as average monthly meteorological conditions in the area becc>me 

 known. 



11. For a more accurate forecast, another survey can be made in 

 late February or early March north to Hudson Strait entrance. Bergs 

 north of 57° N. in mid-March 1963 did not survive to the Grand Banks 

 under unfavorable meteorological conditions. With normal meteoro- 

 logical conditions, it is concluded that bergs north to at least Hudson 

 Strait entrance will be a factor. An estimated 30 percent of this berg 

 count can be forecast to survive to south of 48° N. The forecast can 

 be modified if the berg distribution, berg sizes, or other factors so 

 indicate. 



SUMMARY 



The special northern iceberg survej^ flights conducted in January and 

 March 1963 supplemented with information from Canadian Depart- 

 ment of Transport flights in the autumn of 1961 and 1962 and the 

 Ice Patrol ice observation flights have been very useful in helping to 

 establish certain facts regarding berg counts, traveltimes, drift rates, 

 survival rates, and also the location at certain times and the potential 

 of the annual berg crop. The determinations are based on data for 

 only the 1962 and 1963 ice seasons, and considerable variation can be 

 expected from year to year. However, as iceberg data are accumu- 

 lated and correlated with all available and pertinent meteorological 

 and oceanographic factors, certain generalizations can be made re- 

 garding the location and extent of the berg crop, the traveltimes, 

 and survival rates, and the capability will develop to fairly accurately 

 forecast the severity of the iceberg season for the Grand Banks before 

 the season starts. 



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