Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean
Abstract Saharan dust intrusions strongly impact Atlantic and Mediterranean coastal regions. Today, most operational dust forecasts extend only 2–5 days. Here we show that on timescales of weeks to months, North African dust emission and transport are impacted by sudden stratospheric warmings (SSWs)...
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ftinsu:oai:HAL:hal-04238785v1 2023-11-12T04:22:15+01:00 Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean Dai, Ying Hitchcock, Peter Mahowald, Natalie Domeisen, Daniela Hamilton, Douglas Li, Longlei Marticorena, Beatrice Kanakidou, Maria Mihalopoulos, Nikolaos Aboagye-Okyere, Adwoa Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) 2022-12 https://hal.science/hal-04238785 https://hal.science/hal-04238785/document https://hal.science/hal-04238785/file/s41467-022-35403-1.pdf https://doi.org/10.1038/s41467-022-35403-1 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-022-35403-1 hal-04238785 https://hal.science/hal-04238785 https://hal.science/hal-04238785/document https://hal.science/hal-04238785/file/s41467-022-35403-1.pdf doi:10.1038/s41467-022-35403-1 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-04238785 Nature Communications, 2022, 13 (1), pp.7744. ⟨10.1038/s41467-022-35403-1⟩ [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2022 ftinsu https://doi.org/10.1038/s41467-022-35403-1 2023-10-18T16:23:26Z Abstract Saharan dust intrusions strongly impact Atlantic and Mediterranean coastal regions. Today, most operational dust forecasts extend only 2–5 days. Here we show that on timescales of weeks to months, North African dust emission and transport are impacted by sudden stratospheric warmings (SSWs), which establish a negative North Atlantic Oscillation-like surface signal. Chemical transport models show a large-scale dipolar dust response to SSWs, with the burden in the Eastern Mediterranean enhanced up to 30% and a corresponding reduction in West Africa. Observations of inhalable particulate (PM 10 ) concentrations and aerosol optical depth confirm this dipole. On average, a single SSW causes 680–2460 additional premature deaths in the Eastern Mediterranean and prevents 1180–2040 premature deaths in West Africa from exposure to dust-source fine particulate (PM 2.5 ). Currently, SSWs are predictable 1–2 weeks in advance. Altogether, the stratosphere represents an important source of subseasonal predictability for air quality over West Africa and the Eastern Mediterranean. Article in Journal/Newspaper North Atlantic North Atlantic oscillation Institut national des sciences de l'Univers: HAL-INSU Nature Communications 13 1 |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
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[SDE]Environmental Sciences |
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[SDE]Environmental Sciences Dai, Ying Hitchcock, Peter Mahowald, Natalie Domeisen, Daniela Hamilton, Douglas Li, Longlei Marticorena, Beatrice Kanakidou, Maria Mihalopoulos, Nikolaos Aboagye-Okyere, Adwoa Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean |
topic_facet |
[SDE]Environmental Sciences |
description |
Abstract Saharan dust intrusions strongly impact Atlantic and Mediterranean coastal regions. Today, most operational dust forecasts extend only 2–5 days. Here we show that on timescales of weeks to months, North African dust emission and transport are impacted by sudden stratospheric warmings (SSWs), which establish a negative North Atlantic Oscillation-like surface signal. Chemical transport models show a large-scale dipolar dust response to SSWs, with the burden in the Eastern Mediterranean enhanced up to 30% and a corresponding reduction in West Africa. Observations of inhalable particulate (PM 10 ) concentrations and aerosol optical depth confirm this dipole. On average, a single SSW causes 680–2460 additional premature deaths in the Eastern Mediterranean and prevents 1180–2040 premature deaths in West Africa from exposure to dust-source fine particulate (PM 2.5 ). Currently, SSWs are predictable 1–2 weeks in advance. Altogether, the stratosphere represents an important source of subseasonal predictability for air quality over West Africa and the Eastern Mediterranean. |
author2 |
Laboratoire Interuniversitaire des Systèmes Atmosphériques (LISA (UMR_7583)) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité) |
format |
Article in Journal/Newspaper |
author |
Dai, Ying Hitchcock, Peter Mahowald, Natalie Domeisen, Daniela Hamilton, Douglas Li, Longlei Marticorena, Beatrice Kanakidou, Maria Mihalopoulos, Nikolaos Aboagye-Okyere, Adwoa |
author_facet |
Dai, Ying Hitchcock, Peter Mahowald, Natalie Domeisen, Daniela Hamilton, Douglas Li, Longlei Marticorena, Beatrice Kanakidou, Maria Mihalopoulos, Nikolaos Aboagye-Okyere, Adwoa |
author_sort |
Dai, Ying |
title |
Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean |
title_short |
Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean |
title_full |
Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean |
title_fullStr |
Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean |
title_full_unstemmed |
Stratospheric impacts on dust transport and air pollution in West Africa and the Eastern Mediterranean |
title_sort |
stratospheric impacts on dust transport and air pollution in west africa and the eastern mediterranean |
publisher |
HAL CCSD |
publishDate |
2022 |
url |
https://hal.science/hal-04238785 https://hal.science/hal-04238785/document https://hal.science/hal-04238785/file/s41467-022-35403-1.pdf https://doi.org/10.1038/s41467-022-35403-1 |
genre |
North Atlantic North Atlantic oscillation |
genre_facet |
North Atlantic North Atlantic oscillation |
op_source |
ISSN: 2041-1723 EISSN: 2041-1723 Nature Communications https://hal.science/hal-04238785 Nature Communications, 2022, 13 (1), pp.7744. ⟨10.1038/s41467-022-35403-1⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/s41467-022-35403-1 hal-04238785 https://hal.science/hal-04238785 https://hal.science/hal-04238785/document https://hal.science/hal-04238785/file/s41467-022-35403-1.pdf doi:10.1038/s41467-022-35403-1 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1038/s41467-022-35403-1 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
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1782337345694990336 |