Validation of sea ice concentration - Full domain
Bulletin date: 2023-04-27
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-21:
| 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 |
60725 |
20130 |
3811 |
1021 |
252 |
81 |
38 |
0 |
| OW |
51 |
301 |
189 |
329 |
300 |
101 |
27 |
0 |
| VODI |
0 |
168 |
99 |
280 |
357 |
213 |
103 |
0 |
| ODI |
0 |
54 |
64 |
225 |
323 |
364 |
208 |
0 |
| CDI |
0 |
37 |
37 |
200 |
582 |
1049 |
888 |
7 |
| VCDI |
0 |
14 |
27 |
207 |
1319 |
6361 |
32057 |
54449 |
|
...date precedes bulletin
|
Date: 2023-04-23:
| 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 |
60355 |
21378 |
2705 |
1063 |
389 |
93 |
60 |
0 |
| OW |
51 |
223 |
177 |
376 |
309 |
152 |
37 |
0 |
| VODI |
0 |
127 |
137 |
257 |
318 |
300 |
106 |
0 |
| ODI |
0 |
46 |
53 |
230 |
316 |
427 |
225 |
0 |
| CDI |
0 |
35 |
37 |
239 |
622 |
1469 |
1191 |
4 |
| VCDI |
0 |
16 |
53 |
278 |
1103 |
6830 |
35885 |
49376 |
|
...date precedes bulletin
|
Date: 2023-04-25:
| 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 |
67622 |
16583 |
535 |
880 |
480 |
189 |
73 |
0 |
| OW |
59 |
227 |
80 |
294 |
363 |
158 |
34 |
0 |
| VODI |
0 |
163 |
64 |
256 |
358 |
318 |
137 |
0 |
| ODI |
0 |
87 |
54 |
152 |
385 |
451 |
281 |
0 |
| CDI |
0 |
80 |
41 |
241 |
605 |
1254 |
1336 |
4 |
| VCDI |
0 |
30 |
56 |
264 |
1239 |
7144 |
34618 |
49853 |
|
...date precedes bulletin
|
Date: 2023-04-27:
| 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 |
67344 |
17000 |
518 |
821 |
490 |
197 |
62 |
0 |
| OW |
59 |
242 |
109 |
322 |
350 |
149 |
23 |
0 |
| VODI |
0 |
193 |
52 |
274 |
430 |
310 |
120 |
0 |
| ODI |
0 |
104 |
52 |
142 |
358 |
480 |
253 |
0 |
| CDI |
0 |
110 |
37 |
183 |
583 |
1496 |
1203 |
4 |
| VCDI |
0 |
111 |
61 |
292 |
1070 |
7020 |
35472 |
48952 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67344 |
17035 |
539 |
866 |
538 |
211 |
64 |
0 |
| OW |
59 |
236 |
101 |
278 |
316 |
139 |
28 |
0 |
| VODI |
0 |
178 |
50 |
286 |
402 |
325 |
117 |
0 |
| ODI |
0 |
105 |
39 |
133 |
380 |
475 |
263 |
1 |
| CDI |
0 |
108 |
35 |
191 |
625 |
1522 |
1188 |
3 |
| VCDI |
0 |
98 |
65 |
280 |
1020 |
6980 |
35473 |
48952 |
|
Date: 2023-04-29:
| 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 |
68038 |
16727 |
481 |
679 |
445 |
233 |
68 |
0 |
| OW |
74 |
282 |
125 |
325 |
302 |
185 |
58 |
0 |
| VODI |
0 |
201 |
81 |
222 |
391 |
284 |
159 |
0 |
| ODI |
0 |
111 |
32 |
100 |
365 |
384 |
267 |
0 |
| CDI |
0 |
106 |
30 |
196 |
611 |
1272 |
1239 |
0 |
| VCDI |
0 |
113 |
50 |
272 |
1409 |
6754 |
35289 |
49088 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68038 |
16781 |
497 |
701 |
490 |
