Validation of sea ice concentration - American sector
Bulletin date: 2024-05-02
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-04-26:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
1 |
0 |
10 |
8 |
0 |
0 |
0 |
| ODI |
0 |
4 |
6 |
12 |
28 |
17 |
23 |
0 |
| CDI |
0 |
18 |
15 |
80 |
220 |
128 |
154 |
9 |
| VCDI |
0 |
0 |
6 |
98 |
688 |
2595 |
18135 |
23611 |
|
...date precedes bulletin
|
Date: 2024-04-28:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
0 |
2 |
7 |
1 |
0 |
0 |
| ODI |
0 |
0 |
1 |
10 |
25 |
8 |
15 |
0 |
| CDI |
0 |
11 |
6 |
97 |
178 |
176 |
198 |
1 |
| VCDI |
0 |
2 |
8 |
69 |
586 |
2886 |
15772 |
25807 |
|
...date precedes bulletin
|
Date: 2024-04-30:
| 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 |
0 |
0 |
0 |
0 |
0 |
0 |
| VODI |
0 |
7 |
0 |
4 |
0 |
6 |
17 |
0 |
| ODI |
0 |
7 |
3 |
24 |
19 |
37 |
54 |
0 |
| CDI |
0 |
17 |
18 |
75 |
300 |
288 |
270 |
0 |
| VCDI |
0 |
0 |
4 |
47 |
526 |
2414 |
14848 |
26881 |
|
...date precedes bulletin
|
Date: 2024-05-02:
| 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 |
0 |
0 |
3 |
2 |
1 |
0 |
| VODI |
0 |
1 |
1 |
4 |
17 |
13 |
18 |
0 |
| ODI |
0 |
13 |
3 |
17 |
45 |
35 |
38 |
0 |
| CDI |
0 |
58 |
21 |
80 |
291 |
440 |
458 |
0 |
| VCDI |
0 |
3 |
17 |
93 |
608 |
2289 |
13984 |
27313 |
|
|
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 |
0 |
0 |
4 |
2 |
1 |
0 |
| VODI |
0 |
4 |
1 |
6 |
20 |
18 |
17 |
0 |
| ODI |
0 |
15 |
5 |
25 |
59 |
33 |
37 |
0 |
| CDI |
0 |
53 |
18 |
71 |
301 |
444 |
463 |
0 |
| VCDI |
0 |
3 |
18 |
92 |
580 |
2282 |
13981 |
27313 |
|
Date: 2024-05-04:
| 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 |
3 |
4 |
4 |
0 |
0 |
0 |
0 |
| VODI |
0 |
29 |
5 |
31 |
22 |
3 |
0 |
0 |
| ODI |
0 |
49 |
8 |
51 |
60 |
33 |
5 |
0 |
| CDI |
0 |
168 |
29 |
88 |
512 |
520 |
307 |
0 |
| VCDI |
0 |
266 |
35 |
773 |
1272 |
2530 |
15756 |
23303 |
|
|
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 |
5 |
5 |
6 |
3 |
0 |
0 |
0 |
| VODI |
0 |
27 |
4 |
36 |
25 |
7 |
0 |
0 |
| ODI |
0 |
53 |
10 |
57 |
68 |
37 |
7 |
0 |
| CDI |
0 |
170 |
27 |
95 |
513 |
515 |
316 |
0 |
| VCDI |
0 |
260 |
35 |
753 |
1257 |
2527 |
15745 |
23303 |
|
Date: 2024-05-06:
| 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 |
3 |
2 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
45 |
3 |
1 |
2 |
0 |
0 |
0 |
| VODI |
0 |
97 |
13 |
39 |
41 |
7 |
0 |
0 |
| ODI |
0 |
106 |
17 |
75 |
112 |
46 |
2 |
0 |
| CDI |
0 |
56 |
43 |
153 |
655 |
1320 |
258 |
0 |
| VCDI |
0 |
97 |
30 |
211 |
566 |
2619 |
16451 |
22796 |
|
|
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 |
4 |
5 |
1 |
0 |
0 |
0 |
0 |
| VODI |
0 |
22 |
6 |
18 |
35 |
6 |
1 |
0 |
| ODI |
0 |
42 |
6 |
49 |
83 |
48 |
12 |
0 |
| CDI |
0 |
155 |
27 |
111 |
444 |
1029 |
471 |
0 |
| VCDI |
0 |
181 |
64 |
300 |
814 |
2909 |
16227 |
22796 |
|
Date: 2024-05-08:
| 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 |
28 |
1 |
2 |
0 |
0 |
0 |
0 |
| OW |
0 |
96 |
3 |
5 |
8 |
4 |
0 |
0 |
| VODI |
0 |
108 |
17 |
30 |
30 |
12 |
0 |
0 |
| ODI |
0 |
72 |
24 |
75 |
91 |
59 |
14 |
0 |
| CDI |
0 |
69 |
63 |
267 |
513 |
619 |
586 |
0 |
| VCDI |
0 |
25 |
40 |
243 |
585 |
2884 |
18070 |
21223 |
|
|
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 |
1 |
1 |
2 |
1 |
1 |
0 |
0 |
| VODI |
0 |
38 |
9 |
20 |
17 |
14 |
2 |
0 |
| ODI |
0 |
56 |
12 |
50 |
66 |
29 |
31 |
0 |
| CDI |
0 |
202 |
53 |
188 |
369 |
598 |
703 |
0 |
| VCDI |
0 |
101 |
73 |
362 |
774 |
2936 |
17934 |
21223 |
|
Date: 2024-05-10:
| 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 |
20 |
0 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
64 |
4 |
5 |
1 |
3 |
0 |
0 |
| VODI |
0 |
112 |
9 |
22 |
24 |
10 |
0 |
0 |
| ODI |
0 |
96 |
35 |
81 |
86 |
59 |
17 |
0 |
| CDI |
0 |
108 |
46 |
241 |
691 |
641 |
666 |
6 |
| VCDI |
0 |
73 |
66 |
330 |
707 |
3589 |
17334 |
20720 |
|
|
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 |
4 |
0 |
0 |
2 |
4 |
0 |
0 |
| VODI |
0 |
47 |
4 |
11 |
19 |
20 |
2 |
0 |
| ODI |
0 |
81 |
13 |
50 |
65 |
38 |
27 |
0 |
| CDI |
0 |
204 |
47 |
179 |
591 |
656 |
474 |
31 |
| VCDI |
0 |
137 |
96 |
439 |
832 |
3584 |
17514 |
20695 |
|
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