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Metadata Input
A collection of site descriptors and variables are required for the processing of the CRNS data.
Below shows the list of metadata variables included in the templates.
| NAME | UNITS | DESCRIPTION | REQUIRED |
|---|---|---|---|
| COUNTRY | - | Country code for location of site | Yes |
| SITENUM | - | Assigned number for site | Yes |
| INSTALL_DATE | - | Date of site installation | No |
| LONGITUDE | degrees | Longitude of site | Yes |
| LATITUDE | degrees | Latitude of site | Yes |
| ELEV | m | Elevation of site above sea level | Yes |
| TIMEZONE | - | Timezone of the site | No |
| RC | gv | Cutoff Rigidity of the site | No |
| LW | % (0:1) | Percent Lattice Water from site specific calibration data (as a number between 0 and 1) | Yes |
| SOC | % (0:1) | Percent Soil Organic Carbon from site specific calibration data (as a number between 0 and 1) | Yes |
| BD | g/cm3 | Bulk Density from site specific calibration data | Yes |
| N0 | - | Theoretic maximum neutron count for site (dry conditions) | Yes |
| AGBWEIGHT | kg/m2 | Live woody above ground biomass estimates from ECMWF biomass data | No |
| BETA_COEFF | - | Store of the calculated beta coefficient (see pressure calculations) for each individual site | Yes |
| REFERENCE_PRESS | mb | Reference pressure calculated using elevation | Yes |
| RAW_DATA_FILEPATH | - | Filepath of the raw data | Yes |
| MAX_PRECIPITATION | mm | Maximum value of precipitation. Values above this are cut off | No |
| SM_MAX | cm3/cm3 | Maximum value of SM. Values above this are cut off | No |
Additional Info
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Unlike CRSPY, CRSPY_lite requires the N0 value, used to calibrate the data, to be a user input. If no N0 value available, try the relevent CRNS network website to retrieve one.
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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.