10
1.0
10
8
TEMP
0.5
5
6
0
0
SNOW
4
RAIN
0.5
5
2
1.0
10
0
10
20
30
40
50
60
70
80
90
Time (h)
Figure 12. Behavior of model inputs. This figure shows the behavior of the
meteorological inputs to Object-GAWSER. The inputs represent historic
data taken from page 4-26 of the GAWSER manual (Schroeter 1989).
10
60
TETEMP
MPs
5
40
0
SWC
20
5
LWC
10
0
10
20
30
40
50
60
70
80
90
Time (h)
Figure 13. Behavior of SWC and LWC with respect to TEMPs. SWC remains con-
stant or increases when TEMPs is less than zero and decreases when TEMPs is great-
er than zero. When TEMPs is less than zero from zero to 8 hours, SWC remains con-
stant from zero to eight hours as there is no liquid water contained in the snowpack to
increment SWC. From zero to 43 hours, LWC increases when TEMPs is greater than
zero and decreases when TEMPs is less than zero. After 43 hours, LWC decreases
when TEMPs is greater than zero because the liquid water holding capacity of the
snowpack has been exceeded and liquid water is being released from the snowpack.
Graphical descriptions of SNOMLT
Figures 1217 describe the behavior of the snowpack under the following conditions: the temper-
ature of the pack (TBAS) is 0C, no snowfall, periodic rain, and air temperatures fluctuating above
and below freezing. Figure 12 demonstrates that TEMPs fluctuates about 0C with a maximum near
10C and a minimum near 5C. The greatest fluctuation of TEMPs occurs at 30 hours and causes a
significant decrease in SWC and a significant increase in LWC (Fig. 13). For simplification, SNOWs
is not shown because snowfall is not simulated. Rain fluctuates with a maximum near 5 mm of H2O/
h and a minimum of 0 mm of H2O/h.
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