35W 3DW" 



Figure 16. Iceberg distribution on June 3, 1999 from the iceberg analysis issued by the Canadian 

 Ice Service. There are 1914 icebergs on this plot. 



conducted in good to excellent visibility. 

 On 1 to 2 June the IIP airplane detected 

 nearly 1400 icebergs during two 

 consecutive flights. Despite this large 

 iceberg population, Ice Patrol estimated 

 that just five icebergs drifted south of 48°N 

 in June, much less than the monthly 

 average of 87. The easternmost predicted 

 iceberg drift for the year was on June 29, 

 1999 when an iceberg was estimated to 

 have reached 48°26'N and 45°32'W. 



Ice Patrol suspended its active 

 aerial reconnaissance for 1999 after the 

 return of Ice Reconnaissance Detachment 

 #6 on June 4. However, Ice Patrol 

 continued to receive ship and Canadian 

 aerial reconnaissance reports throughout 

 the next several months. 



25 



Over a seven-day period from June 

 through July 1, six Canadian 



reconnaissance flights, most with the CIS's 

 reconnaissance airplane, observed over 

 2000 icebergs in east Newfoundland 

 waters and along the Labrador coast. For 

 the entire month of July, Ice Patrol 

 estimated that three icebergs drifted south 

 of 48°N, compared to a 100-year average 

 of 31. The easternmost observed iceberg 

 in 1999 was seen by a ship on July 14 at 

 47°56'N and 46°28'W. The southernmost 

 predicted drift for the year was on July 1 1 

 when an iceberg was estimated to have 

 reached 47°15'N and 46°07'W. 



Summary 



The factors that shape the severity 

 of an iceberg season in the western North 

 Atlantic ocean can be divided into three 

 main categories. The first is the supply of 

 icebergs to the southern Labrador coast, 

 which is affected by iceberg calving 



21 



