Validation of sea ice concentration - American sector
Bulletin date: 2024-12-26
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-12-20:
| 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 |
619 |
2066 |
45 |
51 |
11 |
0 |
0 |
0 |
| OW |
76 |
621 |
108 |
200 |
52 |
22 |
0 |
0 |
| VODI |
41 |
158 |
67 |
256 |
319 |
257 |
0 |
0 |
| ODI |
0 |
11 |
7 |
41 |
132 |
284 |
4 |
0 |
| CDI |
0 |
0 |
0 |
4 |
109 |
888 |
436 |
0 |
| VCDI |
0 |
0 |
0 |
15 |
182 |
2658 |
10938 |
25188 |
|
...date precedes bulletin
|
Date: 2024-12-22:
| 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 |
270 |
1367 |
44 |
46 |
5 |
0 |
0 |
0 |
| OW |
14 |
688 |
83 |
205 |
188 |
31 |
0 |
0 |
| VODI |
27 |
192 |
43 |
222 |
358 |
245 |
8 |
0 |
| ODI |
3 |
9 |
3 |
37 |
187 |
479 |
24 |
0 |
| CDI |
0 |
0 |
2 |
13 |
127 |
609 |
491 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
121 |
1983 |
10580 |
27155 |
|
...date precedes bulletin
|
Date: 2024-12-24:
| 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 |
188 |
965 |
24 |
16 |
0 |
0 |
0 |
0 |
| OW |
0 |
846 |
138 |
128 |
20 |
0 |
0 |
0 |
| VODI |
0 |
221 |
107 |
339 |
204 |
19 |
0 |
0 |
| ODI |
0 |
4 |
17 |
123 |
680 |
255 |
5 |
0 |
| CDI |
0 |
10 |
4 |
29 |
235 |
844 |
144 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
117 |
2118 |
10292 |
27774 |
|
...date precedes bulletin
|
Date: 2024-12-26:
| 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 |
264 |
860 |
26 |
16 |
0 |
0 |
0 |
0 |
| OW |
0 |
749 |
154 |
90 |
18 |
1 |
0 |
0 |
| VODI |
0 |
326 |
87 |
187 |
287 |
21 |
0 |
0 |
| ODI |
0 |
33 |
22 |
136 |
527 |
371 |
7 |
0 |
| CDI |
0 |
0 |
1 |
46 |
404 |
888 |
164 |
1 |
| VCDI |
0 |
0 |
0 |
6 |
391 |
1861 |
10791 |
27131 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
264 |
1128 |
71 |
55 |
0 |
0 |
0 |
0 |
| OW |
0 |
620 |
143 |
83 |
48 |
0 |
0 |
0 |
| VODI |
0 |
190 |
55 |
195 |
417 |
66 |
0 |
0 |
| ODI |
0 |
30 |
20 |
110 |
449 |
398 |
34 |
0 |
| CDI |
0 |
0 |
1 |
31 |
338 |
976 |
278 |
8 |
| VCDI |
0 |
0 |
0 |
7 |
375 |
1702 |
10650 |
27124 |
|
Date: 2024-12-28:
| 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 |
183 |
952 |
15 |
6 |
0 |
0 |
0 |
0 |
| OW |
6 |
757 |
59 |
97 |
5 |
0 |
0 |
0 |
| VODI |
34 |
400 |
66 |
291 |
319 |
5 |
0 |
0 |
| ODI |
10 |
137 |
47 |
209 |
431 |
147 |
0 |
0 |
| CDI |
0 |
55 |
15 |
106 |
353 |
979 |
435 |
4 |
| VCDI |
0 |
12 |
7 |
21 |
147 |
1901 |
10875 |
26780 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
183 |
1314 |
37 |
