Validation of sea ice concentration - European sector
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 |
20030 |
3795 |
1015 |
250 |
81 |
38 |
0 |
| OW |
51 |
288 |
179 |
306 |
279 |
99 |
27 |
0 |
| VODI |
0 |
152 |
90 |
250 |
311 |
209 |
103 |
0 |
| ODI |
0 |
48 |
40 |
162 |
276 |
326 |
192 |
0 |
| CDI |
0 |
32 |
18 |
122 |
415 |
832 |
652 |
0 |
| VCDI |
0 |
13 |
17 |
92 |
561 |
4154 |
8664 |
4206 |
|
...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 |
21293 |
2677 |
1057 |
389 |
93 |
60 |
0 |
| OW |
51 |
214 |
161 |
344 |
288 |
151 |
37 |
0 |
| VODI |
0 |
116 |
128 |
228 |
281 |
289 |
106 |
0 |
| ODI |
0 |
36 |
33 |
156 |
252 |
372 |
205 |
0 |
| CDI |
0 |
21 |
14 |
130 |
374 |
1117 |
846 |
0 |
| VCDI |
0 |
9 |
29 |
128 |
518 |
3633 |
8204 |
4705 |
|
...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 |
16462 |
507 |
841 |
480 |
189 |
73 |
0 |
| OW |
59 |
206 |
73 |
268 |
354 |
158 |
34 |
0 |
| VODI |
0 |
120 |
41 |
217 |
336 |
316 |
130 |
0 |
| ODI |
0 |
47 |
33 |
89 |
329 |
401 |
237 |
0 |
| CDI |
0 |
33 |
20 |
105 |
379 |
896 |
859 |
0 |
| VCDI |
0 |
13 |
23 |
96 |
531 |
3516 |
7903 |
5104 |
|
...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 |
16861 |
498 |
798 |
487 |
197 |
62 |
0 |
| OW |
59 |
207 |
95 |
304 |
345 |
149 |
23 |
0 |
| VODI |
0 |
107 |
39 |
251 |
408 |
302 |
113 |
0 |
| ODI |
0 |
52 |
30 |
116 |
317 |
405 |
196 |
0 |
| CDI |
0 |
37 |
14 |
85 |
359 |
1067 |
792 |
0 |
| VCDI |
0 |
26 |
27 |
124 |
333 |
3032 |
8216 |
5223 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67344 |
16887 |
514 |
836 |
534 |
211 |
64 |
0 |
| OW |
59 |
190 |
90 |
264 |
312 |
139 |
28 |
0 |
| VODI |
0 |
97 |
36 |
264 |
379 |
313 |
104 |
0 |
| ODI |
0 |
56 |
20 |
106 |
334 |
394 |
200 |
0 |
| CDI |
0 |
33 |
17 |
86 |
356 |
1070 |
793 |
0 |
| VCDI |
0 |
27 |
26 |
122 |
334 |
3025 |
8213 |
5223 |
|
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 |
16609 |
463 |
666 |
443 |
233 |
68 |
0 |
| OW |
74 |
232 |
105 |
293 |
292 |
180 |
58 |
0 |
| VODI |
0 |
129 |
58 |
202 |
362 |
271 |
153 |
0 |
| ODI |
0 |
53 |
24 |
88 |
309 |
338 |
226 |
0 |
| CDI |
0 |
38 |
20 |
112 |
322 |
947 |
775 |
0 |
| VCDI |
0 |
23 |
21 |
93 |
453 |
3377 |
8000 |
4952 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
68038 |
16653 |
474 |
683 |
486 |
253 |
67 |
0 |
| OW |
74 |
207 |
95 |
275 |
271 |
165 |
61 |
0 |
| VODI |
0 |
111 |
63 |
209 |
347 |
270 |
159 |
0 |
| ODI |
0 |
55 |
17 |
88 |
306 |
343 |
220 |
0 |
| CDI |
0 |
35 |
22 |
107 |
336 |
985 |
800 |
0 |
| VCDI |
0 |
23 |
20 |
92 |
435 |
3330 |
7973 |
4952 |
|
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 |
17046 |
400 |
534 |
321 |
165 |
32 |
0 |
| OW |
73 |
249 |
135 |
275 |
245 |
97 |
26 |
0 |
| VODI |
0 |
101 |
69 |
236 |
322 |
185 |
54 |
0 |
| ODI |
0 |
27 |
20 |
143 |
420 |
321 |
82 |
0 |
| CDI |
0 |
5 |
6 |
93 |
555 |
2293 |
892 |
0 |
| VCDI |
0 |
0 |
0 |
24 |
164 |
2545 |
7959 |
5104 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67882 |
16897 |
416 |
654 |
540 |
293 |
67 |
0 |
| OW |
73 |
263 |
107 |
191 |
231 |
184 |
89 |
0 |
| VODI |
0 |
132 |
59 |
188 |
292 |
279 |
182 |
0 |
| ODI |
0 |
75 |
18 |
88 |
264 |
347 |
253 |
0 |
| CDI |
0 |
40 |
18 |
99 |
296 |
1133 |
945 |
0 |
| VCDI |
0 |
21 |
12 |
85 |
404 |
3370 |
7509 |
5104 |
|
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 |
16847 |
454 |
676 |
481 |
158 |
32 |
0 |
| OW |
91 |
129 |
99 |
252 |
271 |
85 |
30 |
0 |
| VODI |
6 |
39 |
42 |
213 |
389 |
243 |
43 |
0 |
| ODI |
0 |
10 |
23 |
180 |
412 |
400 |
102 |
0 |
| CDI |
0 |
13 |
15 |
97 |
605 |
2187 |
753 |
0 |
| VCDI |
0 |
0 |
3 |
27 |
240 |
3069 |
6591 |
5858 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67907 |
16686 |
449 |
757 |
638 |
237 |
74 |
0 |
| OW |
82 |
207 |
76 |
228 |
266 |
189 |
81 |
0 |
| VODI |
17 |
98 |
45 |
166 |
412 |
330 |
151 |
0 |
| ODI |
20 |
23 |
36 |
145 |
346 |
333 |
201 |
0 |
| CDI |
6 |
16 |
16 |
111 |
375 |
1178 |
565 |
0 |
| VCDI |
0 |
8 |
14 |
38 |
361 |
3875 |
6479 |
5858 |
|
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 |
16589 |
509 |
846 |
524 |
183 |
45 |
0 |
| OW |
84 |
64 |
68 |
296 |
328 |
136 |
24 |
0 |
| VODI |
0 |
21 |
22 |
226 |
428 |
316 |
79 |
0 |
| ODI |
0 |
16 |
22 |
145 |
433 |
378 |
217 |
0 |
| CDI |
0 |
0 |
0 |
58 |
689 |
2309 |
1066 |
0 |
| VCDI |
0 |
0 |
0 |
22 |
183 |
2635 |
6342 |
5882 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
67867 |
16467 |
476 |
904 |
672 |
275 |
93 |
0 |
| OW |
93 |
152 |
75 |
229 |
308 |
226 |
101 |
0 |
| VODI |
15 |
38 |
45 |
234 |
408 |
330 |
216 |
0 |
| ODI |
23 |
24 |
13 |
139 |
304 |
327 |
264 |
0 |
| CDI |
1 |
2 |
4 |
55 |
484 |
1291 |
824 |
0 |
| VCDI |
0 |
7 |
8 |
32 |
409 |
3508 |
6275 |
5882 |
|
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