Combined effects of climate models, hydrological model structures and land use scenarios on hydrological impacts of climate change
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Combined effects of climate models, hydrological model structures and land use scenarios on hydrological impacts of climate change. / Karlsson, Ida B.; Sonnenborg, Torben O.; Refsgaard, Jens Christian; Trolle, Dennis; Borgesen, Christen Duus; Olesen, Jorgen E.; Jeppesen, Erik; Jensen, Karsten Høgh.
In: Journal of Hydrology, Vol. 535, 04.2016, p. 301-317.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Combined effects of climate models, hydrological model structures and land use scenarios on hydrological impacts of climate change
AU - Karlsson, Ida B.
AU - Sonnenborg, Torben O.
AU - Refsgaard, Jens Christian
AU - Trolle, Dennis
AU - Borgesen, Christen Duus
AU - Olesen, Jorgen E.
AU - Jeppesen, Erik
AU - Jensen, Karsten Høgh
PY - 2016/4
Y1 - 2016/4
N2 - Impact studies of the hydrological response of future climate change are important for the water authoritieswhen risk assessment, management and adaptation to a changing climate are carried out. The objectiveof this study was to model the combined effect of land use and climate changes on hydrology for a486 km2 catchment in Denmark and to evaluate the sensitivity of the results to the choice of hydrologicalmodel. Three hydrological models, NAM, SWAT and MIKE SHE, were constructed and calibrated usingsimilar methods. Each model was forced with results from four climate models and four land use scenarios.The results revealed that even though the hydrological models all showed similar performance duringcalibration, the mean discharge response to climate change varied up to 30%, and the variations wereeven higher for extreme events (1th and 99th percentile). Land use changes appeared to cause littlechange in mean hydrological responses and little variation between hydrological models. Differencesin hydrological model responses to land use were, however, significant for extremes due to dissimilaritiesin hydrological model structure and process equations. The climate model choice remained the dominantfactor for mean discharge, low and high flows as well as hydraulic head at the end of the century.
AB - Impact studies of the hydrological response of future climate change are important for the water authoritieswhen risk assessment, management and adaptation to a changing climate are carried out. The objectiveof this study was to model the combined effect of land use and climate changes on hydrology for a486 km2 catchment in Denmark and to evaluate the sensitivity of the results to the choice of hydrologicalmodel. Three hydrological models, NAM, SWAT and MIKE SHE, were constructed and calibrated usingsimilar methods. Each model was forced with results from four climate models and four land use scenarios.The results revealed that even though the hydrological models all showed similar performance duringcalibration, the mean discharge response to climate change varied up to 30%, and the variations wereeven higher for extreme events (1th and 99th percentile). Land use changes appeared to cause littlechange in mean hydrological responses and little variation between hydrological models. Differencesin hydrological model responses to land use were, however, significant for extremes due to dissimilaritiesin hydrological model structure and process equations. The climate model choice remained the dominantfactor for mean discharge, low and high flows as well as hydraulic head at the end of the century.
KW - Climate change impact
KW - Hydrological model structure
KW - Uncertainties
KW - Land use changes
U2 - 10.1016/j.jhydrol.2016.01.069
DO - 10.1016/j.jhydrol.2016.01.069
M3 - Journal article
VL - 535
SP - 301
EP - 317
JO - Journal of Hydrology
JF - Journal of Hydrology
SN - 0022-1694
ER -
ID: 167477802