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:https://doi.org/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

Data sets

BASIL, Raman Lidar, Candillargues Di Girolamo Paolo - UNIBAS-Scuola di Ingegneria (PI or Lead scientist) https://doi.org/10.6096/MISTRALS-HYMEX.WATER_VAPOUR_RAMAN_BASIL

Water vapour DiAL LEANDRE 2, ATR42/SAFIRE, version 2 Flamant Cyrille - LATMOS (PI or Lead scientist) https://doi.org/10.6096//MISTRALS-HYMEX.WATER_VAPOUR_DIAL_LEANDRE2.V2

Raman Water Vapour LIDAR, Ciutadella-Menorca Chazette Patrick - CEA (PI or Lead scientist) https://doi.org/10.6096/MISTRALS-HYMEX.WATER_VAPOUR_RAMAN_WALI

AEROSOL OPC CNRM/GAME ATR42/SAFIRE SOP1 Burnet Frédéric - GAME/CNRM (PI or Lead scientist) Bourrianne Thierry - GAME/CNRM (Dataset contact) https://doi.org/10.6096/MISTRALS-HYMEX.CNRM-OPC

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.