The radiative impact of desert dust on orographic rain in the Cévennes–Vivarais area: a case study from HyMeX

Flamant, C.; Chaboureau, J.-P.; Chazette, P.; Di Girolamo, P.; Bourrianne, T.; Totems, J.; Cacciani, M.

doi:10.5194/acp-15-12231-2015

Articles | Volume 15, issue 21

https://doi.org/10.5194/acp-15-12231-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

Hydrological cycle in the Mediterranean (ACP/AMT/GMD/HESS/NHESS/OS...

https://doi.org/10.5194/acp-15-12231-2015

© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 15, issue 21

Research article

|

04 Nov 2015

Research article |

| 04 Nov 2015

The radiative impact of desert dust on orographic rain in the Cévennes–Vivarais area: a case study from HyMeX

C. Flamant, J.-P. Chaboureau, P. Chazette, P. Di Girolamo, T. Bourrianne, J. Totems, and M. Cacciani

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Cumulative views and downloads (calculated since 21 Aug 2015)

Month	HTML	PDF	XML	Total
Aug 2015	49	46	6	101
Sep 2015	33	24	2	59
Oct 2015	34	18	10	62
Nov 2015	128	106	5	239
Dec 2015	37	44	0	81
Jan 2016	49	20	2	71
Feb 2016	33	14	0	47
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May 2016	9	3	0	12
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Latest update: 15 Nov 2025

Short summary

We analyze the direct radiative impact of an intense African dust plume on orographic precipitation in the western Mediterranean in the fall of 2012 using high-resolution simulations from a convection permitting mesoscale model validated against measurements acquired during the first special observation period of HyMeX. We show that the dust's direct radiative effect in such a dynamical environment is not sufficient to impact 24h of accumulated rainfall over the Cevennes in the dust simulation.