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  Uncertainty in Sahel precipitation change: role of the warming of the North Atlantic and Euro-Mediterranean areas

Monerie, P.-A., Biasutti, M., Mignot, J., Mohino, E., Pohl, B., Zappa, G. (2023): Uncertainty in Sahel precipitation change: role of the warming of the North Atlantic and Euro-Mediterranean areas, XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG) (Berlin 2023).
https://doi.org/10.57757/IUGG23-1888

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Item Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017653 Version Permalink: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017653_1
Genre: Conference Paper

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 Creators:
Monerie, Paul-Arthur1, Author
Biasutti, Michela1, Author
Mignot, Juliette1, Author
Mohino, Elsa1, Author
Pohl, Benjamin1, Author
Zappa, Giuseppe1, Author
Affiliations:
1IUGG 2023, General Assemblies, 1 General, International Union of Geodesy and Geophysics (IUGG), External Organizations, ou_5011304              

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 Abstract: The West African Monsoon (WAM) brings precipitation in summer for around 80 million people from Senegal to Chad. Variability of the monsoon circulation has large impacts on Sahelian societies. However, future changes in Sahel precipitation are uncertain because of large differences between projections of various climate models. We show that uncertainty in Sahel precipitation change is associated with uncertainty at simulating future changes in surface air temperature over the northern Hemisphere, towards the end of the 21st century. We use a storyline approach, a statistical method, to construct scenarios of changes in Sahel precipitation, whose differences only depend on effects and uncertainty at simulating selected remote drivers of Sahel precipitation change. We select two remote drivers, the warming of the Atlantic Ocean and of the Euro-Mediterranean area. We show that uncertainty in changes in Atlantic Ocean and Euro-Mediterranean surface air temperature explains up to 50% of Sahel precipitation change uncertainty. We suggest that reducing uncertainty in the future warming of the North Atlantic and the Euro-Mediterranean areas would then allow reducing uncertainty in future changes in Sahel precipitation.

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Language(s): eng - English
 Dates: 2023
 Publication Status: Finally published
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.57757/IUGG23-1888
 Degree: -

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Place of Event: Berlin
Start-/End Date: 2023-07-11 - 2023-07-20

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Title: XXVIII General Assembly of the International Union of Geodesy and Geophysics (IUGG)
Source Genre: Proceedings
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Publ. Info: Potsdam : GFZ German Research Centre for Geosciences
Pages: - Volume / Issue: - Sequence Number: - Start / End Page: - Identifier: -