Validation of sea ice concentration - American sector
Bulletin date: 2024-09-26
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-09-20:
| 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 |
20802 |
6119 |
161 |
220 |
8 |
0 |
0 |
0 |
| OW |
111 |
568 |
223 |
573 |
289 |
22 |
0 |
0 |
| VODI |
4 |
74 |
33 |
399 |
671 |
375 |
6 |
0 |
| ODI |
0 |
16 |
9 |
75 |
943 |
1052 |
59 |
0 |
| CDI |
0 |
14 |
6 |
39 |
295 |
2733 |
810 |
0 |
| VCDI |
0 |
2 |
0 |
1 |
22 |
3016 |
5569 |
547 |
|
...date precedes bulletin
|
Date: 2024-09-22:
| 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 |
20382 |
6167 |
195 |
247 |
52 |
0 |
0 |
0 |
| OW |
113 |
640 |
193 |
538 |
387 |
18 |
0 |
0 |
| VODI |
3 |
96 |
56 |
279 |
874 |
369 |
14 |
0 |
| ODI |
0 |
31 |
8 |
47 |
690 |
1166 |
45 |
0 |
| CDI |
0 |
20 |
10 |
44 |
157 |
2630 |
740 |
0 |
| VCDI |
0 |
6 |
0 |
6 |
32 |
1028 |
7512 |
1071 |
|
...date precedes bulletin
|
Date: 2024-09-24:
| 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 |
20901 |
6183 |
100 |
62 |
6 |
0 |
0 |
0 |
| OW |
19 |
557 |
212 |
258 |
70 |
1 |
0 |
0 |
| VODI |
0 |
71 |
83 |
699 |
311 |
64 |
0 |
0 |
| ODI |
0 |
20 |
5 |
112 |
693 |
534 |
4 |
0 |
| CDI |
2 |
6 |
5 |
17 |
109 |
2787 |
1001 |
0 |
| VCDI |
0 |
12 |
3 |
9 |
25 |
1083 |
8878 |
964 |
|
...date precedes bulletin
|
Date: 2024-09-26:
| 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 |
21520 |
5543 |
55 |
28 |
20 |
0 |
0 |
0 |
| OW |
31 |
690 |
181 |
193 |
65 |
5 |
0 |
0 |
| VODI |
0 |
132 |
123 |
605 |
338 |
31 |
0 |
0 |
| ODI |
0 |
15 |
18 |
166 |
578 |
417 |
10 |
0 |
| CDI |
3 |
7 |
3 |
15 |
304 |
2429 |
395 |
0 |
| VCDI |
0 |
9 |
4 |
10 |
24 |
2274 |
6583 |
3042 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21520 |
5534 |
79 |
57 |
13 |
0 |
0 |
0 |
| OW |
31 |
679 |
167 |
176 |
72 |
4 |
0 |
0 |
| VODI |
0 |
147 |
109 |
525 |
291 |
25 |
0 |
0 |
| ODI |
0 |
20 |
21 |
234 |
601 |
322 |
5 |
0 |
| CDI |
3 |
8 |
4 |
15 |
332 |
2591 |
445 |
0 |
| VCDI |
0 |
8 |
4 |
10 |
20 |
2214 |
6538 |
3042 |
|
Date: 2024-09-28:
| 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 |
20999 |
5887 |
72 |
54 |
25 |
0 |
0 |
0 |
| OW |
28 |
619 |
182 |
358 |
115 |
1 |
0 |
0 |
| VODI |
0 |
179 |
76 |
398 |
468 |
187 |
0 |
0 |
| ODI |
1 |
51 |
23 |
167 |
490 |
485 |
25 |
0 |
| CDI |
0 |
8 |
4 |
53 |
477 |
1815 |
563 |
0 |
| VCDI |
0 |
7 |
0 |
2 |
9 |
2382 |
7975 |
1681 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21008 |
5866 |
106 |
