Description Usage Arguments Value Author(s) References See Also Examples
The Schmidt number as a function of temperature (0-30dgC) and for a salinity of 35.
Sc = v/D = Mu/(rho+D)
where v is the kinematic viscosity of the water and D is the mass diffusivity, rho is density and mu is the viscosity.
Schmidt numbers are used to estimate the gas transfer velocity.
1 2 3
gas_schmidt(t = 25, species = c("He", "Ne", "N2", "O2", "Ar", "Kr", "Rn", "CH4","CO2", "N2O", "CCl2F2", "CCL3F", "SF6", "CCl4"))
Temperature in degrees C,
character vector with gasses whose schmidt number should be estimated.
The Schmidt number, a dimensionless quantity.
Karline Soetaert <email@example.com>
Sarmiento JL and Gruber N, 2006. Ocean Biogeochemical Dynamics. Princeton University Press, Princeton. p 85.
Wanninkhof R, 1992. Relationship between wind speed and gas exchange over the ocean. Journ. Geophys. Res. 97, 7373-7383.
except for O2:
Keeling et al., 1998. Seasonal variation in the atmospheric O2/N2 ratio in relation to the kinetics of air-sea gas exchange. Global Biogeochemical Cycles 12, 141-164.
CFC-11 (CCl2F2), and CFC-12 (CCl3F):
Zheng et al., 1998. Measurements of the diffusion coefficients of CF-11 and CF-12 in pure water and seawater. Journ. Geophys. Res. 103, 1375-1379.
and CCl3 (Wanninkhof, pers.comm).
gas_schmidt(species = "CO2", t = 20) # about660
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