Articles | Volume 22, issue 6
https://doi.org/10.5194/hess-22-3197-2018
https://doi.org/10.5194/hess-22-3197-2018
Research article
 | 
07 Jun 2018
Research article |  | 07 Jun 2018

A simplified model of precipitation enhancement over a heterogeneous surface

Guido Cioni and Cathy Hohenegger

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Cited articles

Avissar, R. and Liu, Y.: Three-dimensional numerical study of shallow convective clouds and precipitation induced by land surface forcing, J. Geophys. Res.-Atmos., 101, 7499–7518, 1996.
Budyko, M. I.: The heat balance of the earth's surface, Soviet Geography, 2, 3–13, 1961.
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Chen, F. and Avissar, R.: Impact of land-surface moisture variability on local shallow convective cumulus and precipitation in large-scale models, J. Appl. Meteorol., 33, 1382–1401, 1994.
Cioni, G. and Hohenegger, C.: Effect of soil moisture on diurnal convection and precipitation in Large-Eddy Simulations, J. Hydrometeorol., 18, 1885–1903, https://doi.org/10.1175/JHM-D-16-0241.1, 2017.
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Precipitating thunderstorms can occasionally be triggered by the propagation of a front associated with a circulation similar to a land–sea breeze but caused by the contrast of soil patches with different moisture contents. In this study, using an idealized framework, we quantify which fraction of surface rain comes from the contribution of the aforementioned front and which fraction comes from local evaporation. Results show that these two major sources contribute differently.
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