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Metadata Input
To run crspy-lite (and process CRNS data more broadly) a collection of site descriptors and variables are required. In crspy-lite these are requested to be inputted by the user when the tool is first run. After this they are coverted to and stored in a config.json file, which can be found in "\your-folder\inputs\config.json". Note that not all variables are required. For example some can be calculated within crspy-lite or are included to define limits for different variables: such as rainfall. Please use the table below to view what these variables are, what they do and if they are required:
| NAME | UNITS | DESCRIPTION | REQUIRED |
|---|---|---|---|
| COUNTRY | - | Country code for location of site | Yes |
| SITENUM | - | Assigned number for site | Yes |
| SITENAME | - | Name of site | Yes |
| INSTALL_DATE | - | Date of site installation | No |
| LATITUDE | degrees | Latitude of site. Values in range -90 to 90 | Yes |
| LONGITUDE | degrees | Longitude of site. Values in range from 0 to 360 | Yes |
| ELEV | m | Elevation of site above sea level | Yes |
| TIMEZONE | - | Timezone of the site | No |
| RC | gv | Cutoff Rigidity of the site | No - crspy-lite can calculate this |
| LW | % (0:1) | Percent Lattice Water (as a number between 0 and 1) | Yes |
| SOC | % (0:1) | Percent Soil Organic Carbon (as a number between 0 and 1) | Yes |
| BD | g/cm3 | Bulk Density | Yes |
| BETA_COEFF | - | Store of the calculated beta coefficient for each individual site | No - crspy-lite can calculate this |
| REFERENCE_PRESS | mb | Reference pressure | Yes |
| N0 | - | Theoetical neutron count for absolute dry soil conditions | No - but must otherwise supply a calibration dataset so crspy-lite can calculate this |
| PRECIP_MAX | mm | Maximum value of hourly precipitation. Values above this are removed | No - optional limit |
| SM_MAX | cm3/cm3 | Maximum value of hourly soil moisture. Values above this are removed | No - optional limit |
| FIELD_CAPACITY | cm3/cm3 | The amount of soil moisture or water content held in the soil after excess water has drained away | No - optional visualisation parameter |
| WILTING_POINT | cm3/cm3 | The amount of water that is held so tightly by the soil matrix that roots cannot absorb it and plants will wilt | No - optional visualisation parameter |
During the first time you run crspy-lite you will also be prompted to input time series data, known as "raw data". Crspy-lite can accomodate .txt and .csv files by reading a filepath, as well as data from online sources by reading a URL. Therefore you must either provide a filepath or a URL of your input data. You can also input a filepath of calibration data, if you wish to use crspy-lite to calibrate your site. The table below summarises the three inputs:
| NAME | DESCRIPTION | REQUIRED |
|---|---|---|
| RAW_DATA_FILEPATH | File path of input timeseries data from the CRNS | Must provide either a RAW_DATA_FILEPATH OR RAW_DATA_URL |
| RAW_DATA_URL | URL of input timeseries data from the CRNS | Must provide either a RAW_DATA_FILEPATH OR RAW_DATA_URL |
| CALIB_DATA_FILEPATH | File path of Calibration data | Required if no N0 number is given (see table above) |
Click on the links for further details on the required format of the Input Timeseries Data of the Calibration Data.
Additional Info
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http://www.crnslab.org/ is a great resource. It is especially useful in finding site specific cut-off rigidity (RC) if it is not already available in data.
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Note that the metadata variable 'AGBWEIGHT', used to compute the static biomass correction defined by Baatz et al. (2015), is not used in the current version of CRSPY_lite. Also note the inputs 'MAX_PRECIPITATION’, and ‘SM_MAX' are included so that the user may improve the visualisation of the figures.