We are revising my text *Physical Hydrology* and are hoping to find
an empirically-supported relation between the liquid water-holding capacity
of ripe snow and snow density that is valid at low densities. The relation given
in the current (2nd) edition is based on measurements at the Central Sierra
Snow Lab in the 1950s, and the data are only for densities above 0.43
kg/m^3:

theta-ret = 2.67E-4*(rho-s/rho-w)^2 -
7.35E-2*(rho-s/rho-w)

where theta-ret is the ratio of liquid water content to porosity, rho-s is
snow density (kg/m^3), and rho-w is water density (kg/m^3) [Eqn. (5-15), Fig.
5-20 of the text].

We have not found any other data. We can extrapolate the relation to
lower densities, but are hoping some Cryolister knows of a study that extends to
lower densities.

Thanks for any help!

Larry Dingman

S. Lawrence Dingman

Professor of Earth Sciences Emeritus

University
of New Hampshire

670 Massasoit Road

Eastham, MA 02642

508-240-3986

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