GEM-Hydro gridded simulations for the Great Lakes Runoff Inter-comparison Project for Lake Erie (GRIP-E)

This dataset provides gridded model simulations in NetCDF format over the Lake Erie using the GEM-Hydro model done within the Great Lakes Runoff Inter-comparison Project for Lake Erie (GRIP-E). The data are produced with SPS (GEM-Surf + SVS, the surface component of GEM-Hydro) open-loop runs with the SVS calibrated parameters obtained during GRIP-E project. For more information on the model and on calibration methodology, see GEM-Hydro section in Mai et al. 2020 (in prep.).

The original model outputs had all variables accumulated for each day. During post-processing all variables have been de-accumulated by subtracting the accumulation of the previous hour from the accumulation of the current hour. Two variables (ALAT and O1) are also only valid over the land tile of each grid cell. Two additional variables (ALAT_full and O1_full) valid now over the whole grid cell have been added for convenience of the users.

Domain boundaries (WGS84 system): 
- lon_min = -85.5, lon_max = -77.94
- lat_min = 40.3, lat_max = 44.26

Resolution of model variables provided:
- spatial: ~10km x 10km 
- temporal: hourly 

Simulation period:
- 01 Jan 2011 - 31 Dec 2014 
- 01 Jan 2010 - 31 Dec 2010 (warm-up)

Meteorological input data:
- RDRS-v1; see Mai et al. 2020 (in prep)

Variables available:
float PR_0(time, rlat, rlon) ;
                  PR_0:units = "m" ;
                  PR_0:long_name = "Quantity of precipitation (valid over whole grid cell)" ;
float AHFL_0(time, rlat, rlon) ;
                  AHFL_0:units = "mm" ;
                  AHFL_0:long_name = "Surface evaporation (valid over whole grid cell)" ;
float TRAF_60268832(time, rlat, rlon) ;
                  TRAF_60268832:units = "mm" ;
                  TRAF_60268832:long_name = "Surface runoff (valid over whole grid cell)" ;
float ALAT_0(time, rlat, rlon) ;
                  ALAT_0:units = "mm" ;
                  ALAT_0:long_name = "Accumulation of total soil lateral flow (valid over land tile of grid cell)" ;
float ALAT_0_full(time, rlat, rlon) ;
                  ALAT_0_full:units = "mm" ;
                  ALAT_0_full:long_name = "Accumulation of total soil lateral flow (valid over whole grid cell)" ;
float O1_0(time, rlat, rlon) ;
                  O1_0:units = "mm" ;
                  O1_0:long_name = "Accumulation of base drainage (valid over land tile of grid cell)" ;
float O1_0_full(time, rlat, rlon) ;
                  O1_0_full:units = "mm" ;
                  O1_0_full:long_name = "Accumulation of base drainage (valid over whole grid cell)" ;
float WT_59868832(time, rlat, rlon) ;
                  WT_59868832:units = "1" ;
                  WT_59868832:long_name = "Fraction of grid cell covered with land" ;

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These data and model runs have been performed under the Great Lakes Runoff Inter-comparison Project for Lake Erie (GRIP-E) led by Juliane Mai and Bryan Tolson (both University of Waterloo) and funded under the Integrated Modelling Program for Canada (IMPC) within the Global Water Futures program.