maximum_unfrozen_water

Author:

Keith Cherkauer

Date:

September 2, 1997

Description:

This subroutine computes the maximum unfrozen water content of the current soil node. Not all soil water is frozen when the soil temperature falls below 0C, but the fraction that is increases with decreasing soil temperature. This routine returns the fraction of the node's maximum water content that will remain unfrozen at the current temperature.

References

Flerchinger, G. N., and K. E. Saxton, "Simultaneous Heat and Water Model of a Freezing Snow-Residue-Soil System: I. Theory and Development," Transactions of the ASCE, Vol. 32, No. 2, March-April 1989.

Input Variables:

Variable	Type	Units	Description
T	double	C	Temperature of current soil node
max_moist	double	mm or m^3/m^3	Maximum water content of current soil node
bubble	double	cm	Bubbling pressure of current soil node
expt	double	N/A	EXPT of current soil node

Output Variables:

Variable	Type	Units	Description
unfrozen	double	mm or m^3/m^3	Maximum unfrozen water content of current soil node

Subroutines Called:

Modifications and Limitations

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