106 |
18 |
0 |
0 |
0 |
| OW |
19 |
590 |
136 |
294 |
150 |
1 |
0 |
0 |
| VODI |
0 |
211 |
79 |
364 |
400 |
141 |
1 |
0 |
| ODI |
1 |
67 |
30 |
214 |
462 |
438 |
25 |
0 |
| CDI |
0 |
10 |
6 |
50 |
545 |
1915 |
602 |
0 |
| VCDI |
0 |
7 |
0 |
4 |
9 |
2375 |
7935 |
1681 |
|
Date: 2024-09-30:
| 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 |
21084 |
5775 |
24 |
12 |
1 |
0 |
0 |
0 |
| OW |
8 |
637 |
198 |
181 |
34 |
10 |
0 |
0 |
| VODI |
0 |
80 |
119 |
619 |
226 |
41 |
1 |
0 |
| ODI |
0 |
6 |
11 |
149 |
613 |
318 |
34 |
0 |
| CDI |
0 |
7 |
0 |
22 |
224 |
1310 |
224 |
0 |
| VCDI |
0 |
4 |
0 |
2 |
31 |
2177 |
10311 |
1373 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21070 |
5189 |
44 |
47 |
23 |
8 |
0 |
0 |
| OW |
22 |
964 |
161 |
223 |
81 |
76 |
0 |
0 |
| VODI |
0 |
279 |
88 |
492 |
288 |
126 |
23 |
0 |
| ODI |
0 |
54 |
44 |
172 |
514 |
344 |
62 |
0 |
| CDI |
0 |
17 |
15 |
33 |
171 |
1274 |
808 |
0 |
| VCDI |
0 |
6 |
0 |
18 |
52 |
2028 |
9677 |
1373 |
|
Date: 2024-10-02:
| 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 |
20806 |
5965 |
41 |
37 |
5 |
0 |
0 |
0 |
| OW |
27 |
711 |
144 |
175 |
73 |
17 |
0 |
0 |
| VODI |
0 |
156 |
143 |
424 |
186 |
119 |
0 |
0 |
| ODI |
0 |
7 |
14 |
186 |
402 |
267 |
29 |
0 |
| CDI |
0 |
8 |
0 |
12 |
282 |
922 |
166 |
0 |
| VCDI |
0 |
6 |
1 |
13 |
61 |
3383 |
10314 |
764 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20784 |
5151 |
20 |
19 |
0 |
0 |
0 |
0 |
| OW |
49 |
1238 |
138 |
182 |
106 |
121 |
7 |
0 |
| VODI |
0 |
378 |
145 |
396 |
255 |
174 |
52 |
0 |
| ODI |
0 |
59 |
32 |
212 |
358 |
298 |
81 |
0 |
| CDI |
0 |
18 |
6 |
10 |
174 |
1187 |
367 |
0 |
| VCDI |
0 |
9 |
2 |
28 |
116 |
2928 |
10002 |
764 |
|
Date: 2024-10-04:
| 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 |
20541 |
6119 |
82 |
49 |
3 |
0 |
0 |
0 |
| OW |
43 |
748 |
168 |
335 |
42 |
7 |
0 |
0 |
| VODI |
0 |
178 |
121 |
484 |
220 |
58 |
0 |
0 |
| ODI |
0 |
14 |
22 |
231 |
390 |
200 |
20 |
0 |
| CDI |
0 |
21 |
3 |
44 |
279 |
691 |
194 |
0 |
| VCDI |
0 |
7 |
2 |
28 |
140 |
2569 |
8667 |
3146 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20519 |
5225 |
61 |
65 |
0 |
0 |
0 |
0 |
| OW |
65 |
1269 |
140 |
319 |
84 |
39 |
0 |
0 |
| VODI |
0 |
451 |
131 |
419 |
247 |
135 |
20 |
0 |
| ODI |
0 |
82 |
51 |
220 |
323 |
225 |
67 |
0 |
| CDI |
0 |
17 |
8 |
89 |
236 |
669 |
453 |
0 |
| VCDI |
0 |
43 |
7 |
59 |
184 |
2457 |
8341 |
3146 |
|
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