neutron_intensity_factor

hydrometlib.cosmos.neutron_intensity_factor(crns_count, ref_c0, gamma)

Calculate incoming neutron count intensity correction factor using a background reference station [unitless]

\[f_{inten} = \frac{1}{\gamma \left( \dfrac{C}{C_0} - 1 \right) + 1}\]

where \(C\) is crns_count and \(C_0\) is ref_c0.

References

• “COSMOS: the Cosmic-ray Soil Moisture Observing System” https://hess.copernicus.org/articles/16/4079/2012/

• “Intensity correction factors for a cosmic ray neutron sensor”: https://zenodo.org/records/4569062

• COSMOS-UK supporting information: https://doi.org/10.5285/2dce161d-2fab-47bb-9fe6-38e7ed1ae18a

Parameters:

• crns_count (Expr) – Neutron counts from the reference neutron monitor, as a count rate over the same interval as ref_c0 [e.g. counts h-1]. Only the ratio crns_count / ref_c0 is used, so any count rate works provided ref_c0 shares it.

• ref_c0 (Expr) – Site attribute - scaling reference for the neutron counts, on the same count rate as crns_count [e.g. counts h-1]

• gamma (Expr) – Site attribute - scaling factor to adjust for geomagnetic effects [unitless]

Return type:

Expr

Returns:

Expression or Series for incoming neutron count intensity factor [unitless]