Validation of sea ice concentration - American sector
Bulletin date: 2023-11-30
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-11-24:
| 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 |
5079 |
4892 |
46 |
63 |
6 |
0 |
0 |
0 |
| OW |
23 |
509 |
88 |
132 |
29 |
8 |
0 |
0 |
| VODI |
1 |
197 |
54 |
135 |
164 |
70 |
9 |
0 |
| ODI |
0 |
88 |
20 |
61 |
162 |
155 |
11 |
0 |
| CDI |
0 |
27 |
27 |
75 |
184 |
822 |
106 |
0 |
| VCDI |
0 |
2 |
7 |
40 |
284 |
3091 |
11151 |
18048 |
|
...date precedes bulletin
|
Date: 2023-11-26:
| 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 |
4853 |
4797 |
55 |
56 |
0 |
0 |
0 |
0 |
| OW |
83 |
532 |
99 |
143 |
20 |
8 |
0 |
0 |
| VODI |
18 |
219 |
78 |
144 |
206 |
52 |
0 |
0 |
| ODI |
0 |
83 |
22 |
77 |
135 |
146 |
3 |
0 |
| CDI |
0 |
84 |
25 |
53 |
112 |
509 |
82 |
1 |
| VCDI |
0 |
20 |
24 |
118 |
333 |
3115 |
9806 |
19755 |
|
...date precedes bulletin
|
Date: 2023-11-28:
| 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 |
4448 |
4678 |
135 |
112 |
37 |
0 |
0 |
0 |
| OW |
24 |
576 |
104 |
173 |
84 |
7 |
0 |
0 |
| VODI |
2 |
162 |
84 |
223 |
221 |
117 |
0 |
0 |
| ODI |
0 |
18 |
12 |
51 |
173 |
231 |
8 |
0 |
| CDI |
0 |
6 |
7 |
31 |
155 |
677 |
163 |
1 |
| VCDI |
0 |
1 |
2 |
20 |
261 |
2563 |
11424 |
18875 |
|
...date precedes bulletin
|
Date: 2023-11-30:
| 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 |
2801 |
5091 |
238 |
472 |
83 |
1 |
0 |
0 |
| OW |
80 |
518 |
146 |
230 |
188 |
71 |
3 |
0 |
| VODI |
2 |
194 |
53 |
156 |
164 |
274 |
51 |
0 |
| ODI |
0 |
81 |
20 |
67 |
120 |
289 |
38 |
0 |
| CDI |
0 |
28 |
19 |
61 |
162 |
529 |
179 |
0 |
| VCDI |
0 |
0 |
2 |
52 |
343 |
2309 |
12775 |
17976 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2796 |
5057 |
245 |
488 |
102 |
2 |
0 |
0 |
| OW |
82 |
523 |
140 |
199 |
166 |
80 |
5 |
0 |
| VODI |
5 |
210 |
53 |
167 |
167 |
265 |
52 |
0 |
| ODI |
0 |
90 |
18 |
63 |
116 |
260 |
32 |
0 |
| CDI |
0 |
32 |
20 |
68 |
163 |
595 |
218 |
0 |
| VCDI |
0 |
0 |
2 |
53 |
346 |
2271 |
12739 |
17976 |
|
Date: 2023-12-02:
| 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 |
1707 |
4617 |
340 |
537 |
10 |
0 |
0 |
0 |
| OW |
38 |
803 |
193 |
575 |
224 |
49 |
1 |
0 |
| VODI |
0 |
151 |
67 |
419 |
367 |
382 |
32 |
0 |
| ODI |
0 |
71 |
32 |
97 |
118 |
382 |
65 |
0 |
| CDI |
0 |
34 |
16 |
63 |
150 |
727 |
336 |
0 |
| VCDI |
0 |
3 |
10 |
75 |
466 |
2509 |
13746 |
16454 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1707 |
4691 |
362 |
629 |
29 |
0 |
0 |
