Validation of sea ice concentration - American sector
Bulletin date: 2023-12-14
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-08:
| 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 |
2472 |
3226 |
116 |
111 |
30 |
0 |
0 |
0 |
| OW |
172 |
1175 |
228 |
234 |
64 |
9 |
0 |
0 |
| VODI |
63 |
489 |
156 |
779 |
223 |
80 |
2 |
0 |
| ODI |
1 |
46 |
16 |
149 |
313 |
252 |
48 |
0 |
| CDI |
0 |
52 |
7 |
16 |
232 |
906 |
245 |
0 |
| VCDI |
0 |
46 |
23 |
48 |
122 |
1546 |
11173 |
20996 |
|
...date precedes bulletin
|
Date: 2023-12-10:
| 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 |
1151 |
3379 |
216 |
384 |
35 |
0 |
0 |
0 |
| OW |
95 |
1127 |
133 |
408 |
272 |
6 |
0 |
0 |
| VODI |
9 |
294 |
97 |
244 |
784 |
152 |
2 |
0 |
| ODI |
0 |
12 |
4 |
83 |
332 |
471 |
57 |
0 |
| CDI |
0 |
11 |
5 |
21 |
187 |
943 |
691 |
0 |
| VCDI |
0 |
0 |
6 |
28 |
141 |
1252 |
9823 |
23011 |
|
...date precedes bulletin
|
Date: 2023-12-12:
| 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 |
851 |
2866 |
246 |
411 |
184 |
6 |
0 |
0 |
| OW |
213 |
505 |
140 |
346 |
329 |
3 |
0 |
0 |
| VODI |
19 |
79 |
86 |
333 |
412 |
44 |
0 |
0 |
| ODI |
0 |
2 |
11 |
123 |
399 |
249 |
2 |
0 |
| CDI |
0 |
0 |
5 |
18 |
303 |
1182 |
183 |
0 |
| VCDI |
0 |
0 |
4 |
21 |
255 |
2107 |
8772 |
25157 |
|
...date precedes bulletin
|
Date: 2023-12-14:
| 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 |
389 |
2322 |
164 |
477 |
304 |
6 |
0 |
0 |
| OW |
9 |
643 |
133 |
249 |
363 |
114 |
0 |
0 |
| VODI |
0 |
206 |
79 |
250 |
477 |
193 |
0 |
0 |
| ODI |
0 |
6 |
3 |
122 |
364 |
368 |
8 |
0 |
| CDI |
0 |
1 |
3 |
19 |
266 |
666 |
232 |
0 |
| VCDI |
0 |
1 |
0 |
10 |
488 |
2797 |
8756 |
25378 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
388 |
2255 |
162 |
491 |
350 |
32 |
0 |
0 |
| OW |
10 |
690 |
128 |
211 |
308 |
92 |
0 |
0 |
| VODI |
0 |
224 |
80 |
250 |
482 |
205 |
0 |
0 |
| ODI |
0 |
8 |
9 |
137 |
352 |
378 |
5 |
0 |
| CDI |
0 |
1 |
3 |
26 |
289 |
635 |
218 |
0 |
| VCDI |
0 |
1 |
0 |
12 |
481 |
2802 |
8773 |
25378 |
|
Date: 2023-12-16:
| 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 |
310 |
1840 |
122 |
262 |
412 |
57 |
0 |
0 |
| OW |
0 |
508 |
137 |
185 |
270 |
149 |
12 |
0 |
| VODI |
0 |
345 |
99 |
192 |
382 |
345 |
35 |
0 |
| ODI |
0 |
53 |
20 |
156 |
382 |
310 |
33 |
0 |
| CDI |
0 |
0 |
1 |
28 |
313 |
961 |
488 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
341 |
2212 |
9266 |
25639 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
310 |
1824 |
129 |
277 |
