Validation of sea ice concentration - American sector
Bulletin date: 2024-05-09
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-05-03:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
0 |
1 |
1 |
1 |
1 |
2 |
0 |
| VODI |
0 |
5 |
3 |
10 |
31 |
12 |
12 |
0 |
| ODI |
0 |
28 |
4 |
15 |
51 |
41 |
27 |
0 |
| CDI |
0 |
86 |
17 |
96 |
319 |
510 |
481 |
0 |
| VCDI |
0 |
81 |
30 |
141 |
553 |
2353 |
15709 |
25245 |
|
...date precedes bulletin
|
Date: 2024-05-05:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
6 |
2 |
2 |
1 |
0 |
0 |
0 |
| VODI |
0 |
23 |
5 |
34 |
14 |
10 |
0 |
0 |
| ODI |
0 |
52 |
7 |
46 |
63 |
41 |
16 |
0 |
| CDI |
0 |
166 |
37 |
95 |
443 |
740 |
345 |
0 |
| VCDI |
0 |
202 |
66 |
313 |
1041 |
3379 |
16472 |
22245 |
|
...date precedes bulletin
|
Date: 2024-05-07:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
13 |
4 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
81 |
5 |
12 |
3 |
1 |
0 |
0 |
| VODI |
0 |
110 |
17 |
22 |
26 |
15 |
1 |
0 |
| ODI |
0 |
81 |
23 |
73 |
89 |
58 |
18 |
0 |
| CDI |
0 |
63 |
48 |
232 |
490 |
849 |
590 |
0 |
| VCDI |
0 |
35 |
23 |
254 |
593 |
2373 |
17234 |
22430 |
|
...date precedes bulletin
|
Date: 2024-05-09:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
34 |
1 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
82 |
5 |
3 |
6 |
4 |
0 |
0 |
| VODI |
0 |
119 |
18 |
32 |
30 |
13 |
1 |
0 |
| ODI |
0 |
82 |
29 |
84 |
72 |
51 |
11 |
0 |
| CDI |
0 |
88 |
66 |
271 |
574 |
559 |
542 |
18 |
| VCDI |
0 |
35 |
50 |
302 |
617 |
3220 |
15929 |
22918 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
45 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
80 |
4 |
4 |
8 |
4 |
0 |
0 |
| VODI |
0 |
111 |
18 |
35 |
28 |
14 |
0 |
0 |
| ODI |
0 |
80 |
29 |
86 |
68 |
51 |
15 |
0 |
| CDI |
0 |
87 |
62 |
250 |
556 |
565 |
584 |
17 |
| VCDI |
0 |
37 |
54 |
317 |
639 |
3213 |
15884 |
22919 |
|
Date: 2024-05-11:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
41 |
3 |
4 |
3 |
0 |
0 |
0 |
| VODI |
0 |
109 |
11 |
24 |
18 |
7 |
2 |
0 |
| ODI |
0 |
120 |
36 |
68 |
77 |
65 |
24 |
0 |
| CDI |
0 |
136 |
60 |
311 |
753 |
900 |
1073 |
0 |
| VCDI |
0 |
32 |
37 |
251 |
627 |
2731 |
19032 |
19311 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
5 |
0 |
0 |
1 |
0 |
0 |
0 |
| OW |
0 |
38 |
3 |
4 |
3 |
0 |
0 |
0 |
| VODI |
0 |
115 |
9 |
23 |
18 |
9 |
4 |
0 |
| ODI |
0 |
114 |
40 |
66 |
87 |
69 |
36 |
0 |
| CDI |
0 |
129 |
59 |
309 |
745 |
942 |
1283 |
28 |
| VCDI |
0 |
37 |
36 |
256 |
624 |
2683 |
18808 |
19283 |
|
Date: 2024-05-13:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
8 |
0 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
236 |
11 |
11 |
12 |
1 |
0 |
0 |
| VODI |
0 |
190 |
61 |
84 |
52 |
9 |
0 |
0 |
| ODI |
0 |
142 |
78 |
261 |
264 |
62 |
6 |
0 |
| CDI |
0 |
90 |
60 |
404 |
958 |
1148 |
510 |
0 |
| VCDI |
0 |
12 |
17 |
92 |
363 |
2210 |
21782 |
16730 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
46 |
0 |
1 |
2 |
1 |
0 |
0 |
| VODI |
0 |
148 |
17 |
32 |
34 |
3 |
2 |
0 |
| ODI |
0 |
151 |
41 |
61 |
91 |
37 |
28 |
0 |
| CDI |
0 |
218 |
99 |
453 |
893 |
948 |
899 |
4 |
| VCDI |
0 |
113 |
70 |
307 |
629 |
2441 |
21369 |
16726 |
|
Date: 2024-05-15:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
113 |
9 |
6 |
2 |
0 |
0 |
0 |
| OW |
0 |
309 |
21 |
40 |
39 |
4 |
0 |
0 |
| VODI |
0 |
151 |
41 |
90 |
48 |
36 |
1 |
0 |
| ODI |
0 |
93 |
47 |
117 |
122 |
53 |
5 |
0 |
| CDI |
0 |
163 |
126 |
394 |
804 |
866 |
394 |
0 |
| VCDI |
0 |
12 |
17 |
121 |
501 |
2371 |
23800 |
14950 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
82 |
2 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
100 |
5 |
4 |
10 |
0 |
0 |
0 |
| VODI |
0 |
113 |
15 |
46 |
40 |
6 |
6 |
0 |
| ODI |
0 |
110 |
33 |
77 |
80 |
47 |
27 |
0 |
| CDI |
0 |
280 |
119 |
343 |
726 |
717 |
607 |
56 |
| VCDI |
0 |
156 |
87 |
296 |
660 |
2560 |
23560 |
14894 |
|
Date: 2024-05-17:
| Best estimate |
Forecast |
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
188 |
5 |
9 |
2 |
0 |
0 |
0 |
| OW |
0 |
286 |
29 |
40 |
47 |
0 |
0 |
0 |
| VODI |
0 |
145 |
42 |
95 |
74 |
23 |
0 |
0 |
| ODI |
0 |
104 |
48 |
114 |
119 |
42 |
23 |
0 |
| CDI |
0 |
227 |
142 |
429 |
707 |
851 |
438 |
0 |
| VCDI |
0 |
17 |
24 |
151 |
509 |
3395 |
25739 |
11802 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
125 |
3 |
2 |
2 |
0 |
0 |
0 |
| OW |
0 |
90 |
3 |
8 |
15 |
1 |
2 |
0 |
| VODI |
0 |
117 |
19 |
40 |
54 |
36 |
12 |
0 |
| ODI |
0 |
121 |
42 |
98 |
108 |
61 |
63 |
1 |
| CDI |
0 |
291 |
105 |
340 |
596 |
724 |
1078 |
74 |
| VCDI |
0 |
223 |
118 |
350 |
683 |
3489 |
25045 |
11727 |
|
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