Validation of sea ice concentration - Full domain
Bulletin date: 2023-04-20
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-04-14:
| 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 |
62843 |
19889 |
1629 |
854 |
320 |
72 |
23 |
0 |
| OW |
52 |
251 |
139 |
337 |
262 |
120 |
52 |
0 |
| VODI |
0 |
124 |
113 |
264 |
364 |
235 |
87 |
0 |
| ODI |
0 |
55 |
47 |
145 |
320 |
333 |
136 |
0 |
| CDI |
0 |
62 |
20 |
83 |
362 |
1009 |
1039 |
10 |
| VCDI |
0 |
12 |
10 |
76 |
550 |
4570 |
29291 |
60888 |
|
...date precedes bulletin
|
Date: 2023-04-16:
| 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 |
61932 |
19893 |
2646 |
873 |
350 |
98 |
41 |
0 |
| OW |
52 |
274 |
181 |
282 |
207 |
115 |
58 |
0 |
| VODI |
0 |
167 |
127 |
287 |
314 |
193 |
72 |
0 |
| ODI |
0 |
85 |
55 |
165 |
246 |
316 |
155 |
0 |
| CDI |
0 |
54 |
36 |
126 |
434 |
1001 |
901 |
9 |
| VCDI |
0 |
9 |
22 |
146 |
899 |
5726 |
27607 |
60894 |
|
...date precedes bulletin
|
Date: 2023-04-18:
| 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 |
61245 |
19877 |
3776 |
870 |
270 |
36 |
29 |
0 |
| OW |
51 |
209 |
247 |
393 |
235 |
55 |
31 |
0 |
| VODI |
0 |
82 |
131 |
337 |
387 |
183 |
19 |
0 |
| ODI |
0 |
35 |
31 |
155 |
379 |
389 |
126 |
0 |
| CDI |
0 |
20 |
24 |
128 |
489 |
1055 |
823 |
6 |
| VCDI |
0 |
17 |
25 |
201 |
811 |
5589 |
28312 |
59970 |
|
...date precedes bulletin
|
Date: 2023-04-20:
| 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 |
59927 |
21011 |
3849 |
1016 |
263 |
57 |
53 |
0 |
| OW |
51 |
282 |
197 |
352 |
290 |
91 |
33 |
0 |
| VODI |
0 |
86 |
112 |
293 |
365 |
246 |
97 |
0 |
| ODI |
0 |
31 |
44 |
254 |
333 |
318 |
233 |
0 |
| CDI |
0 |
24 |
25 |
193 |
611 |
856 |
941 |
11 |
| VCDI |
0 |
10 |
10 |
189 |
1401 |
5553 |
30811 |
56529 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59927 |
21150 |
3885 |
1030 |
292 |
65 |
57 |
0 |
| OW |
51 |
159 |
158 |
356 |
266 |
83 |
30 |
0 |
| VODI |
0 |
71 |
110 |
265 |
346 |
233 |
87 |
0 |
| ODI |
0 |
28 |
45 |
245 |
327 |
326 |
241 |
0 |
| CDI |
0 |
24 |
25 |
194 |
606 |
817 |
952 |
12 |
| VCDI |
0 |
12 |
14 |
207 |
1426 |
5597 |
30801 |
56528 |
|
Date: 2023-04-22:
| 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 |
61447 |
20457 |
2692 |
963 |
333 |
71 |
54 |
0 |
| OW |
51 |
267 |
150 |
366 |
280 |
131 |
31 |
0 |
| VODI |
0 |
154 |
121 |
276 |
326 |
266 |
94 |
0 |
| ODI |
0 |
58 |
54 |
207 |
312 |
400 |
208 |
0 |
| CDI |
0 |
40 |
29 |
245 |
616 |
1292 |
1123 |
6 |
| VCDI |
0 |
9 |
34 |
204 |
1136 |
6971 |
34859 |
50715 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61447 |
20601 |
2726 |
1047 |
350 |
85 |
