DOI: 10.5194/hess-18-4733-2014
Scopus记录号: 2-s2.0-84913556035
论文题名: Results from a full coupling of the HIRHAM regional climate model and the MIKE SHE hydrological model for a Danish catchment
作者: Larsen M ; A ; D ; , Refsgaard J ; C ; , Drews M ; , Butts M ; B ; , Jensen K ; H ; , Christensen J ; H ; , Christensen O ; B
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2014
卷: 18, 期: 11 起始页码: 4733
结束页码: 4749
语种: 英语
Scopus关键词: Catchments
; Computer simulation
; Data transfer
; Mean square error
; Runoff
; Tensors
; Wind
; Computational overheads
; Cumulative precipitation
; Hydrological modeling
; Modeling variability
; Performance statistics
; Regional climate modeling
; Regional climate models
; Root-mean-square errors
; Climate models
; catchment
; climate modeling
; discharge
; energy flux
; hydrological modeling
; precipitation (climatology)
; regional climate
; Denmark
; Midtjylland
; Skjern Basin
英文摘要: A major challenge in the emerging research field of coupling of existing regional climate models (RCMs) and hydrology/land-surface models is the computational interaction between the models. Here we present results from a full two-way coupling of the HIRHAM RCM over a 4000 km × 2800 km domain at 11 km resolution and the combined MIKE SHE-SWET hydrology and land-surface models over the 2500 km2 Skjern River catchment. A total of 26 one-year runs were performed to assess the influence of the data transfer interval (DTI) between the two models and the internal HIRHAM model variability of 10 variables. DTI frequencies between 12 and 120 min were assessed, where the computational overhead was found to increase substantially with increasing exchange frequency. In terms of hourly and daily performance statistics the coupled model simulations performed less accurately than the uncoupled simulations, whereas for longer-term cumulative precipitation the opposite was found, especially for more frequent DTI rates. Four of six output variables from HIRHAM, precipitation, relative humidity, wind speed and air temperature, showed statistically significant improvements in root-mean-square error (RMSE) by reducing the DTI. For these four variables, the HIRHAM RMSE variability corresponded to approximately half of the influence from the DTI frequency and the variability resulted in a large spread in simulated precipitation. Conversely, DTI was found to have only a limited impact on the energy fluxes and discharge simulated by MIKE SHE. © Author(s) 2014. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/78066
Appears in Collections: 气候变化事实与影响
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作者单位: Department of Geosciences and Natural Resource Management, University of Copenhagen, Øster Voldgade 10, Copenhagen, Denmark; Geological Survey of Denmark and Greenland, Øster Voldgade 10, Copenhagen, Denmark; Department of Management Engineering, Technical University of Denmark, Risø Campus, Frederiksborgvej 399, Roskilde, Denmark; DHI, Agern Alle 5, Hørsholm, Denmark; Danish Meteorological Institute, Lyngbyvej 100, Copenhagen, Denmark
Recommended Citation:
Larsen M,A,D,et al. Results from a full coupling of the HIRHAM regional climate model and the MIKE SHE hydrological model for a Danish catchment[J]. Hydrology and Earth System Sciences,2014-01-01,18(11)