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:

.. code:: console

   /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 <##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:

.. list-table:: Variable Information
   :header-rows: 1

   * - 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 temperature @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\ :sup:`-2` s\ :sup:`-1`
     -
     - Mean rainfall rate over the previous 3 hours
   * - short wave radiation
     - rsds
     - W m\ :sup:`-2`
     - rsds
     - Mean surface incident shortwave radiation over the previous 3 hours
   * - long wave radiation
     - lsds
     - W m\ :sup:`-2`
     - rlds
     - Mean surface incident longwave radiation over the previous 3 hours