ssd2rad: Estimate Global Radiation from Measured Sunshine Duration...

In marelac: Tools for Aquatic Sciences

Estimate Global Radiation from Measured Sunshine Duration Time

Description

The function converts values of sunshine duration (in hours) to global radiation (in J m^{-2} s^{-1}).

Usage

ssd2rad(S, doy, a = 0.25, b = 0.5, rho = 50.29)

Arguments

S	Sunshine duration (hours)
doy	Julian day (for northern hemisphere only)
a, b, rho	site specific conversion parameters, must be fitted to measured data.

Value

Estimated value of global radiaton in J m^{-2} s^{-1}.

Note

Don't forget to fit the function parameters to site specific values!

References

Dyck S and Peschke G., 1995. Grundlagen der Hydrologie. 3. Auflage. Verlag f?r Bauwesen, Berlin 1995, ISBN 3-345-00586-7.

See Also

coriolis, viscosity, diffcoeff, vertmean, gravity

Examples

ssd2rad(8, 120)

marelac documentation built on Sept. 25, 2023, 5:06 p.m.