(the subscript “a” denotes
change over the hydrological year under consideration),
based on the
simulated mass
balance summed over
all the corresponding glaciated elevation
bands or grid
cells. The total glaciated
area, S1, and ice volume, V1, at the
beginning of the year are
assumed
to be known, providing an estimate of the
average ice thickness, h1 = V1=S1. From the scaling
relationship (
5
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