ID:
publications-791
Type:
PEER REVIEWED ARTICLE
Year:
2014
Authors:
Lena M. Tallaksen , Kerstin Stahl
Title:
Spatial and temporal patterns of large-scale droughts in Europe: Model dispersion and performance
Venue/Journal:
DOI:
10.1002/2013gl058573
Research type:
Data Management & Analytics
Water System:
Precipitation & Ecological Systems
Technical Focus:
Abstract:
AbstractThis study explores the performance of a suite of offâline, global (hydrological and land surface) models in mapping spatial and temporal patterns of largeâscale hydrological droughts in Europe from simulated runoff in the period 1963â2000. Consistent model behavior was found for annual variability in mean drought area, whereas high model dispersion was revealed in the weekly evolution of contiguous area in drought and its annual maximum. Comparison with nearly three hundred catchmentâscale streamflow observations showed an overall tendency to overestimate the number of drought events and hence underestimate drought duration, whereas persistence in droughtâaffected area (weekly mean) was underestimated, noticeable for one group of models. The high model dispersion in temporal and spatial persistence of drought identified implies that care should be taken when analyzing drought characteristics from only one or a limited number of models unless validated specifically for hydrological drought.
Link with Projects:
282769
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