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Table 1

Data used in the MIKE SHE/MIKE 11 model of the Lena River Basin

Component within modelData source and derivationUse within the MIKE SHE/MIKE 11 model
Basin area Obtained using the USGS GTOPO30 DEMa Defined the model domain within MIKE SHE and specified as a shapefile. 
Topography Values extracted from the USGS GTOPO-30 DEM Defined the topography within MIKE SHE.
Specified as a grid file. 
Sub-catchments The USGS GTOPO-30 DEM, R-ArcticNETb gauging station locations and major tributaries. Defined five main sub-catchments within MIKE SHE. Specified as a shapefile. Also defined the linear reservoir sub-catchments and baseflow sub-catchments.
A grid file defined the locations of the smaller 19 meteorological sub-catchments, which allowed the spatial distribution of climatic variables. Within these areas, parameters were adjusted during model calibration. 
Land use USGS 1 km Global Land Cover Characterisation datac Defined the spatial distribution of land use within the Lena River Basin. Twenty-nine original classes were re-classified into nine classes. Specified as a grid file. 
Vegetation properties: RD and LAI Values from the literature (Arnell 2005) Root depth was defined for each land-cover class. This value describes the depth of the zone from evapotranspiration can occur. These were constant for each land-cover classes. LAI describes the ratio of the leaf area to the ground area. 
River network Using the USGS GTOPO-30, the river network was identified using ArcMap Hydrology Tools. A shapefile was specified in MIKE 11. It was then manually digitised to define the river network. 
Cross-sections Identified and measured using Google Earth Pro. Elevations were extracted from the basin DEM. Defined channel cross-sections within MIKE 11. Each channel width was assigned a stream order.
Elevations were assigned to each cross-section. 
Overland Flow: Manning Number Values from the literature using the approach of Thompson et al. (2013). This was spatially distributed throughout the catchment based on the overlying vegetation. Specified as a grid file. Defined the rate at which overland flow is routed to channels. 
Unsaturated Zone: Soil properties FAO Digital Soil Map of the World.d Using ArcMap, the basin was separated into three main soil classes. Values from the literature (Atwell et al. 1999). Defined for the water content at saturation, water content at field capacity, water content at the wilting point and saturated hydraulic conductivity within each soil class. 
Component within modelData source and derivationUse within the MIKE SHE/MIKE 11 model
Basin area Obtained using the USGS GTOPO30 DEMa Defined the model domain within MIKE SHE and specified as a shapefile. 
Topography Values extracted from the USGS GTOPO-30 DEM Defined the topography within MIKE SHE.
Specified as a grid file. 
Sub-catchments The USGS GTOPO-30 DEM, R-ArcticNETb gauging station locations and major tributaries. Defined five main sub-catchments within MIKE SHE. Specified as a shapefile. Also defined the linear reservoir sub-catchments and baseflow sub-catchments.
A grid file defined the locations of the smaller 19 meteorological sub-catchments, which allowed the spatial distribution of climatic variables. Within these areas, parameters were adjusted during model calibration. 
Land use USGS 1 km Global Land Cover Characterisation datac Defined the spatial distribution of land use within the Lena River Basin. Twenty-nine original classes were re-classified into nine classes. Specified as a grid file. 
Vegetation properties: RD and LAI Values from the literature (Arnell 2005) Root depth was defined for each land-cover class. This value describes the depth of the zone from evapotranspiration can occur. These were constant for each land-cover classes. LAI describes the ratio of the leaf area to the ground area. 
River network Using the USGS GTOPO-30, the river network was identified using ArcMap Hydrology Tools. A shapefile was specified in MIKE 11. It was then manually digitised to define the river network. 
Cross-sections Identified and measured using Google Earth Pro. Elevations were extracted from the basin DEM. Defined channel cross-sections within MIKE 11. Each channel width was assigned a stream order.
Elevations were assigned to each cross-section. 
Overland Flow: Manning Number Values from the literature using the approach of Thompson et al. (2013). This was spatially distributed throughout the catchment based on the overlying vegetation. Specified as a grid file. Defined the rate at which overland flow is routed to channels. 
Unsaturated Zone: Soil properties FAO Digital Soil Map of the World.d Using ArcMap, the basin was separated into three main soil classes. Values from the literature (Atwell et al. 1999). Defined for the water content at saturation, water content at field capacity, water content at the wilting point and saturated hydraulic conductivity within each soil class. 
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