Articles | Volume 24, issue 3
https://doi.org/10.5194/nhess-24-999-2024
https://doi.org/10.5194/nhess-24-999-2024
Research article
 | 
21 Mar 2024
Research article |  | 21 Mar 2024

A new approach for drought index adjustment to clay-shrinkage-induced subsidence over France: advantages of the interactive leaf area index

Sophie Barthelemy, Bertrand Bonan, Jean-Christophe Calvet, Gilles Grandjean, David Moncoulon, Dorothée Kapsambelis, and Séverine Bernardie

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Cited articles

Barthelemy, S.: A new drought index fitted to clay shrinkage induced subsidence over France: benefits of interactive leaf area index, Barthelemy et al. 2023 – Figure data, Figshare [data set], https://doi.org/10.6084/m9.figshare.23559507.v1, 2023. 
Boone, A., Calvet, J. C., and Noilhan, J.: Inclusion of a third soil layer in a land surface scheme using the force-restore method, J. Appl. Meteorol., 38, 1611–1630, https://doi.org/10.1175/1520-0450(1999)038<1611:IOATSL>2.0.CO;2, 1999. 
Boone, A., Masson, V., Meyers, T., and Noilhan, J.: The Influence of the Inclusion of Soil Freezing on Simulations by a Soil–Vegetation–Atmosphere Transfer Scheme, J. Appl. Meteorol., 39, 1544–1569, https://doi.org/10.1175/1520-0450(2000)039<1544:TIOTIO>2.0.CO;2, 2000. 
BRGM: M'informer sur le retrait-gonflement des argiles – Exposition du territoire au phénomène, https://www.georisques.gouv.fr/articles-risques/retrait-gonflement-des-argiles/exposition-du-territoire-au-phenomene, last access: 11 March 2024. 
Bronswijk, J. J. B.: Prediction of actual cracking and subsidence in clay soils, Soil Sci., 148, 87–93, https://doi.org/10.1097/00010694-198908000-00002, 1989. 
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Short summary
This work presents a drought index specifically adapted to subsidence, a seasonal phenomenon of soil shrinkage that occurs frequently in France and damages buildings. The index is computed from land surface model simulations and evaluated by a rank correlation test with insurance data. With its optimal configuration, the index is able to identify years of both zero and significant loss.
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