63. Data was supplied by the U.S. Naval Oceanographic Office. 

 FDD's listed are those accumulated for each station from 1 September 

 through 15 March. Warming degree days, or days with average 

 temperatures above 32° F. are not accounted for. Admittedly a more 

 accurate indication of the climate at the stations should allow for de- 

 duction of the warming degree days. While warming degree days 

 are not a factor at the northern stations of Clyde River and Resolution 

 Island during the autumn and winter months, they are a factor at the 

 Labrador-Newfoundland stations. Also, the same periods were used 

 for all stations in computing the accumulated FDD's, including 

 periods of time before the berg crop had arrived and after the crop had 

 passed by a given station. It would probably be more meaningful 

 to compute station FDD's for the interval of time that the berg crop 

 is in the locality. Nevertheless, the correlation between FDD's for 

 the selected stations along the iceberg route and the relative severity 

 of the Grand Banks iceberg season is good. 



A study of table IV reveals the following facts : 



1. The highest accumulation of FDD's for every station occurred 

 in 1957. This was the heaviest iceberg season during the period. 



2. All stations except Clyde River had much below average FDD's 

 in 1958. Cartwright and Hopedale both had the smallest number of 

 FDD's in 1958 of any year from 1956-64. 1958 was the lightest ice 

 season during the period considered. 



3. Cartwright and Hopedale appear to give the best correlation. 

 This might be expected as the period of time when the Grand Banks 

 berg crop is in the area of Hopedale and Cartwright more closely 

 coincides with the period that FDD's are accumulated there. 



4. The poorest correlation was obtained for 1963. All stations ex- 

 cept Clyde River had an average or greater than average number 

 of FDD's in 1963. Yet the corresponding iceberg season on the Grand 

 Banks was very light. Preseason northern iceberg surveys revealed 

 that the iceberg supply was extremely light as early as January. It 

 is believed that strong offshore winds in the area from Cape Chidley 

 to Cape Dyer in November and December 1962 drove most of the 

 first half of the crop out of the current system and out to sea between 

 Greenland and Resolution Island. 



It is concluded that the correlation between the accumulated FDD's 

 during the winter at selected stations along the Baffin Bay to Grand 

 Banks berg route and the relative severity of the Grand Banks iceberg 

 season is good. While the correlation does not appear to be close 

 enough for forecasting purposes, it nevertheless gives good indication 

 of the coming ice season, especially the pack ice conditions. Any fore- 

 casting based on monthly atmospheric pressure distribution and the 

 known upstream supply should be prejudiced by the relative amount 

 of accumulated FDD's at selected stations as compared to the average 



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