Articles | Volume 22, issue 7
Research article
27 Jul 2022
Research article |  | 27 Jul 2022

Augmentation of WRF-Hydro to simulate overland-flow- and streamflow-generated debris flow susceptibility in burn scars

Chuxuan Li, Alexander L. Handwerger, Jiali Wang, Wei Yu, Xiang Li, Noah J. Finnegan, Yingying Xie, Giuseppe Buscarnera, and Daniel E. Horton

Data sets

NCEP/EMC, NLDAS Primary Forcing Data L4 Hourly 0.125 x 0.125 degree V002 Y. Xia, K. Mitchell, M. Ek, B. Cosgrove, J, Sheffield, L. Luo, C. Alonge, H. Wei, J. Meng, B. Livneh, Q. Duan, and D. Lohmann

Multi-Radar/Multi-Sensor (MRMS) Precipitation Data National Centers for Environmental Prediction (NCEP)

Surface Meteorology and Physics Data NOAA Physical Sciences Laboratory (PSL)

WFIGS - Wildland Fire Perimeters Full History National Interagency Fire Center (NCEP),0.000000,1.81

Use of WRF-Hydro in postfire debris-flow hazard simulation C. Li

Model code and software

Modification of WRF-Hydro source code to output overland flow C. Li

HazMapper: v1.0 source code (Version 1.0) Scheip, C., and Wegmann, K.

GEE_scripts_for_Handwerger_et_al_2022_NHESS M. Huang and A. L. Handwerger


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Short summary
In January 2021 a storm triggered numerous debris flows in a wildfire burn scar in California. We use a hydrologic model to assess debris flow susceptibility in pre-fire and postfire scenarios. Compared to pre-fire conditions, postfire conditions yield dramatic increases in peak water discharge, substantially increasing debris flow susceptibility. Our work highlights the hydrologic model's utility in investigating and potentially forecasting postfire debris flows at regional scales.
Final-revised paper