Scale Analysis of Blocking Events from 2002 to 2004: A Case Study of an Unusually Persistent Blocking Event Leading to a Heat Wave in the Gulf of Alaska during August 2004

Table 4

Planetary-scale and synoptic-scale dominance results for all the blocking events during the year 2002. The italic entries are the selected case studies. See text for details.

Event no.	Start date	End date	Duration (days)	Planetary-scale dominance	Synoptic-scale dominance
1	02 Jan.	11 Jan.	9.5	Positive	Negative
2	03 Jan.	08 Jan.	5	Positive	Negative
3	07 Jan.	28 Jan.	21	Alternating	Alternating
4	13 Jan.	27 Jan.	14	Negative	Positive
5	25 Jan.	30 Jan.	5	Negative	Positive
6	30 Jan.	05 Feb.	6	Negative	Positive
7	31 Jan.	06 Feb.	5.5	Negative	Positive
8	06 Feb.	11 Feb.	5	Alternating	Alternating
9	02 Feb.	12 Feb.	10	Negative	Positive
10	12 Feb.	17 Feb.	5	Negative	Positive
11	11 Feb.	28 Feb.	17	Alternating	Alternating
12	01 Mar.	07 Mar.	6	Positive	Negative
13	04 Mar.	21 Mar.	17	Negative	Positive
14	06 Mar.	21 Mar.	15	Positive	Negative
15	09 Mar.	28 Mar.	19	Negative	Positive
16	01 Apr.	18 Apr.	17	Positive	Negative
17	02 Apr.	07 Apr.	5	Negative	Positive
18	15 Apr.	24 Apr.	9	Positive	Negative
19	19 Apr.	04 May	13.5	Negative	Positive
20	23 Apr.	03 May	8.5	Negative	Positive
21	10 May	19 May	9	Positive	Negative
22	09 May	29 May	20	Positive	Negative
23	01 Jun.	10 Jun.	9	Alternating	Alternating
24	04 Jun.	09 Jul.	35	Alternating	Alternating
25	22 Jun.	30 Jun.	8	Negative	Positive
26	30 Jun.	08 Jul.	9	Positive	Negative
27	06 Jul.	17 Jul.	9	Negative	Positive
28	30 Jul.	07 Aug.	8	Positive	Negative
29	01 Aug.	11 Aug.	10	Positive	Negative
30	15 Aug.	28 Aug.	13	Negative	Positive
31	07 Sep.	18 Sep.	11	Alternating	Alternating
32	23 Sep.	28 Sep.	5	Positive	Negative
33	20 Sep.	02 Oct.	12	Positive	Negative
34	06 Oct.	15 Oct.	9	Positive	Negative
35	13 Oct.	18 Oct.	5	Alternating	Alternating
36	22 Oct.	03 Nov.	12	Negative	Positive
37	25 Oct.	30 Oct.	5	Negative	Positive
38	01 Nov.	06 Nov.	5.5	Alternating	Alternating
39	18 Nov.	25 Nov.	7	Positive	Negative
40	20 Nov.	11 Dec.	21	Negative	Positive
41	26 Nov.	28 Dec.	32.5	Alternating	Alternating