change Research, Indian Institute of Tropical Meteorology, Pune, , India 2018-06-08 application/pdf http://hdl.handle.net/10754/628275 https://doi.org/10.1016/j.atmosenv.2018.06.011 unknown Elsevier BV http://www.sciencedirect.com/science/article/pii/S1352231018303947 Kumar KR, Attada R, Dasari HP, Vellore RK, Langodan S, et al. (2018) Aerosol Optical Depth variability over the Arabian Peninsula as inferred from satellite measurements. Atmospheric Environment 187: 346–357. Available: http://dx.doi.org/10.1016/j.atmosenv.2018.06.011. doi:10.1016/j.atmosenv.2018.06.011 1352-2310 Atmospheric Environment http://hdl.handle.net/10754/628275 NOTICE: this is the author’s version of a work that was accepted for publication in Atmospheric Environment. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Atmospheric Environment, [187, , (2018-06-08)] DOI:10.1016/j.atmosenv.2018.06.011 . © 2018. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ Aerosol optical depth Arabian peninsula ENSO Tokar jet Article 2018 ftkingabdullahun https://doi.org/10.1016/j.atmosenv.2018.06.011 2023-12-02T20:22:47Z Aerosol abundance from widespread deserts over the Arabian Peninsula (AP) plays an important role in the regional climate and air quality. This study investigates the spatio-temporal variability of Aerosol Optical Depth (AOD) ranging from seasonal to inter-annual time scales during the period 2003–2016 using satellite retrievals from MISR and MODIS, together with ground-based observations from the Aerosol Robotic Network (AERONET) available during the period 2003–2012 over the AP. The MODIS AOD (MISR AOD) observations exhibit 0.81 and 0.85 (0.71 and 0.76) correlations with ground-based observations during the wet and dry seasons, respectively. The correlations were also found to be significant with respect to the surface monitoring station at Solar village in Saudi Arabia. Our observational analysis reveals higher (lower) concentrations of AOD during dry (wet) seasons over the AP. The observed AODs indicate similar spatial distributions over annual and seasonal time scales, with high AODs over the Southern Red sea (SR), and the Northeast AP, and lower AODs over the central and southern end of the AP. It is also observed that the AOD exhibits year-to-year variations over different sub-regions of the AP. Analyses of the inter-annual variability over the AP reveals a significant relationship between the AOD and El Niño-Southern Oscillation (ENSO) during the summertime. Furthermore, positive AOD anomalies over the AP can be closely linked with the intensification of the westerly jet at the Tokar Gap during La Niña phases. Enhanced monsoon associated heat low over the AP during La Niña phases further favors greater uplift and saltation of dust from desert regions. The reported research was supported by funding from King Abdullah University of Science and Technology (BAS/1/1318-01-01) and the General Commission for Survey (GCS) under Award Number RGC/3/1612-01-0. The authors extend their gratitude to the AERONET team for making their data available for this study. Article in Journal/Newspaper Aerosol Robotic Network King Abdullah University of Science and Technology: KAUST Repository Atmospheric Environment 187 346 357 |