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README.md

ECCC RDRS v2.1

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

Location of Dataset Files

The RDRS v2.1 dataset is located under the following directory accessible from Compute Canada (CC) Graham Cluster:

/project/rpp-kshook/Climate_Forcing_Data/meteorological-data/rdrsv2.1 # rpp-kshook allocation
/project/rrg-mclark/data/meteorological-data/rdrsv2.1 # rrg-mclark allocation

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

/project/rpp-kshook/Model_Output/RDRSv2.1
├── 1980
│   ├── 1980010112.nc
│   ├── 1980010212.nc
│   ├── 1980010312.nc
│   ├── .
│   ├── .
│   ├── .
│   └── 1980123112.nc
.
.
.
├── %Y
│   ├── %Y010112.nc
│   ├── .
│   ├── .
│   ├── %Y%m%d12.nc
│   ├── .
│   ├── .
│   └── %Y123112.nc
.
.
.
└── 2018
    ├── 2018010112.nc
    ├── .
    ├── .
    ├── .
    └── 2018123112.nc

Coordinate Variables and Time-stamps

Coordinate Variables

The coordinate variables of the ERA5 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 NetCDF files of the dataset contain 28 variables. You may see a list of variables by using the ncdump -h command on one of the files:

foo@bar:~$ module load cdo/2.0.4
foo@bar:~$ module load nco/5.0.6
foo@bar:~$ ncdump -h /project/rpp-kshook/Model_Output/RDRSv2.1/1980/1980010112.nc

Spatial Extent

The spatial extent of the RDRS v2.1 is on latitutes from +5.75 to +64.75 and longitudes from -179.9925 to 179.9728 covering North America. The resolution is 0.09 degrees (~10km).

Temporal Extent

The time-steps are hourly covering from January 1980 to December 2018.

Short Description on RDRS v2.1 Variables

In most hydrological modelling applications, usually 7 variables are needed detailed as following: 1) specific humidity (@1.5-2.0m or @40m), 2) surface pressure, 3) air temperature (@1.5m-2.0m or 40m), 4) wind speed (@10m or @40m), 5) precipitation (surface level), 6) downward short wave radiation (surface level), and 7) downward long wave radiation (surface level). These variables are available through RDRS v2.1 dataset and their details are described in the table below:

Variable Name RDRSv2.1 Variable Unit IPCC abbreviation Comments
surface pressure RDRS_v2.1_P_P0_SFC mb ps
specific humidity@1.5m RDRS_v2.1_P_HU_1.5m 1 huss
air tempreature @1.5m RDRS_v2.1_P_TT_1.5m °C tas
wind speed @10m RDRS_v2.1_P_UVC_10m kts wspd WIND=SQRT(U102+V102)
precipitation RDRS_v2.1_A_PR0_SFC m/hr CaPA outputs
short wave radiation RDRS_v2.1_P_FB_SFC W m-2 rsds Downward solar flux
long wave radiation RDRS_v2.1_P_FI_SFC W m-2 rlds Downward infrared flux
specific humidity @40m RDRS_v2.1_P_HU_09944 1 huss
air temperature @40m RDRS_v2.1_P_TT_09944 °C tas
wind speed @40m RDRS_v2.1_P_UVC_09944 kts wspd

Please visit the official website for the dataset for the most up-to-date information.