61 |
0 |
| OW |
51 |
182 |
160 |
316 |
268 |
123 |
30 |
0 |
| VODI |
0 |
103 |
85 |
245 |
318 |
258 |
90 |
0 |
| ODI |
0 |
53 |
48 |
196 |
295 |
374 |
193 |
0 |
| CDI |
0 |
34 |
25 |
234 |
608 |
1294 |
1110 |
4 |
| VCDI |
0 |
12 |
36 |
223 |
1164 |
6997 |
34885 |
50717 |
|
Date: 2023-04-24:
| 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 |
61610 |
20278 |
2654 |
1103 |
345 |
134 |
57 |
0 |
| OW |
59 |
169 |
137 |
424 |
341 |
178 |
40 |
0 |
| VODI |
5 |
86 |
84 |
318 |
318 |
274 |
139 |
0 |
| ODI |
5 |
49 |
56 |
219 |
395 |
393 |
269 |
0 |
| CDI |
5 |
24 |
57 |
292 |
637 |
1270 |
1230 |
8 |
| VCDI |
1 |
3 |
38 |
330 |
1290 |
7871 |
34488 |
49365 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
61603 |
20264 |
2644 |
1168 |
454 |
156 |
70 |
0 |
| OW |
63 |
162 |
126 |
337 |
271 |
181 |
32 |
0 |
| VODI |
7 |
92 |
99 |
272 |
301 |
239 |
141 |
0 |
| ODI |
6 |
45 |
58 |
231 |
357 |
403 |
248 |
0 |
| CDI |
5 |
37 |
50 |
312 |
626 |
1315 |
1294 |
6 |
| VCDI |
1 |
9 |
49 |
366 |
1317 |
7826 |
34438 |
49367 |
|
Date: 2023-04-26:
| 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 |
67553 |
16630 |
538 |
887 |
497 |
207 |
71 |
0 |
| OW |
59 |
226 |
86 |
301 |
346 |
182 |
37 |
0 |
| VODI |
0 |
183 |
46 |
251 |
397 |
332 |
127 |
0 |
| ODI |
0 |
99 |
43 |
144 |
377 |
437 |
299 |
0 |
| CDI |
0 |
100 |
54 |
180 |
557 |
1366 |
1388 |
4 |
| VCDI |
0 |
73 |
66 |
276 |
1067 |
7038 |
33812 |
50712 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67553 |
16566 |
531 |
885 |
572 |
242 |
73 |
0 |
| OW |
59 |
244 |
90 |
270 |
309 |
185 |
29 |
0 |
| VODI |
0 |
189 |
47 |
234 |
336 |
320 |
115 |
0 |
| ODI |
0 |
93 |
46 |
164 |
365 |
391 |
243 |
0 |
| CDI |
0 |
125 |
37 |
191 |
593 |
1440 |
1503 |
2 |
| VCDI |
0 |
94 |
82 |
295 |
1066 |
6984 |
33771 |
50714 |
|
Date: 2023-04-28:
| 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 |
67529 |
17035 |
505 |
747 |
463 |
178 |
50 |
0 |
| OW |
59 |
277 |
111 |
331 |
339 |
169 |
34 |
0 |
| VODI |
0 |
199 |
70 |
255 |
416 |
297 |
139 |
0 |
| ODI |
0 |
121 |
34 |
131 |
385 |
445 |
229 |
0 |
| CDI |
0 |
112 |
31 |
183 |
641 |
1363 |
1089 |
0 |
| VCDI |
0 |
102 |
65 |
287 |
1207 |
7385 |
34110 |
49925 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67529 |
16962 |
489 |
765 |
545 |
196 |
46 |
0 |
| OW |
59 |
301 |
108 |
287 |
296 |
170 |
35 |
0 |
| VODI |
0 |
217 |
85 |
225 |
373 |
286 |
125 |
0 |
| ODI |
0 |
112 |
35 |
163 |
300 |
376 |
179 |
0 |
| CDI |
0 |
135 |
42 |
237 |
661 |
1523 |
1210 |
0 |
| VCDI |
0 |
119 |
57 |
257 |
1276 |
7286 |
34056 |
49925 |
|
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