YEAR 



Figure 4. — Snow W.E. gains on recovery plot, north slope. 



Water equivalent gains on the south slope recovery plot (fig. 3) averaged a yearly 

 increase of 3.0 in (76 cm) --only 39 percent of that on the opposite slope (table 2). 

 The measured gain in 1974 was slightly greater on the south-slope plot than the average 

 for 1942 through 1952 (fig. 5). These plot gains are about twice those observed at 

 a higher-elevation clearcut of similar size, shape, and slope, though with greater 

 exposure to wind and energy input (Haupt, in press) . 



Physical processes are more severe on the south slope than on the north. However, 

 a porous, less dense tree cover does allow more snowfall to filter through to the ground, 

 and, in addition, sustained wind, often very gusty, tends to blow snow off the canopy 

 and onto the ground below. As a consequence, less canopy-held snow is evaporated/ 

 subl imated . 



7 



