atmospheric_pressure_factor

hydrometlib.cosmos.atmospheric_pressure_factor(pa, barometric_attenuation_length)

Calculate atmospheric pressure correction factor to neutron counts [unitless]

\[f_p = \exp\!\left( \frac{p_a - 1000}{L} \right)\]

where \(L\) is the barometric attenuation length and 1000 hPa the reference pressure.

References

• CRNPy correction factor, Desilets & Zreda, 2003: https://doi.org/10.1016/S0012-821X(02)01088-9

• Zreda et al. (2012) HESS https://doi.org/10.5194/hess-16-4079-2012

• Bogena et al. (2022): https://doi.org/10.5194/essd-14-1125-2022

Parameters:

• pa (Expr) – Atmospheric pressure [hPa]

• barometric_attenuation_length (Expr) – Site attribute - barometric attenuation length, L [hPa]. Must be in the same units as pa, since the exponent is (pa - 1000) / L.

Return type:

Expr

Returns:

Expression or Series for atmospheric pressure factor [unitless]