453 |
65 |
3 |
0 |
| OW |
0 |
512 |
125 |
147 |
218 |
165 |
22 |
0 |
| VODI |
0 |
363 |
101 |
207 |
378 |
331 |
34 |
0 |
| ODI |
0 |
47 |
23 |
157 |
349 |
313 |
20 |
0 |
| CDI |
0 |
0 |
1 |
34 |
334 |
1006 |
464 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
368 |
2154 |
9291 |
25639 |
|
Date: 2023-12-18:
| 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 |
224 |
1447 |
80 |
186 |
159 |
214 |
0 |
0 |
| OW |
0 |
299 |
72 |
101 |
93 |
144 |
0 |
0 |
| VODI |
0 |
140 |
110 |
381 |
135 |
190 |
0 |
0 |
| ODI |
0 |
17 |
27 |
236 |
340 |
470 |
3 |
0 |
| CDI |
0 |
0 |
5 |
20 |
200 |
1541 |
170 |
32 |
| VCDI |
0 |
0 |
0 |
0 |
57 |
2920 |
7323 |
28530 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
224 |
1305 |
83 |
201 |
239 |
470 |
0 |
0 |
| OW |
0 |
406 |
65 |
94 |
80 |
314 |
0 |
0 |
| VODI |
0 |
135 |
87 |
312 |
177 |
391 |
28 |
0 |
| ODI |
0 |
29 |
41 |
269 |
222 |
552 |
40 |
0 |
| CDI |
0 |
26 |
8 |
31 |
180 |
1252 |
592 |
0 |
| VCDI |
0 |
2 |
10 |
17 |
86 |
2500 |
6836 |
28562 |
|
Date: 2023-12-20:
| 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 |
0 |
1163 |
64 |
83 |
151 |
163 |
0 |
0 |
| OW |
0 |
405 |
48 |
138 |
109 |
184 |
0 |
0 |
| VODI |
0 |
83 |
64 |
195 |
185 |
252 |
1 |
0 |
| ODI |
0 |
2 |
7 |
100 |
369 |
382 |
35 |
0 |
| CDI |
0 |
0 |
0 |
30 |
158 |
943 |
328 |
7 |
| VCDI |
0 |
0 |
0 |
0 |
55 |
2415 |
9811 |
27936 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1039 |
60 |
103 |
191 |
446 |
4 |
0 |
| OW |
0 |
414 |
54 |
119 |
95 |
306 |
55 |
0 |
| VODI |
0 |
189 |
50 |
126 |
142 |
254 |
152 |
0 |
| ODI |
0 |
10 |
19 |
164 |
331 |
328 |
243 |
0 |
| CDI |
0 |
1 |
0 |
34 |
201 |
741 |
628 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
67 |
2264 |
9093 |
27943 |
|
Date: 2023-12-22:
| 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 |
0 |
735 |
32 |
64 |
90 |
88 |
0 |
0 |
| OW |
0 |
450 |
68 |
82 |
112 |
158 |
6 |
0 |
| VODI |
0 |
241 |
58 |
170 |
174 |
163 |
57 |
0 |
| ODI |
0 |
23 |
18 |
109 |
525 |
151 |
41 |
0 |
| CDI |
0 |
5 |
7 |
68 |
364 |
409 |
254 |
1 |
| VCDI |
0 |
0 |
0 |
20 |
177 |
2200 |
11801 |
26945 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
503 |
22 |
43 |
49 |
169 |
0 |
0 |
| OW |
0 |
551 |
51 |
105 |
177 |
336 |
85 |
0 |
| VODI |
0 |
317 |
72 |
134 |
264 |
297 |
157 |
0 |
| ODI |
0 |
74 |
21 |
99 |
365 |
179 |
216 |
0 |
| CDI |
0 |
9 |
16 |
103 |
421 |
279 |
460 |
13 |
| VCDI |
0 |
0 |
1 |
29 |
166 |
1909 |
11241 |
26933 |
|
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