Forecast and observations are stored in the ./input/ directory. Each input source has its
own directory. In addition to data files, these directories also contain metadata about the input
source.
An input source has the following dimesions:
| Dimension | Description | Specified by |
|---|---|---|
| Location | Geographical locations | locations.nl* |
| Offset | Time since model initialization | namelists/*/schemes.nl |
| Date | Initialization date | filename |
| Init | Initialization hour (e.g. 00 UTC, 06 UTC) | filename |
| Member | Ensemble member | members.nl |
| Variable | E.g. temperature, wind speed, humidity | variables.nl |
locations.nl file contains latitude and longitude information for all locations in
the dataset:
0 code=YVR lat=49.1955 lon=-123.1778 elev=0
1 code=YYJ lat=48.6401 lon=-123.4291 elev=0Latitude and longitude are required. Elevation is optional, although certain post-processing schemes use the locations' elevations.
tutFcst class=InputFlat folder=tutFcst type=forecast useCodeInFilename fileExtension=txt offsets=0,12,24This tells COMPS that the input has three leadtimes: 0 hours, 12 hours, and 24 hours.
variables.nl file defines how each variable in the dataset maps to COMPS internal
variables.
T name=SurfaceTemperature
This tells COMPS that the variable SurfaceTemperature is of type T. COMPS internal variables are
defined in namelists/default/variables.nl.
| Option | Purpose |
|---|---|
| Use existing data | Test the performance of new methods |
| Use existing format | |
| Create new format |
| File | Purpose |
|---|---|
data/ | contains data files |
variables.nl | Maps variables |