SLF Snow Sensor 40/40 – snow-sen

SLF SnowPro-4040

The SLF SnowPro-4040 is using the same dimension and structure as the probes originally designed and studied by A. Denoth . He obtained relations between permittivity 𝜖 and snow density 𝜌 and liquid water content LWC that are well accepted in the researcher community. For snow profiles which are clearly below 0°C the density of dry snow ρdry is calculated using the inversion of following empirical formula (Denoth, 1989):

ρ [k g / m 3] = \frac{1000}{0.88} \times (- 1.92 + \sqrt{{1.92}^{2} - 4 \times 0.44 (1 - ϵ)})

For temperatures above 0°C LWC is calculated using below empiric formula (Denoth, 1989), including the average dry snow density 𝜌dry:

L W C [v o l . %] = \frac{- 0.206}{0.0092} \times \frac{\sqrt{{0.206}^{2} - 4 \times 0.046 \times (0.44 \times ρ^{2} + 1.92 \times \frac{ρ}{1000} + 1 - ϵ)}}{{0.092}^{2}}

SENSOR SPECIFICATION