Validation of sea ice concentration - American sector
Bulletin date: 2023-10-26
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-10-20:
| 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 |
14583 |
6271 |
269 |
349 |
166 |
7 |
0 |
0 |
| OW |
0 |
361 |
122 |
304 |
324 |
76 |
0 |
0 |
| VODI |
0 |
70 |
59 |
229 |
506 |
125 |
0 |
0 |
| ODI |
0 |
17 |
18 |
77 |
353 |
358 |
4 |
0 |
| CDI |
0 |
9 |
11 |
36 |
199 |
1997 |
529 |
0 |
| VCDI |
0 |
0 |
5 |
10 |
130 |
2393 |
10788 |
5111 |
|
...date precedes bulletin
|
Date: 2023-10-22:
| 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 |
13863 |
6076 |
195 |
256 |
52 |
6 |
0 |
0 |
| OW |
1 |
538 |
170 |
438 |
275 |
46 |
0 |
0 |
| VODI |
0 |
92 |
62 |
339 |
543 |
113 |
0 |
0 |
| ODI |
0 |
22 |
15 |
131 |
404 |
213 |
14 |
0 |
| CDI |
0 |
20 |
11 |
36 |
360 |
874 |
211 |
0 |
| VCDI |
0 |
3 |
5 |
23 |
200 |
3879 |
11858 |
4522 |
|
...date precedes bulletin
|
Date: 2023-10-24:
| 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 |
13973 |
5979 |
105 |
121 |
15 |
0 |
0 |
0 |
| OW |
0 |
618 |
179 |
308 |
52 |
0 |
0 |
0 |
| VODI |
0 |
150 |
173 |
506 |
413 |
29 |
0 |
0 |
| ODI |
0 |
27 |
41 |
168 |
651 |
177 |
0 |
0 |
| CDI |
0 |
3 |
5 |
48 |
501 |
815 |
11 |
0 |
| VCDI |
0 |
0 |
2 |
16 |
320 |
3623 |
9085 |
7752 |
|
...date precedes bulletin
|
Date: 2023-10-26:
| 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 |
13989 |
5243 |
108 |
141 |
16 |
4 |
0 |
0 |
| OW |
0 |
738 |
186 |
320 |
99 |
11 |
0 |
0 |
| VODI |
0 |
249 |
184 |
478 |
266 |
111 |
0 |
0 |
| ODI |
0 |
25 |
31 |
240 |
390 |
356 |
0 |
0 |
| CDI |
0 |
0 |
4 |
67 |
464 |
948 |
75 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
621 |
4486 |
9432 |
6577 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13989 |
5252 |
124 |
173 |
17 |
1 |
0 |
0 |
| OW |
0 |
725 |
155 |
284 |
106 |
9 |
0 |
0 |
| VODI |
0 |
252 |
195 |
525 |
263 |
98 |
0 |
0 |
| ODI |
0 |
26 |
37 |
203 |
401 |
314 |
0 |
0 |
| CDI |
0 |
0 |
2 |
67 |
478 |
880 |
44 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
591 |
4614 |
9463 |
6577 |
|
Date: 2023-10-28:
| 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 |
12700 |
5536 |
179 |
297 |
0 |
0 |
0 |
0 |
| OW |
0 |
573 |
229 |
450 |
152 |
18 |
0 |
0 |
| VODI |
0 |
145 |
124 |
492 |
453 |
148 |
0 |
0 |
| ODI |
0 |
21 |
36 |
170 |
498 |
343 |
7 |
0 |
| CDI |
0 |
0 |
3 |
44 |
370 |
1046 |
73 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
156 |
5320 |
8213 |
8068 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12699 |
5565 |
197 |
352 |
11 |
0 |
0 |
0 |
| OW |
1 |
504 |
209 |
441 |
169 |
15 |
0 |
0 |
| VODI |
0 |
185 |
124 |
454 |
481 |
122 |
0 |
0 |
| ODI |
0 |
21 |
41 |
162 |
430 |
324 |
4 |
0 |
| CDI |
0 |
0 |
0 |
46 |
405 |
1109 |
84 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
133 |
5305 |
8205 |
8068 |
|
Date: 2023-10-30:
| 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 |
11419 |
5769 |
196 |
162 |
40 |
0 |
0 |
0 |
| OW |
0 |
405 |
205 |
406 |
168 |
4 |
0 |
0 |
| VODI |
0 |
51 |
113 |
594 |
552 |
36 |
0 |
0 |
| ODI |
0 |
0 |
4 |
162 |
948 |
310 |
0 |
0 |
| CDI |
0 |
0 |
0 |
15 |
512 |
1218 |
92 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
23 |
3545 |
10906 |
8011 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11413 |
5691 |
264 |
354 |
170 |
3 |
0 |
0 |
| OW |
6 |
429 |
163 |
458 |
343 |
42 |
0 |
0 |
| VODI |
0 |
92 |
64 |
343 |
619 |
172 |
0 |
0 |
| ODI |
0 |
13 |
23 |
149 |
519 |
369 |
1 |
0 |
| CDI |
0 |
0 |
4 |
35 |
411 |
964 |
148 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
181 |
3563 |
10849 |
8011 |
|
Date: 2023-11-01:
| 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 |
10929 |
5079 |
188 |
255 |
69 |
6 |
0 |
0 |
| OW |
0 |
515 |
185 |
436 |
322 |
43 |
0 |
0 |
| VODI |
0 |
78 |
79 |
305 |
610 |
174 |
0 |
0 |
| ODI |
0 |
9 |
12 |
114 |
540 |
359 |
1 |
0 |
| CDI |
0 |
0 |
0 |
17 |
496 |
1065 |
56 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
97 |
1907 |
8636 |
13284 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10927 |
4966 |
215 |
261 |
125 |
1 |
0 |
0 |
| OW |
2 |
580 |
166 |
489 |
502 |
71 |
0 |
0 |
| VODI |
0 |
106 |
64 |
303 |
671 |
308 |
0 |
0 |
| ODI |
0 |
28 |
16 |
47 |
390 |
543 |
0 |
0 |
| CDI |
0 |
1 |
3 |
27 |
256 |
911 |
95 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
190 |
1720 |
8598 |
13284 |
|
Date: 2023-11-03:
| 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 |
10710 |
4348 |
269 |
285 |
40 |
0 |
0 |
0 |
| OW |
0 |
602 |
156 |
247 |
393 |
47 |
0 |
0 |
| VODI |
0 |
132 |
90 |
280 |
622 |
314 |
13 |
0 |
| ODI |
0 |
28 |
33 |
162 |
540 |
282 |
16 |
0 |
| CDI |
0 |
2 |
5 |
86 |
425 |
545 |
58 |
0 |
| VCDI |
0 |
0 |
1 |
65 |
370 |
2136 |
8372 |
14192 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
10700 |
4183 |
305 |
356 |
261 |
28 |
0 |
0 |
| OW |
10 |
613 |
115 |
217 |
406 |
122 |
0 |
0 |
| VODI |
0 |
268 |
92 |
294 |
725 |
420 |
0 |
0 |
| ODI |
0 |
41 |
32 |
121 |
436 |
527 |
13 |
0 |
| CDI |
0 |
5 |
8 |
87 |
293 |
572 |
144 |
0 |
| VCDI |
0 |
2 |
2 |
50 |
269 |
1655 |
8302 |
14192 |
|
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