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Remote Sens. 2016, 8(4), 293; doi:10.3390/rs8040293

Error Analysis of Satellite Precipitation-Driven Modeling of Flood Events in Complex Alpine Terrain

1
Civil and Environmental Engineering, University of Connecticut, Storrs, CT 06269, USA
2
Innovation Technologies Center, ITC, Athens 11633, Greece
3
Department of Physics, University of Athens, Athens 15784, Greece
4
Department of Land, Environment, Agriculture and Forestry, University of Padova, Legnaro, PD 35020, Italy
*
Author to whom correspondence should be addressed.
Academic Editors: Prasad S. Thenkabail and Richard Gloaguen
Received: 10 January 2016 / Revised: 1 March 2016 / Accepted: 22 March 2016 / Published: 30 March 2016
View Full-Text   |   Download PDF [2008 KB, uploaded 30 March 2016]   |  

Abstract

The error in satellite precipitation-driven complex terrain flood simulations is characterized in this study for eight different global satellite products and 128 flood events over the Eastern Italian Alps. The flood events are grouped according to two flood types: rain floods and flash floods. The satellite precipitation products and runoff simulations are evaluated based on systematic and random error metrics applied on the matched event pairs and basin-scale event properties (i.e., rainfall and runoff cumulative depth and time series shape). Overall, error characteristics exhibit dependency on the flood type. Generally, timing of the event precipitation mass center and dispersion of the time series derived from satellite precipitation exhibits good agreement with the reference; the cumulative depth is mostly underestimated. The study shows a dampening effect in both systematic and random error components of the satellite-driven hydrograph relative to the satellite-retrieved hyetograph. The systematic error in shape of the time series shows a significant dampening effect. The random error dampening effect is less pronounced for the flash flood events and the rain flood events with a high runoff coefficient. This event-based analysis of the satellite precipitation error propagation in flood modeling sheds light on the application of satellite precipitation in mountain flood hydrology. View Full-Text
Keywords: error propagation; flood event; event characteristics; satellite precipitation product; complex terrain error propagation; flood event; event characteristics; satellite precipitation product; complex terrain
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Mei, Y.; Nikolopoulos, E.I.; Anagnostou, E.N.; Zoccatelli, D.; Borga, M. Error Analysis of Satellite Precipitation-Driven Modeling of Flood Events in Complex Alpine Terrain. Remote Sens. 2016, 8, 293.

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