Impact du changement climatique sur les sécheresses en Bretagne : Automatisation d'un bilan hydrique avec ArcGis et Python

Abstract : This study focuses on drought evolution during the 21st century in Brittany. It deals with ARPEGE-Climate's simulations according to various IPCC's scenarios: B1, A1B and A2. Droughts are being characterized by using evaporation deficit, which is calculated in a soil water balance. The computation of that parameter has been automated and spatial with Python scripts. Regional maps reveal a weaker deficit in Western Brittany than in Eastern. That deficit might increase during the 21st century for the whole territory. Droughts with similar intensity than the drought observed in 1976 in Rennes, might become common in the south-east of Brittany. The regional and local approach allowed with these scripts make them useful for decision-support in adaptation policy towards climate change. Indeed, the resolution obtained matches the scale of local decision studies. That study is being realistic due to the use of high spatial resolution data in terms of pedology and land use.
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Journal articles
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https://halshs.archives-ouvertes.fr/halshs-01071878
Contributor : Vincent Dubreuil <>
Submitted on : Monday, October 6, 2014 - 10:13:42 PM
Last modification on : Friday, July 5, 2019 - 12:42:03 PM

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  • HAL Id : halshs-01071878, version 1

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Chloé Lamy, Vincent Dubreuil. Impact du changement climatique sur les sécheresses en Bretagne : Automatisation d'un bilan hydrique avec ArcGis et Python. 10.3166/RIG.24.355-375, 2014, 24 (3), pp.355-375. ⟨halshs-01071878⟩

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