@article{fdi:010053465,
  title = {{I}mpact of rainfall spatial distribution on rainfall-runoff modelling efficiency and initial soil moisture conditions estimation},
  author = {{T}ramblay, {Y}ves and {B}ouvier, {C}hristophe and {A}yral, {P}.{A}. and {M}archandise, {A}.},
  editor = {},
  language = {{ENG}},
  abstract = {{A} good knowledge of rainfall is essential for hydrological operational purposes such as flood forecasting. {T}he objective of this paper was to analyze, on a relatively large sample of flood events, how rainfall-runoff modeling using an event-based model can be sensitive to the use of spatial rainfall compared to mean areal rainfall over the watershed. {T}his comparison was based not only on the model's efficiency in reproducing the flood events but also through the estimation of the initial conditions by the model, using different rainfall inputs. {T}he initial conditions of soil moisture are indeed a key factor for flood modeling in the {M}editerranean region. {I}n order to provide a soil moisture index that could be related to the initial condition of the model, the soil moisture output of the {S}afran-{I}sba-{M}odcou ({SIM}) model developed by {M}eteo-{F}rance was used. {T}his study was done in the {G}ardon catchment (545 km(2)) in {S}outh {F}rance, using uniform or spatial rainfall data derived from rain gauge and radar for 16 flood events. {T}he event-based model considered combines the {SCS} runoff production model and the {L}ag and {R}oute routing model. {R}esults show that spatial rainfall increases the efficiency of the model. {T}he advantage of using spatial rainfall is marked for some of the largest flood events. {I}n addition, the relationship between the model's initial condition and the external predictor of soil moisture provided by the {SIM} model is better when using spatial rainfall, in particular when using spatial radar data with {R}-2 values increasing from 0.61 to 0.72.},
  keywords = {},
  booktitle = {},
  journal = {{N}atural {H}azards and {E}arth {S}ystem {S}ciences},
  volume = {11},
  numero = {1},
  pages = {157--170},
  ISSN = {1561-8633},
  year = {2011},
  DOI = {10.5194/nhess-11-157-2011; 10.5194/nhess-12-267-2012},
  URL = {https://www.documentation.ird.fr/hor/fdi:010053465},
}