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| 1 | +ECCC ``CaSR`` v3.1 |
| 2 | +================== |
| 3 | + |
| 4 | +In this file, the details of the dataset is explained. |
| 5 | + |
| 6 | +Location of Dataset Files |
| 7 | +------------------------- |
| 8 | + |
| 9 | +The ``CaSR`` v3.1 dataset is located under the following directories |
| 10 | +accessible from multiple clusters listed below: |
| 11 | + |
| 12 | +.. code:: console |
| 13 | +
|
| 14 | + # DRAC Graham cluster |
| 15 | + /project/def-kshook/Climate_Forcing_Data/meteorological-data/casrv3.1 # def-kshook allocation |
| 16 | +
|
| 17 | + # UCalgary ARC cluster |
| 18 | + /work/comphyd_lab/data/meteorological-data/casrv3.1 # comphyd_lab allocation |
| 19 | +
|
| 20 | +and the structure of the dataset hourly files is as following: |
| 21 | + |
| 22 | +.. code:: console |
| 23 | +
|
| 24 | + /project/rpp-kshook/Model_Output/CaSRv3.1 |
| 25 | + ├── 1979123112.nc |
| 26 | + ├── 1980010112.nc |
| 27 | + ├── 1980010212.nc |
| 28 | + ├── 1980010312.nc |
| 29 | + ├── . |
| 30 | + ├── . |
| 31 | + ├── . |
| 32 | + ├── %Y010112.nc |
| 33 | + ├── . |
| 34 | + ├── . |
| 35 | + ├── %Y%m%d12.nc |
| 36 | + ├── . |
| 37 | + ├── . |
| 38 | + ├── %Y123112.nc |
| 39 | + ├── 2023010112.nc |
| 40 | + ├── . |
| 41 | + ├── . |
| 42 | + ├── . |
| 43 | + └── 2023123012.nc |
| 44 | +
|
| 45 | +Coordinate Variables and Time-stamps |
| 46 | +------------------------------------ |
| 47 | + |
| 48 | +Coordinate Variables |
| 49 | +~~~~~~~~~~~~~~~~~~~~ |
| 50 | + |
| 51 | +The coordinate variables of the ``CaSRv3.1`` simulations are ``lon`` and |
| 52 | +``lat`` representing the longitude and latitude data, respectively. |
| 53 | + |
| 54 | +Variable Time-stamps |
| 55 | +-------------------- |
| 56 | + |
| 57 | +Time-stamps The time-stamps are included in the original files. |
| 58 | + |
| 59 | +Dataset Variables |
| 60 | +----------------- |
| 61 | + |
| 62 | +The NetCDF files of the dataset contain 38 variables. You may see a list |
| 63 | +of variables by using the ``ncdump -h`` command on one of the files: |
| 64 | + |
| 65 | +.. code:: console |
| 66 | +
|
| 67 | + foo@bar:~$ ncdump -h /path/to/dataset/files/casrv3.1/2018010112.nc |
| 68 | +
|
| 69 | +Spatial Extent |
| 70 | +-------------- |
| 71 | + |
| 72 | +The spatial extent of the ``CaSR`` v3.1 is on latitudes from ``+7.75`` |
| 73 | +to ``+84.75`` and longitudes from ``-179.9925`` to ``179.9728`` covering |
| 74 | +North America. The resolution is 0.09 degrees (~10km). |
| 75 | + |
| 76 | +Temporal Extent |
| 77 | +--------------- |
| 78 | + |
| 79 | +The time-steps are hourly covering from ``January 1980`` to |
| 80 | +``December 2023``. |
| 81 | + |
| 82 | +Short Description on ``CaSR`` v3.1 Variables |
| 83 | +-------------------------------------------- |
| 84 | + |
| 85 | +In most hydrological modelling applications, usually 7 variables are |
| 86 | +needed detailed as following: 1) specific humidity, 2) surface pressure, |
| 87 | +3) air temperature, 4) wind speed, 5) precipitation (surface level), 6) |
| 88 | +downward short wave radiation (surface level), and 7) downward long wave |
| 89 | +radiation (surface level). These variables are available through |
| 90 | +``CaSR`` v3.1 dataset and their details are described in the table |
| 91 | +below: |
| 92 | + |
| 93 | +.. list-table:: Variable Mapping |
| 94 | + :widths: 30 30 10 30 |
| 95 | + :header-rows: 1 |
| 96 | + |
| 97 | + * - Variable Name |
| 98 | + - CaSRv3.1 Variable |
| 99 | + - Unit |
| 100 | + - Comments |
| 101 | + * - surface pressure |
| 102 | + - CaSR_v3.1_P_P0_SFC |
| 103 | + - ``mb`` |
| 104 | + - |
| 105 | + * - air temperature @20m |
