stability.correction: Integrated Stability Correction Functions for Heat and...

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Integrated Stability Correction Functions for Heat and Momentum

Description

dimensionless stability functions needed to correct deviations from the exponential wind profile under non-neutral conditions.

Usage

stability.correction(zeta, formulation = c("Dyer_1970", "Businger_1971"))

Arguments

zeta	Stability parameter zeta (-)
formulation	Formulation for the stability function. Either "Dyer_1970", or "Businger_1971"

Details

The functions give the integrated form of the universal functions. They depend on the value of the stability parameter ζ, which can be calculated from the function stability.parameter. The integration of the universal functions is:

ψ = -x * zeta

for stable atmospheric conditions (ζ >= 0), and

ψ = 2 * log( (1 + y) / 2)

for unstable atmospheric conditions (ζ < 0).

The different formulations differ in their value of x and y.

Value

a data.frame with the following columns:

psi_h	the value of the stability function for heat and water vapor (-)
psi_m	the value of the stability function for momentum (-)

References

Dyer, A.J., 1974: A review of flux-profile relationships. Boundary-Layer Meteorology 7, 363-372.

Dyer, A. J., Hicks, B.B., 1970: Flux-Gradient relationships in the constant flux layer. Quart. J. R. Meteorol. Soc. 96, 715-721.

Businger, J.A., Wyngaard, J. C., Izumi, I., Bradley, E. F., 1971: Flux-Profile relationships in the atmospheric surface layer. J. Atmospheric Sci. 28, 181-189.

Paulson, C.A., 1970: The mathematical representation of wind speed and temperature profiles in the unstable atmospheric surface layer. Journal of Applied Meteorology 9, 857-861.

Foken, T, 2008: Micrometeorology. Springer, Berlin, Germany.

Examples

zeta <- seq(-2,0.5,0.05)
stability.correction(zeta)
stability.correction(zeta,formulation="Businger_1971")                          
            

bigleaf documentation built on Aug. 22, 2022, 9:09 a.m.