area of 1° by 1° around the center point of 48° North and 048° West was designated as the study 

 region, which falls within HP's AOR. 



In an effort to model iceberg deterioration using reasonable environmental-forcing values, 

 we selected climatological data from the Wind and Wave Climate Atlas (MacLaren Plansearch 

 Limited, 1991). Parameter ranges were selected so that the mean values, as well as minimum and 

 maximum values found during a complete ice season, were modeled. Other variables such as 

 wind and current, which do not have a direct modeled effect on melt, were not taken into account 

 for these runs. The waterline lengths modeled for growler, small, medium, and large icebergs had 

 starting lengths of 7.5m, 35m, 90m, and 170m, respectively. These lengths were determined by 

 selecting the middle of each iceberg-size classification group given by International Ice Patrol 

 (2004). 



A parametric study was constructed in an effort to model the effect of environmental 

 variables on deterioration. The study held constant (or did not consider) any variables that did not 

 impact melt. The same environmental conditions were used in both models to allow for direct 

 comparison of the outputs. The environmental values used for the 33 runs done on growler, small, 

 medium, and large icebergs are shown in Table 1 . Since the WIMs can run multiple iceberg melts 

 at one time, all four were put in the same parameter file, each being one-half degree to the north, 

 south, east, and west of the center of the study area. 



The WIM-limits model runs to a maximum of ten days with values computed at six-hour 

 intervals. This ten-day limitation forced operator intervention, so that resultant percent melt and 

 remaining lengths from one run could be made the starting values of the next run. All parameter 

 files and model-run outputs were saved. 



Table 1: The environmental parameters used on growler, small, medium, and large 

 icebergs. 



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