However, the 1965 included n count of all bergs observed from the 

 Canadian coast to mid-Baffin Bay, while 1964 included only those 

 out to approximately' 90 miles from tlie coast. Restriction to the nar- 

 rower band along the cost would reduce the 1965 comit by some 500 

 bergs. These would be predominantly the medium and large bergs. 

 The greater part, or 684 out of approximately 1,160, would be small 

 bergs. While the difference in count between the two flights pre- 

 cludes any direct comparison, it becomes obvious that small bergs 

 predominated in 1965. On the basis of these flights and assuming 

 that normal meteorological and climatological conditions to prevail 

 through to June 1966, it appears that the 1966 ice season will have a 

 somewhat lower berg count south of latitude 48° N., as greater 

 attrition could be expected amongst the smaller bergs. 



A comparison of the 1964^65 December flights has already been 

 made and indicated a greater percentage of smaller bergs in 1965. 

 In tabulated form, the observations made in 1963-65 for the area 

 south of Cape Dyer show the following existing berg distribution. 



The bergs drifting south of latitude 48° N. in 1964 totaled 369; 

 in 1965, 76. It is forecast that less than half of the 1965 number will 

 drift onto the Grand Banks in 1966, again provided that normal con- 

 ditions prevail. It is the definition of normal conditions that is some- 

 what tenuous, but it is defined as those climatological and meteorologi- 

 cal conditions that determine an "average" ice season. 



If an abnormally favorable climate for berg drift and survival to 

 the Grand Banks prevails the number could be as high as 100 ; if the 

 conditions are unfavorable, as few as 20 would sunave. 



THE CORRELATION BETWEEN WINTER FROST DEGREE DAYS OF SELECTED BAFFIN ISLAND- 

 LABRADOR-NEWFOUNDLAND COASTAL STATIONS AND THE RELATIVE ICEBERG SEVERITY 

 ON THE GRAND BANKS 



The climatology prevailing over the paths traversed by bergs is of 

 extreme importance in determination of environmental conditions. 

 There are many factors which influence berg deterioration and sur- 

 vival enroute to the Grand Banks. These are, in part, the temperature 

 of the air and water, the ice coverage both as to concentration and 

 thickness, sea conditions, incoming radiation, bathymetric contours, 

 and oceanic current circulation. Exclusion of the two latter consid- 

 erations contains the berg survival parameters to essentially those 

 which describe climatolog}'. Due to the scarcity of data available 

 in Baffin Bay and on the Labrador coast, any attempt to establish a 



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