of 4.1 million tons (Pip Rudkin, personal 

 communication). Ice Patrol, in cooperation 

 with Provincial Aerospace Limited, attempted 

 to place a satellite-tracked beacon on the 

 iceberg, but persistent poor visibility prevented 

 the deployment. 



Between the middle and end of June, 

 there was a significant reduction in the iceberg 

 population south of 48°N, as seasonal warming 

 began to take its toll. On 30 June (see p. 35), 

 there were ten icebergs and growlers south of 

 48°N. Despite the small number of icebergs, 

 the southern and eastern LAKI expanded 

 during the second half of June. Two isolated 

 growlers set the southern LAKI at 44°N, which 

 is between the 75* percentile and the median 

 for the date. A single, isolated iceberg set the 

 eastern LAKI at 41° W, which was at the 25* 

 percentile. June was the only month of the 2004 

 iceberg season during which the number of 

 icebergs that passed south of 48°N (117) 

 exceeded the monthly average (85). On 19 

 June, a ship found the eastern-most iceberg 

 (46°N, 45.60W) detected during the season. 



July 



July brought Ice Patrol's 2004 ice season to a 

 close. By 15 July (see p. 36), the iceberg 

 population south of 48°N had been reduced to 



two widely separated icebergs. The southern 

 LAKI was at the median for the date, while the 

 eastern LAKI was at the 75* percentile. The 

 iceberg season closed on 27 July. Seven 

 icebergs passed south of 48°N during July; the 

 average for the month is 31. Ice Patrol's last 

 2004 Ice Reconnaissance Detachment returned 

 from Newfoundland on 3 July. On 2 July, the 

 Ice Patrol reconnaissance airplane found the 

 southern-most iceberg detected during the 

 season at 43°22.3'N, 49°16.2'W. Both the 

 eastern-most and southern-most estimated 

 (drifted by the model) iceberg positions for the 

 season occurred in July: the eastern-most 

 (46°46.8'N, 41°21.6'W) on 1 July and the 

 southern-most (42°30.6'N, 49°54.6' W) on 1 1 

 July. 



Summary 



By all measures, 2004 was a mild 

 iceberg season. Icebergs arrived at 48°N in late 

 April, about two months later than normal; 

 indeed, the 27 April season opening was the 

 latest in Ice Patrol's history. With 262 icebergs 

 estimated to have passed south of 48°N, the 

 2004 season falls into the light category (<300 

 icebergs), as defined by Trivers (1994) and the 

 92-day season length places 2004 in the short- 

 season category (<105 days). 



Sea-ice coverage in east-Newfoundland 



iD 



^ -» (O K) K) 



5 R> J ^ - 

 ?s Q § ^ $s 



W CO 



(J CO CO 



g 2 8 § g § S 



tJtocotoySoyio 



hO OD 



^ 55 Rl 



\o <o _ 

 5 Rs fa 



s s s 



.-_.-.-- y S iv) Ri y ^ S f3 



Dates 



Figure 25. Normalized ice coverage in east-Newfoundland waters in 2004. (Courtesy of CIS.) 



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