sigma_snow_water_equivalence_snowfox#
- hydrometlib.cosmos.sigma_snow_water_equivalence_snowfox(cts_smo, cts_est)[source]#
Calculate uncertainty in a snow water equivalence (SWE) calculation for a below ground (SnowFox) COSMOS sensor [mm water equivalent]
\[\sigma_{SWE} = \sqrt{ \left( \frac{c}{C_{est}} \right)^2 \frac{C_{smo}}{24} + \left( \frac{-c \, C_{smo}}{C_{est}^2} \right)^2 \sigma_{N_0}^2 }\]with \(c = -157\) (estimated from the 0-30 mm portion of the Howat et al. 2018 attenuation curve) and \(\sigma_{N_0} = 16\).
References
- Wallbank J. R., Cole S. J., Moore R. J., Anderson S. R., Mellor E. J. (2020),
Estimating snow water equivalent using cosmic-ray neutron sensors from the COSMOS-UK network, Hydrological Processes, 35(5), e14048. https://doi.org/10.1002/hyp.14048
- Howat, I. M., de la Peña, S., Desilets, D., & Womack, G. (2018).
Autonomous ice sheet surface mass balance measurements from cosmic rays. The Cryosphere, 12, 2099-2108. https://doi.org/10.5194/tc-12-2099-2018
- Parameters:
cts_smo (
Expr) – Smoothed neutron counts from snowfox sensor, corrected for influences on cosmic-ray intensity [counts h-1]cts_est (
Expr) – Estimated counts during snow periods from snowfox sensor [counts h-1]
- Return type:
Expr- Returns:
Expression or Series for SWE uncertainty [mm water equivalent]