| 106 | + - CaSR_v3.1_P_TT_09975 |
| 107 | + - ``°C`` |
| 108 | + - |
| 109 | + * - air temperature @1.5m |
| 110 | + - CaSR_v3.1_P_TT_1.5m |
| 111 | + - ``°C`` |
| 112 | + - |
| 113 | + * - wind speed U-component @20m |
| 114 | + - CaSR_v3.1_P_UUC_09975 |
| 115 | + - ``kts`` |
| 116 | + - Corrected U-component along West-East direction at ~20m |
| 117 | + * - wind speed U-component @10m |
| 118 | + - CaSR_v3.1_P_UUC_10m |
| 119 | + - ``kts`` |
| 120 | + - Corrected U-component along West-East direction at ~10m |
| 121 | + * - wind speed V-component @20m |
| 122 | + - CaSR_v3.1_P_VVC_09975 |
| 123 | + - ``kts`` |
| 124 | + - Corrected V-component along South-North direction at ~20m |
| 125 | + * - wind speed V-component @10m |
| 126 | + - CaSR_v3.1_P_VVC_10m |
| 127 | + - ``kts`` |
| 128 | + - Corrected V-component along South-North direction at ~10m |
| 129 | + * - wind modulus @20m |
| 130 | + - CaSR_v3.1_P_UVC_09975 |
| 131 | + - ``kts`` |
| 132 | + - Forecast: Wind Modulus (derived using UU and VV) at 20m |
| 133 | + * - wind modulus @10m |
| 134 | + - CaSR_v3.1_P_UVC_10m |
| 135 | + - ``kts`` |
| 136 | + - Forecast: Wind Modulus (derived using UU and VV) at 10m |
| 137 | + * - precipitation |
| 138 | + - CaSR_v3.1_A_PR0_SFC |
| 139 | + - ``m/hr`` |
| 140 | + - Analysis: Quantity of precipitation (CaPA 24h disaggregated hourly) at surface |
| 141 | + * - short wave radiation |
| 142 | + - CaSR_v3.1_P_FB_SFC |
| 143 | + - ``W m-2`` |
| 144 | + - Downward solar flux at the surface |
| 145 | + * - long wave radiation |
| 146 | + - CaSR_v3.1_P_FI_SFC |
| 147 | + - ``W m-2`` |
| 148 | + - Downward infrared flux at the surface |
| 149 | + * - specific humidity @20m |
| 150 | + - CaSR_v3.1_P_HU_09975 |
| 151 | + - 1 |
| 152 | + - Specific humidity at ~20m (0.997502 hy) |
| 153 | + * - specific humidity @1.5m |
| 154 | + - CaSR_v3.1_P_HU_1.5m |
| 155 | + - 1 |
| 156 | + - Specific humidity at ~1.50m |
| 157 | + |
| 158 | +Other useful variables in hydrological modelling evaluations are: |
| 159 | + |
| 160 | +.. list-table:: Snow and Precipitation Variables |
| 161 | + :widths: 35 30 10 25 |
| 162 | + :header-rows: 1 |
| 163 | + |
| 164 | + * - Variable Name |
| 165 | + - CaSRv3.1 Variable |
| 166 | + - Unit |
| 167 | + - Comments |
| 168 | + * - Water equivalent of snow cover |
| 169 | + - CaSR_v3.1_P_SWE_LAND |
| 170 | + - ``kg m-2`` |
| 171 | + - Water equivalent of snow cover at land surface subgrid tile |
| 172 | + * - Snow depth |
| 173 | + - CaSR_v3.1_P_SD_LAND |
| 174 | + - ``cm`` |
| 175 | + - Snow depth at land surface subgrid tile |
| 176 | + * - Freezing precipitation |
| 177 | + - CaSR_v3.1_P_FR0_SFC |
| 178 | + - ``m`` |
| 179 | + - Quantity of freezing precipitation (liquid water equivalent) at surface |
| 180 | + * - Geopotential height |
| 181 | + - CaSR_v3.1_P_GZ_09975 |
| 182 | + - ``dam`` |
| 183 | + - Geopotential height at ~20m (0.997502 hy) |
| 184 | + * - Geopotential height |
| 185 | + - CaSR_v3.1_P_GZ_SFC |
| 186 | + - ``dam`` |
| 187 | + - Geopotential height at the surface |
| 188 | + * - Liquid precipitation |
| 189 | + - CaSR_v3.1_P_RN0_SFC |
| 190 | + - ``m`` |
| 191 | + - Forecast: Quantity of liquid precipitation at surface |
| 192 | + * - Meteorological wind direction |
| 193 | + - CaSR_v3.1_P_WDC_09975 |
| 194 | + - ``degree`` |
| 195 | + - Forecast: Meteorological wind direction (derived using UU and VV) at ~20m (0.997502 hy) |
| 196 | + * - Meteorological wind direction |
| 197 | + - CaSR_v3.1_P_WDC_10m |
| 198 | + - ``degree`` |
| 199 | + - Forecast: Meteorological wind direction (derived using UU and VV) at ~10m |
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