Validation of sea ice concentration - American sector
Bulletin date: 2024-10-24
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-10-18:
| 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 |
15838 |
6280 |
131 |
156 |
39 |
0 |
0 |
0 |
| OW |
4 |
660 |
158 |
295 |
216 |
41 |
0 |
0 |
| VODI |
0 |
148 |
112 |
342 |
368 |
209 |
4 |
0 |
| ODI |
0 |
9 |
10 |
119 |
325 |
471 |
11 |
0 |
| CDI |
0 |
13 |
1 |
33 |
376 |
1116 |
251 |
0 |
| VCDI |
0 |
3 |
7 |
43 |
90 |
2807 |
10771 |
4409 |
|
...date precedes bulletin
|
Date: 2024-10-20:
| 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 |
16141 |
5135 |
79 |
33 |
4 |
0 |
0 |
0 |
| OW |
4 |
1049 |
221 |
351 |
107 |
21 |
0 |
0 |
| VODI |
0 |
283 |
147 |
483 |
300 |
230 |
11 |
0 |
| ODI |
0 |
30 |
25 |
180 |
293 |
389 |
59 |
0 |
| CDI |
0 |
2 |
1 |
46 |
279 |
773 |
287 |
0 |
| VCDI |
0 |
0 |
2 |
33 |
140 |
2743 |
10148 |
5837 |
|
...date precedes bulletin
|
Date: 2024-10-22:
| 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 |
16421 |
5298 |
59 |
78 |
18 |
0 |
0 |
0 |
| OW |
0 |
1378 |
214 |
228 |
40 |
0 |
0 |
0 |
| VODI |
0 |
186 |
138 |
423 |
242 |
49 |
0 |
0 |
| ODI |
0 |
21 |
16 |
172 |
492 |
118 |
0 |
0 |
| CDI |
0 |
3 |
8 |
61 |
920 |
389 |
0 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
773 |
2684 |
11055 |
4378 |
|
...date precedes bulletin
|
Date: 2024-10-24:
| 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 |
15668 |
4985 |
106 |
174 |
51 |
0 |
0 |
0 |
| OW |
23 |
841 |
164 |
331 |
263 |
2 |
0 |
0 |
| VODI |
0 |
100 |
98 |
320 |
509 |
143 |
0 |
0 |
| ODI |
0 |
6 |
17 |
83 |
472 |
356 |
7 |
0 |
| CDI |
0 |
0 |
6 |
34 |
237 |
1100 |
74 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
84 |
3589 |
10572 |
5448 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15682 |
5108 |
123 |
233 |
91 |
0 |
0 |
0 |
| OW |
9 |
740 |
145 |
232 |
239 |
5 |
0 |
0 |
| VODI |
0 |
81 |
107 |
374 |
514 |
115 |
0 |
0 |
| ODI |
0 |
2 |
9 |
79 |
463 |
403 |
9 |
0 |
| CDI |
0 |
1 |
7 |
24 |
222 |
1133 |
76 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
87 |
3534 |
10568 |
5448 |
|
Date: 2024-10-26:
| 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 |
13811 |
5328 |
117 |
71 |
7 |
2 |
0 |
0 |
| OW |
0 |
909 |
179 |
275 |
296 |
74 |
0 |
0 |
| VODI |
0 |
140 |
95 |
387 |
479 |
283 |
18 |
0 |
| ODI |
0 |
17 |
15 |
113 |
353 |
493 |
92 |
0 |
| CDI |
0 |
2 |
7 |
41 |
162 |
1039 |
470 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
26 |
1968 |
12021 |
6575 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13811 |
5536 |
141 |
116 |
75 |
14 |
0 |
0 |
| OW |
0 |
717 |
145 |
264 |
272 |
93 |
1 |
0 |
| VODI |
0 |
128 |
106 |
368 |
447 |
264 |
12 |
0 |
| ODI |
0 |
13 |
14 |
103 |
324 |
548 |
94 |
0 |
| CDI |
0 |
2 |
7 |
36 |
175 |
1018 |
582 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
30 |
1922 |
11912 |
6575 |
|
Date: 2024-10-28:
| 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 |
12765 |
5445 |
114 |
41 |
1 |
0 |
0 |
0 |
| OW |
2 |
784 |
183 |
179 |
13 |
4 |
0 |
0 |
| VODI |
0 |
138 |
150 |
586 |
245 |
19 |
0 |
0 |
| ODI |
0 |
2 |
4 |
155 |
711 |
598 |
35 |
0 |
| CDI |
0 |
4 |
2 |
4 |
279 |
1305 |
343 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
2 |
1519 |
14247 |
5985 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12757 |
5003 |
152 |
137 |
27 |
3 |
0 |
0 |
| OW |
10 |
1046 |
152 |
230 |
116 |
88 |
2 |
0 |
| VODI |
0 |
294 |
118 |
401 |
418 |
396 |
8 |
0 |
| ODI |
0 |
19 |
24 |
161 |
386 |
567 |
20 |
0 |
| CDI |
0 |
11 |
6 |
28 |
228 |
719 |
346 |
0 |
| VCDI |
0 |
0 |
1 |
10 |
76 |
1672 |
14249 |
5985 |
|
Date: 2024-10-30:
| 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 |
11805 |
5385 |
157 |
177 |
3 |
1 |
0 |
0 |
| OW |
8 |
715 |
200 |
294 |
55 |
0 |
0 |
0 |
| VODI |
0 |
116 |
109 |
462 |
357 |
22 |
1 |
0 |
| ODI |
0 |
6 |
18 |
146 |
587 |
137 |
10 |
0 |
| CDI |
0 |
0 |
2 |
31 |
560 |
944 |
268 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
1920 |
13683 |
7663 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11813 |
4691 |
174 |
259 |
55 |
0 |
0 |
0 |
| OW |
0 |
1141 |
126 |
255 |
137 |
1 |
0 |
0 |
| VODI |
0 |
337 |
137 |
363 |
433 |
187 |
2 |
0 |
| ODI |
0 |
42 |
33 |
144 |
609 |
429 |
55 |
0 |
| CDI |
0 |
9 |
9 |
65 |
275 |
848 |
285 |
0 |
| VCDI |
0 |
2 |
7 |
24 |
77 |
1559 |
13620 |
7663 |
|
Date: 2024-11-01:
| 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 |
11094 |
5178 |
219 |
247 |
48 |
4 |
0 |
0 |
| OW |
10 |
614 |
190 |
388 |
124 |
21 |
0 |
0 |
| VODI |
0 |
157 |
92 |
361 |
452 |
130 |
0 |
0 |
| ODI |
0 |
11 |
13 |
115 |
394 |
244 |
7 |
0 |
| CDI |
0 |
4 |
12 |
40 |
405 |
542 |
231 |
0 |
| VCDI |
0 |
0 |
0 |
12 |
113 |
2091 |
11729 |
10574 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11103 |
4706 |
254 |
400 |
97 |
4 |
0 |
0 |
| OW |
1 |
718 |
108 |
265 |
164 |
20 |
0 |
0 |
| VODI |
0 |
436 |
88 |
279 |
415 |
205 |
15 |
0 |
| ODI |
0 |
83 |
50 |
130 |
376 |
423 |
73 |
0 |
| CDI |
0 |
12 |
14 |
57 |
353 |
752 |
423 |
0 |
| VCDI |
0 |
9 |
12 |
32 |
131 |
1628 |
11456 |
10574 |
|
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