253 |
67 |
0 |
| OW |
74 |
263 |
114 |
295 |
280 |
170 |
61 |
0 |
| VODI |
0 |
180 |
82 |
236 |
368 |
283 |
166 |
0 |
| ODI |
0 |
111 |
26 |
106 |
378 |
392 |
276 |
0 |
| CDI |
0 |
101 |
29 |
209 |
703 |
1344 |
1260 |
0 |
| VCDI |
0 |
104 |
51 |
247 |
1304 |
6670 |
35250 |
49088 |
|
Date: 2023-05-01:
| 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 |
67882 |
17287 |
424 |
552 |
336 |
165 |
32 |
0 |
| OW |
73 |
344 |
145 |
292 |
252 |
99 |
26 |
0 |
| VODI |
0 |
170 |
85 |
276 |
354 |
200 |
56 |
0 |
| ODI |
0 |
84 |
33 |
216 |
534 |
372 |
99 |
0 |
| CDI |
0 |
52 |
33 |
259 |
1116 |
3225 |
1205 |
7 |
| VCDI |
0 |
185 |
24 |
185 |
666 |
5097 |
34763 |
49843 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67882 |
17037 |
437 |
672 |
555 |
293 |
67 |
0 |
| OW |
73 |
337 |
116 |
208 |
242 |
192 |
90 |
0 |
| VODI |
0 |
208 |
68 |
204 |
326 |
299 |
196 |
0 |
| ODI |
0 |
119 |
34 |
124 |
300 |
408 |
320 |
0 |
| CDI |
0 |
108 |
31 |
235 |
648 |
1577 |
1380 |
10 |
| VCDI |
0 |
313 |
58 |
337 |
1187 |
6389 |
34128 |
49840 |
|
Date: 2023-05-03:
| 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 |
67935 |
17100 |
481 |
701 |
487 |
158 |
32 |
0 |
| OW |
91 |
209 |
109 |
267 |
282 |
87 |
30 |
0 |
| VODI |
6 |
109 |
61 |
252 |
437 |
259 |
59 |
0 |
| ODI |
0 |
63 |
41 |
282 |
546 |
467 |
148 |
0 |
| CDI |
0 |
77 |
47 |
287 |
1167 |
2881 |
1215 |
12 |
| VCDI |
0 |
88 |
45 |
219 |
1049 |
7207 |
36564 |
45491 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67907 |
16822 |
464 |
773 |
638 |
237 |
74 |
0 |
| OW |
82 |
275 |
89 |
243 |
280 |
192 |
91 |
0 |
| VODI |
17 |
174 |
55 |
188 |
457 |
356 |
197 |
0 |
| ODI |
20 |
79 |
60 |
209 |
434 |
409 |
271 |
0 |
| CDI |
6 |
93 |
47 |
297 |
796 |
1656 |
972 |
11 |
| VCDI |
0 |
203 |
69 |
298 |
1363 |
8209 |
36443 |
45492 |
|
Date: 2023-05-05:
| 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 |
67915 |
16793 |
532 |
867 |
524 |
183 |
45 |
0 |
| OW |
84 |
139 |
98 |
327 |
342 |
141 |
25 |
0 |
| VODI |
0 |
87 |
37 |
271 |
464 |
330 |
109 |
0 |
| ODI |
0 |
55 |
46 |
252 |
560 |
474 |
275 |
0 |
| CDI |
0 |
44 |
32 |
225 |
1279 |
3125 |
1696 |
2 |
| VCDI |
0 |
53 |
27 |
235 |
826 |
7178 |
38968 |
42383 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67867 |
16578 |
483 |
905 |
673 |
275 |
98 |
0 |
| OW |
93 |
222 |
95 |
248 |
320 |
235 |
124 |
0 |
| VODI |
15 |
121 |
80 |
307 |
466 |
393 |
282 |
0 |
| ODI |
23 |
62 |
25 |
221 |
390 |
430 |
340 |
10 |
| CDI |
1 |
54 |
21 |
174 |
875 |
1758 |
1432 |
109 |
| VCDI |
0 |
134 |
68 |
322 |
1271 |
8340 |
38842 |
42266 |
|
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