Validation of sea ice concentration - American sector
Bulletin date: 2023-09-28
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-09-22:
| 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 |
23024 |
6294 |
69 |
27 |
0 |
0 |
0 |
0 |
| OW |
38 |
1044 |
237 |
207 |
4 |
0 |
0 |
0 |
| VODI |
0 |
177 |
235 |
874 |
331 |
17 |
0 |
0 |
| ODI |
0 |
4 |
23 |
481 |
1352 |
407 |
14 |
0 |
| CDI |
0 |
10 |
2 |
33 |
563 |
3466 |
649 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
2 |
2374 |
3908 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-24:
| 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 |
22182 |
6635 |
153 |
119 |
1 |
0 |
0 |
0 |
| OW |
18 |
720 |
238 |
524 |
65 |
1 |
0 |
0 |
| VODI |
0 |
110 |
158 |
698 |
544 |
50 |
0 |
0 |
| ODI |
0 |
12 |
12 |
382 |
893 |
697 |
9 |
0 |
| CDI |
0 |
5 |
3 |
30 |
328 |
3810 |
867 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
3343 |
3259 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-26:
| 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 |
21582 |
6662 |
235 |
258 |
16 |
0 |
0 |
0 |
| OW |
2 |
409 |
250 |
440 |
54 |
0 |
0 |
0 |
| VODI |
0 |
46 |
100 |
692 |
290 |
4 |
0 |
0 |
| ODI |
0 |
3 |
6 |
303 |
850 |
114 |
1 |
0 |
| CDI |
0 |
9 |
3 |
21 |
562 |
1497 |
308 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
74 |
4560 |
6512 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-28:
| 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 |
22077 |
6561 |
139 |
95 |
3 |
0 |
0 |
0 |
| OW |
5 |
632 |
206 |
285 |
35 |
5 |
0 |
0 |
| VODI |
0 |
125 |
154 |
620 |
164 |
13 |
0 |
0 |
| ODI |
0 |
3 |
17 |
351 |
761 |
36 |
2 |
0 |
| CDI |
0 |
0 |
0 |
58 |
687 |
743 |
695 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
109 |
3023 |
8255 |
7 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
22076 |
6645 |
159 |
112 |
6 |
0 |
0 |
0 |
| OW |
6 |
558 |
203 |
303 |
37 |
8 |
0 |
0 |
| VODI |
0 |
114 |
141 |
613 |
200 |
9 |
0 |
0 |
| ODI |
0 |
4 |
13 |
326 |
769 |
54 |
2 |
0 |
| CDI |
0 |
0 |
0 |
55 |
664 |
828 |
756 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
83 |
2921 |
8194 |
7 |
|
Date: 2023-09-30:
| 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 |
21822 |
6631 |
124 |
103 |
0 |
0 |
0 |
0 |
| OW |
10 |
692 |
230 |
274 |
63 |
19 |
0 |
0 |
| VODI |
0 |
121 |
181 |
711 |
199 |
5 |
0 |
0 |
| ODI |
0 |
6 |
11 |
454 |
731 |
27 |
0 |
0 |
| CDI |
0 |
0 |
1 |
52 |
689 |
1090 |
243 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
29 |
3635 |
7689 |
24 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21818 |
6665 |
156 |
128 |
9 |
0 |
0 |
0 |
| OW |
14 |
675 |
216 |
279 |
62 |
21 |
0 |
0 |
| VODI |
0 |
105 |
164 |
721 |
237 |
2 |
0 |
0 |
| ODI |
0 |
5 |
10 |
428 |
763 |
31 |
0 |
0 |
| CDI |
0 |
0 |
1 |
38 |
598 |
1246 |
313 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
42 |
3476 |
7619 |
24 |
|
Date: 2023-10-02:
| 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 |
21296 |
6553 |
132 |
169 |
2 |
0 |
0 |
0 |
| OW |
0 |
779 |
213 |
329 |
27 |
0 |
0 |
0 |
| VODI |
0 |
90 |
178 |
809 |
133 |
4 |
0 |
0 |
| ODI |
0 |
1 |
1 |
566 |
755 |
51 |
0 |
0 |
| CDI |
0 |
0 |
1 |
35 |
689 |
1017 |
25 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
47 |
4553 |
7411 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21282 |
5926 |
140 |
183 |
4 |
0 |
0 |
0 |
| OW |
14 |
1252 |
205 |
427 |
75 |
13 |
0 |
0 |
| VODI |
0 |
231 |
166 |
744 |
335 |
30 |
0 |
0 |
| ODI |
0 |
14 |
10 |
472 |
745 |
127 |
3 |
0 |
| CDI |
0 |
0 |
4 |
82 |
454 |
1302 |
417 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
40 |
4153 |
7016 |
0 |
|
Date: 2023-10-04:
| 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 |
20436 |
6607 |
197 |
234 |
23 |
0 |
0 |
0 |
| OW |
0 |
723 |
229 |
426 |
134 |
0 |
0 |
0 |
| VODI |
0 |
93 |
84 |
492 |
442 |
31 |
0 |
0 |
| ODI |
0 |
35 |
20 |
148 |
476 |
408 |
8 |
0 |
| CDI |
0 |
0 |
3 |
98 |
480 |
1345 |
254 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
62 |
2402 |
9961 |
15 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20412 |
5893 |
149 |
166 |
21 |
0 |
0 |
0 |
| OW |
24 |
1246 |
208 |
452 |
245 |
11 |
1 |
0 |
| VODI |
0 |
291 |
144 |
467 |
509 |
225 |
0 |
0 |
| ODI |
0 |
27 |
31 |
239 |
440 |
672 |
32 |
0 |
| CDI |
0 |
1 |
1 |
74 |
350 |
1188 |
391 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
52 |
2090 |
9799 |
15 |
|
Date: 2023-10-06:
| 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 |
19942 |
5969 |
261 |
350 |
75 |
0 |
0 |
0 |
| OW |
0 |
340 |
210 |
633 |
333 |
32 |
0 |
0 |
| VODI |
0 |
50 |
44 |
351 |
620 |
199 |
3 |
0 |
| ODI |
0 |
16 |
9 |
107 |
438 |
416 |
32 |
0 |
| CDI |
0 |
0 |
3 |
51 |
338 |
1113 |
421 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
124 |
1618 |
10829 |
937 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19938 |
5419 |
215 |
308 |
37 |
0 |
0 |
0 |
| OW |
4 |
763 |
208 |
515 |
259 |
43 |
0 |
0 |
| VODI |
0 |
178 |
91 |
544 |
811 |
372 |
22 |
0 |
| ODI |
0 |
14 |
12 |
104 |
485 |
613 |
95 |
0 |
| CDI |
0 |
1 |
1 |
23 |
331 |
1114 |
408 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
1236 |
10760 |
937 |
|
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