Input Calibration Data

To process CRNS data you need to calibrate your site. This involves determining a single N0 number (doesn't change with time). For information on the theory of calibration and the method used in crspy-lite click here.

If you have already determined an N0 number for your site, you can input this directly into crspy-lite as part of the metadata input. Otherwise you must input calibration data so that crspy-lite can calculate N0 for you and process your CRNS neutron counting rate into soil moisture. See below for details on the requirements of this data.

Required Columns

The table below summarises the required variables that comprise the calibration data, denoting the expected column name and unit. Please note that all columns must be the same length. Any gaps in the data should be filled with 'nan' values.

NAME	UNITS	DESCRIPTION
DATE	Date	Date the calibration campaign took place. Typically a single date but crspy-lite can accomodate multiple day calibrations. Format: "dd-mm-yyyy"
PROFILE	Integer	Integer to differentiate soil profiles where a profile is a single core. The core could then have multiple "layers".
DIST	Meters	Distance from the CRNS to each sample.
DEPTH_AVG	Centimeters	The depth of the soil sample for each layer. This should be taken as the mid point of the layer.
SWV	(%)	The volumetric soil moisture of the sample. Should be given as a decimal (i.e. 0.3).