ccrn-wfdei_gem_capa

CCRN WFDEI-GEM-CaPA

In this file, the details of the dataset is explained.

Location of Dataset Files

The WFDEI-GEM-CaPA dataset is located under the following directory accessible from Digital Alliance of Canada (formerly Compute Canada) Graham cluster:

/project/rpp-kshook/Model_Output/181_WFDEI-GEM-CaPA_1979-2016

and the structure of the dataset hourly files is as following:

/project/rpp-kshook/Model_Output/181_WFDEI-GEM-CaPA_1979-2016
├── hus_WFDEI_GEM_1979_2016.Feb29.nc
├── pr_WFDEI_GEM_1979_2016.Feb29.nc
├── ps_WFDEI_GEM_1979_2016.Feb29.nc
├── rlds_WFDEI_GEM_1979_2016.Feb29.nc
├── rsds_WFDEI_GEM_1979_2016.Feb29.nc
├── ta_WFDEI_GEM_1979_2016.Feb29.nc
└── wind_WFDEI_GEM_1979_2016.Feb29.nc

Coordinate Variables and Time-stamps

Coordinate Variables

The coordinate variables of the WFDEI-GEM-CaPA simulations are lon and lat representing the longitude and latitude points, respectively.

Time-stamps

The time-stamps are included in the original files.

Dataset Variables

The list of variables included in the dataset is descriped in Short Description on Dataset Variables

Spatial Extent

The spatial extent of the dataset is on latitutes from 31.0625 to 71.9375 and longitudes from -149.9375 to -50.0625 covering North America. The resolution is 0.125 degrees.

Temporal Extent

The time-steps are 3-hourly covering from January 1951 to December 2100.

Short Description on Dataset Variables

In most hydrological modelling applications, usually 7 variables are needed detailed as following: 1) specific humidity at 40 meters, 2) surface pressure, 3) air temperature at 40 meters, 4) wind speed at 40 meters, 5) precipitation, 6) downward short wave radiation, and 7) downward long wave radiation. These variables are available through WFDEI-GEM-CaPA dataset and their details are described in the table below:

Variable Name	Dataset Variable	Unit	IPCC abbreviation	Comments
surface pressure	ps	Pa	ps	surface pressure at time stamp
specific humidity@40m	hus	kg/kg	huss	specific humidity elevated to 40m at time stamp
air tempreature @40m	ta	K	tas	air temperature elevated to 40m at time stamp
wind speed @40m	wind	m/s	wspd	wind speed elevated to 40m at time stamp
precipitation	pr	kg m-2 s-1		Mean rainfall rate over the previous 3 hours
short wave radiation	rsds	W m-2	rsds	Mean surface incident shortwave radiation over the previous 3 hours
long wave radiation	lsds	W m-2	rlds	Mean surface incident shortwave radiation over the previous 3 hour