Validation of sea ice concentration - Full domain
Bulletin date: 2023-04-06
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-03-31:
| 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 |
58483 |
21661 |
3403 |
691 |
315 |
94 |
30 |
0 |
| OW |
62 |
207 |
236 |
377 |
204 |
94 |
27 |
0 |
| VODI |
0 |
114 |
124 |
253 |
330 |
186 |
117 |
0 |
| ODI |
0 |
39 |
27 |
154 |
337 |
259 |
213 |
0 |
| CDI |
0 |
10 |
3 |
75 |
440 |
706 |
621 |
4 |
| VCDI |
0 |
2 |
0 |
19 |
531 |
3077 |
28687 |
64836 |
|
...date precedes bulletin
|
Date: 2023-04-02:
| 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 |
61047 |
18980 |
3510 |
762 |
354 |
144 |
41 |
0 |
| OW |
54 |
297 |
217 |
301 |
215 |
123 |
56 |
0 |
| VODI |
0 |
128 |
137 |
260 |
292 |
189 |
167 |
0 |
| ODI |
0 |
42 |
64 |
167 |
257 |
307 |
189 |
0 |
| CDI |
0 |
6 |
15 |
107 |
334 |
651 |
610 |
30 |
| VCDI |
0 |
0 |
0 |
34 |
570 |
3431 |
30887 |
62073 |
|
...date precedes bulletin
|
Date: 2023-04-04:
| 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 |
56839 |
22436 |
4597 |
688 |
167 |
47 |
20 |
0 |
| OW |
53 |
147 |
389 |
352 |
191 |
55 |
14 |
0 |
| VODI |
0 |
72 |
189 |
366 |
290 |
162 |
31 |
0 |
| ODI |
0 |
39 |
42 |
177 |
262 |
283 |
115 |
0 |
| CDI |
0 |
15 |
11 |
111 |
345 |
517 |
533 |
21 |
| VCDI |
0 |
8 |
17 |
68 |
475 |
3625 |
25311 |
67968 |
|
...date precedes bulletin
|
Date: 2023-04-06:
| 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 |
57037 |
24093 |
2842 |
636 |
252 |
107 |
27 |
0 |
| OW |
54 |
242 |
287 |
286 |
160 |
98 |
40 |
0 |
| VODI |
0 |
84 |
200 |
290 |
270 |
182 |
75 |
0 |
| ODI |
0 |
26 |
102 |
147 |
227 |
241 |
159 |
0 |
| CDI |
0 |
19 |
55 |
128 |
272 |
451 |
423 |
8 |
| VCDI |
0 |
25 |
47 |
129 |
584 |
3971 |
28891 |
63881 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57037 |
24120 |
2825 |
629 |
254 |
117 |
29 |
0 |
| OW |
54 |
213 |
284 |
271 |
158 |
95 |
38 |
0 |
| VODI |
0 |
85 |
224 |
290 |
256 |
173 |
75 |
0 |
| ODI |
0 |
31 |
95 |
158 |
238 |
241 |
157 |
2 |
| CDI |
0 |
16 |
50 |
135 |
253 |
445 |
434 |
7 |
| VCDI |
0 |
24 |
55 |
133 |
606 |
3979 |
28882 |
63880 |
|
Date: 2023-04-08:
| 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 |
57018 |
21174 |
5896 |
655 |
244 |
78 |
15 |
0 |
| OW |
52 |
228 |
268 |
324 |
202 |
72 |
15 |
0 |
| VODI |
0 |
102 |
158 |
326 |
341 |
152 |
53 |
0 |
| ODI |
0 |
36 |
73 |
171 |
320 |
254 |
97 |
0 |
| CDI |
0 |
40 |
32 |
140 |
367 |
613 |
329 |
8 |
| VCDI |
0 |
22 |
60 |
129 |
725 |
4979 |
32557 |
58723 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
57018 |
21177 |
5901 |
667 |
257 |
89 |
15 |
0 |
| OW |
52 |
214 |
240 |
296 |
173 |
69 |
15 |
0 |
| VODI |
0 |
114 |
166 |
327 |
336 |
154 |
64 |
0 |
| ODI |
0 |
38 |
82 |
166 |
325 |
253 |
87 |
0 |
| CDI |
0 |
33 |
40 |
137 |
326 |
567 |
306 |
9 |
| VCDI |
0 |
26 |
58 |
152 |
782 |
5016 |
32579 |
58722 |
|
Date: 2023-04-10:
| 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 |
59950 |
20389 |
3412 |
873 |
292 |
44 |
2 |
0 |
| OW |
52 |
305 |
209 |
369 |
221 |
64 |
14 |
0 |
| VODI |
0 |
138 |
134 |
315 |
434 |
133 |
41 |
0 |
| ODI |
0 |
55 |
63 |
195 |
480 |
316 |
110 |
0 |
| CDI |
0 |
49 |
18 |
82 |
416 |
1120 |
768 |
0 |
| VCDI |
0 |
21 |
27 |
71 |
564 |
4942 |
30364 |
59996 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
59950 |
20322 |
3459 |
956 |
382 |
104 |
22 |
0 |
| OW |
52 |
278 |
130 |
297 |
237 |
89 |
31 |
0 |
| VODI |
0 |
201 |
104 |
225 |
368 |
202 |
68 |
0 |
| ODI |
0 |
80 |
81 |
189 |
299 |
263 |
179 |
0 |
| CDI |
0 |
60 |
46 |
131 |
414 |
916 |
777 |
29 |
| VCDI |
0 |
16 |
43 |
107 |
707 |
5045 |
30222 |
59967 |
|
Date: 2023-04-12:
| 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 |
63946 |
18504 |
1409 |
1025 |
303 |
82 |
23 |
0 |
| OW |
52 |
276 |
101 |
356 |
273 |
90 |
50 |
0 |
| VODI |
0 |
142 |
115 |
221 |
411 |
263 |
92 |
0 |
| ODI |
0 |
55 |
57 |
155 |
303 |
380 |
132 |
0 |
| CDI |
0 |
64 |
27 |
91 |
446 |
1166 |
890 |
6 |
| VCDI |
0 |
11 |
13 |
79 |
489 |
4891 |
30599 |
59460 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
63946 |
18314 |
1387 |
1021 |
377 |
132 |
72 |
0 |
| OW |
52 |
308 |
82 |
304 |
233 |
140 |
63 |
0 |
| VODI |
0 |
217 |
84 |
187 |
332 |
306 |
124 |
0 |
| ODI |
0 |
98 |
85 |
153 |
241 |
365 |
193 |
0 |
| CDI |
0 |
86 |
54 |
163 |
468 |
932 |
961 |
7 |
| VCDI |
0 |
29 |
30 |
99 |
574 |
4997 |
30373 |
59459 |
|
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 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
62843 |
19688 |
1587 |
893 |
382 |
139 |
57 |
0 |
| OW |
52 |
275 |
122 |
265 |
233 |
157 |
69 |
0 |
| VODI |
0 |
190 |
94 |
203 |
317 |
296 |
144 |
0 |
| ODI |
0 |
124 |
77 |
150 |
235 |
331 |
157 |
0 |
| CDI |
0 |
90 |
57 |
129 |
372 |
754 |
819 |
13 |
| VCDI |
0 |
26 |
21 |
119 |
639 |
4662 |
29382 |
60885 |
|
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