0 |
| OW |
37 |
717 |
164 |
480 |
199 |
58 |
1 |
0 |
| VODI |
1 |
146 |
70 |
415 |
354 |
369 |
32 |
0 |
| ODI |
0 |
82 |
30 |
97 |
124 |
362 |
67 |
0 |
| CDI |
0 |
42 |
23 |
75 |
164 |
781 |
386 |
0 |
| VCDI |
0 |
1 |
9 |
70 |
465 |
2479 |
13694 |
16454 |
|
Date: 2023-12-04:
| 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 |
1926 |
4566 |
155 |
174 |
2 |
0 |
0 |
0 |
| OW |
60 |
1004 |
210 |
314 |
28 |
6 |
0 |
0 |
| VODI |
5 |
182 |
173 |
919 |
270 |
27 |
4 |
0 |
| ODI |
0 |
17 |
14 |
135 |
508 |
181 |
12 |
0 |
| CDI |
0 |
14 |
10 |
34 |
170 |
739 |
112 |
0 |
| VCDI |
0 |
0 |
0 |
19 |
171 |
2280 |
14912 |
16513 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1878 |
4269 |
199 |
331 |
42 |
12 |
0 |
0 |
| OW |
106 |
1084 |
159 |
340 |
47 |
21 |
2 |
0 |
| VODI |
7 |
275 |
142 |
662 |
371 |
172 |
38 |
0 |
| ODI |
0 |
81 |
28 |
146 |
306 |
204 |
94 |
0 |
| CDI |
0 |
57 |
24 |
66 |
154 |
486 |
546 |
1 |
| VCDI |
0 |
17 |
10 |
50 |
229 |
2338 |
14360 |
16512 |
|
Date: 2023-12-06:
| 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 |
2013 |
4097 |
169 |
152 |
29 |
0 |
0 |
0 |
| OW |
101 |
967 |
212 |
242 |
98 |
26 |
0 |
0 |
| VODI |
10 |
221 |
155 |
880 |
369 |
114 |
13 |
0 |
| ODI |
0 |
25 |
9 |
149 |
434 |
171 |
26 |
0 |
| CDI |
0 |
20 |
9 |
33 |
149 |
743 |
318 |
0 |
| VCDI |
0 |
13 |
7 |
36 |
168 |
2016 |
12705 |
18967 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1856 |
3568 |
180 |
155 |
77 |
16 |
0 |
0 |
| OW |
218 |
1208 |
204 |
337 |
77 |
71 |
9 |
0 |
| VODI |
50 |
404 |
119 |
695 |
355 |
204 |
75 |
0 |
| ODI |
0 |
60 |
21 |
162 |
339 |
240 |
87 |
0 |
| CDI |
0 |
57 |
18 |
60 |
189 |
474 |
415 |
0 |
| VCDI |
0 |
46 |
19 |
83 |
210 |
2065 |
12476 |
18967 |
|
Date: 2023-12-08:
| 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 |
2472 |
3226 |
116 |
111 |
30 |
0 |
0 |
0 |
| OW |
172 |
1175 |
228 |
234 |
64 |
9 |
0 |
0 |
| VODI |
63 |
489 |
156 |
779 |
223 |
80 |
2 |
0 |
| ODI |
1 |
46 |
16 |
149 |
313 |
252 |
48 |
0 |
| CDI |
0 |
52 |
7 |
16 |
232 |
906 |
245 |
0 |
| VCDI |
0 |
46 |
23 |
48 |
122 |
1546 |
11173 |
20996 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2335 |
2606 |
129 |
92 |
6 |
0 |
0 |
0 |
| OW |
203 |
1274 |
147 |
277 |
36 |
8 |
0 |
0 |
| VODI |
165 |
863 |
210 |
658 |
302 |
252 |
5 |
0 |
| ODI |
5 |
99 |
22 |
203 |
345 |
314 |
27 |
0 |
| CDI |
0 |
57 |
8 |
44 |
146 |
529 |
241 |
1 |
| VCDI |
0 |
135 |
30 |
63 |
149 |
1690 |
11195 |
20995 |
|
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