31 |
0 |
0 |
0 |
0 |
| OW |
6 |
561 |
64 |
191 |
58 |
0 |
0 |
0 |
| VODI |
30 |
257 |
53 |
218 |
396 |
54 |
0 |
0 |
| ODI |
14 |
134 |
39 |
228 |
348 |
211 |
10 |
0 |
| CDI |
0 |
46 |
16 |
57 |
332 |
826 |
369 |
12 |
| VCDI |
0 |
1 |
0 |
5 |
121 |
1941 |
10931 |
26772 |
|
Date: 2024-12-30:
| 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 |
275 |
1259 |
15 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
751 |
160 |
265 |
10 |
0 |
0 |
0 |
| VODI |
0 |
199 |
127 |
382 |
430 |
6 |
0 |
0 |
| ODI |
0 |
14 |
9 |
175 |
612 |
238 |
0 |
0 |
| CDI |
0 |
7 |
2 |
34 |
212 |
931 |
68 |
7 |
| VCDI |
0 |
9 |
11 |
31 |
150 |
1742 |
6989 |
30736 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
275 |
1325 |
31 |
21 |
0 |
0 |
0 |
0 |
| OW |
0 |
598 |
101 |
223 |
59 |
0 |
0 |
0 |
| VODI |
0 |
253 |
103 |
249 |
403 |
40 |
0 |
0 |
| ODI |
0 |
33 |
65 |
267 |
350 |
118 |
0 |
0 |
| CDI |
0 |
30 |
23 |
123 |
410 |
642 |
52 |
62 |
| VCDI |
0 |
0 |
1 |
14 |
192 |
2117 |
7005 |
30681 |
|
Date: 2025-01-01:
| 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 |
437 |
1417 |
33 |
23 |
0 |
0 |
0 |
0 |
| OW |
7 |
635 |
139 |
302 |
53 |
0 |
0 |
0 |
| VODI |
0 |
167 |
71 |
218 |
234 |
138 |
0 |
0 |
| ODI |
0 |
32 |
32 |
137 |
310 |
302 |
0 |
0 |
| CDI |
0 |
14 |
7 |
91 |
155 |
634 |
39 |
9 |
| VCDI |
0 |
20 |
14 |
35 |
145 |
2096 |
11400 |
26520 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
428 |
1426 |
53 |
70 |
1 |
0 |
0 |
0 |
| OW |
16 |
488 |
79 |
179 |
34 |
8 |
0 |
0 |
| VODI |
0 |
243 |
92 |
258 |
256 |
90 |
0 |
0 |
| ODI |
0 |
65 |
38 |
118 |
220 |
169 |
0 |
0 |
| CDI |
0 |
28 |
21 |
127 |
193 |
464 |
42 |
52 |
| VCDI |
0 |
35 |
13 |
54 |
193 |
2439 |
11397 |
26477 |
|
Date: 2025-01-03:
| 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 |
133 |
1514 |
106 |
102 |
8 |
0 |
0 |
0 |
| OW |
0 |
392 |
86 |
301 |
203 |
90 |
14 |
0 |
| VODI |
0 |
99 |
72 |
201 |
115 |
128 |
105 |
0 |
| ODI |
0 |
24 |
15 |
134 |
48 |
109 |
147 |
0 |
| CDI |
0 |
20 |
5 |
58 |
48 |
160 |
276 |
0 |
| VCDI |
0 |
14 |
9 |
42 |
126 |
2626 |
12163 |
26173 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
132 |
1580 |
103 |
99 |
30 |
2 |
0 |
0 |
| OW |
1 |
278 |
69 |
232 |
77 |
66 |
4 |
0 |
| VODI |
0 |
120 |
78 |
262 |
213 |
132 |
82 |
0 |
| ODI |
0 |
36 |
19 |
111 |
45 |
137 |
132 |
0 |
| CDI |
0 |
38 |
17 |
97 |
64 |
195 |
273 |
3 |
| VCDI |
0 |
11 |
7 |
37 |
119 |
2581 |
12214 |
26170 |
|
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