Validation of sea ice concentration - American sector
Bulletin date: 2023-09-21
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-09-15:
| 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 |
39798 |
4374 |
5 |
9 |
8 |
0 |
0 |
0 |
| OW |
42 |
1313 |
269 |
220 |
69 |
5 |
0 |
0 |
| VODI |
1 |
130 |
108 |
1017 |
340 |
113 |
1 |
0 |
| ODI |
0 |
0 |
6 |
324 |
1719 |
1210 |
17 |
0 |
| CDI |
0 |
0 |
0 |
83 |
632 |
2827 |
1972 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
10 |
1376 |
3219 |
14 |
|
...date precedes bulletin
|
Date: 2023-09-17:
| 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 |
39879 |
4319 |
16 |
4 |
1 |
0 |
0 |
0 |
| OW |
35 |
1294 |
254 |
287 |
7 |
1 |
0 |
0 |
| VODI |
1 |
141 |
118 |
1172 |
253 |
89 |
0 |
0 |
| ODI |
0 |
0 |
11 |
436 |
1432 |
1385 |
14 |
0 |
| CDI |
0 |
0 |
0 |
186 |
520 |
2456 |
1437 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
22 |
744 |
4516 |
201 |
|
...date precedes bulletin
|
Date: 2023-09-19:
| 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 |
40060 |
4801 |
2 |
13 |
0 |
0 |
0 |
0 |
| OW |
29 |
928 |
279 |
192 |
0 |
1 |
0 |
0 |
| VODI |
3 |
33 |
123 |
1316 |
119 |
6 |
0 |
0 |
| ODI |
0 |
0 |
0 |
311 |
1907 |
216 |
2 |
0 |
| CDI |
0 |
0 |
0 |
10 |
494 |
3463 |
344 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
6 |
1244 |
5326 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-21:
| 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 |
39357 |
5243 |
58 |
30 |
1 |
0 |
0 |
0 |
| OW |
45 |
836 |
272 |
360 |
21 |
0 |
0 |
0 |
| VODI |
0 |
64 |
127 |
1006 |
441 |
24 |
1 |
0 |
| ODI |
0 |
0 |
0 |
242 |
1707 |
527 |
14 |
0 |
| CDI |
0 |
0 |
0 |
23 |
361 |
3152 |
1205 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
4 |
689 |
5421 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
39355 |
5376 |
67 |
30 |
1 |
0 |
0 |
0 |
| OW |
47 |
718 |
264 |
363 |
23 |
0 |
0 |
0 |
| VODI |
0 |
49 |
126 |
1022 |
537 |
30 |
4 |
0 |
| ODI |
0 |
0 |
0 |
220 |
1587 |
576 |
22 |
0 |
| CDI |
0 |
0 |
0 |
25 |
386 |
3118 |
1452 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
1 |
668 |
5163 |
0 |
|
Date: 2023-09-23:
| 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 |
39478 |
4832 |
72 |
15 |
0 |
0 |
0 |
0 |
| OW |
43 |
854 |
275 |
408 |
18 |
0 |
0 |
0 |
| VODI |
0 |
68 |
106 |
940 |
562 |
10 |
9 |
0 |
| ODI |
0 |
0 |
1 |
324 |
1256 |
533 |
29 |
0 |
| CDI |
0 |
0 |
0 |
38 |
355 |
3223 |
1315 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
0 |
1110 |
5348 |
7 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
39483 |
4914 |
83 |
35 |
0 |
0 |
0 |
0 |
| OW |
38 |
774 |
266 |
373 |
19 |
0 |
0 |
0 |
| VODI |
0 |
66 |
104 |
967 |
630 |
12 |
11 |
0 |
| ODI |
0 |
0 |
1 |
304 |
1133 |
581 |
35 |
0 |
| CDI |
0 |
0 |
0 |
48 |
409 |
3323 |
1410 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
960 |
5245 |
7 |
|
Date: 2023-09-25:
| 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 |
37234 |
6476 |
165 |
173 |
1 |
0 |
0 |
0 |
| OW |
7 |
354 |
262 |
455 |
22 |
0 |
0 |
0 |
| VODI |
0 |
17 |
14 |
892 |
313 |
2 |
0 |
0 |
| ODI |
0 |
0 |
0 |
77 |
1154 |
66 |
2 |
0 |
| CDI |
0 |
0 |
0 |
35 |
404 |
1894 |
283 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
2368 |
8338 |
223 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
37220 |
6248 |
181 |
275 |
36 |
0 |
0 |
0 |
| OW |
21 |
519 |
159 |
622 |
336 |
6 |
0 |
0 |
| VODI |
0 |
75 |
98 |
528 |
692 |
144 |
0 |
0 |
| ODI |
0 |
5 |
3 |
167 |
705 |
807 |
38 |
0 |
| CDI |
0 |
0 |
0 |
40 |
125 |
1781 |
2174 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1592 |
6411 |
223 |
|
Date: 2023-09-27:
| 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 |
38430 |
5207 |
156 |
121 |
4 |
0 |
0 |
0 |
| OW |
9 |
406 |
281 |
482 |
24 |
0 |
0 |
0 |
| VODI |
0 |
11 |
13 |
797 |
285 |
1 |
0 |
0 |
| ODI |
0 |
0 |
2 |
138 |
756 |
323 |
11 |
0 |
| CDI |
0 |
0 |
0 |
4 |
458 |
639 |
1242 |
136 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
859 |
7712 |
2700 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
38427 |
4895 |
164 |
177 |
17 |
0 |
0 |
0 |
| OW |
12 |
664 |
211 |
591 |
169 |
5 |
0 |
0 |
| VODI |
0 |
65 |
77 |
634 |
562 |
84 |
5 |
0 |
| ODI |
0 |
0 |
0 |
139 |
589 |
485 |
78 |
0 |
| CDI |
0 |
0 |
0 |
1 |
205 |
942 |
1294 |
29 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
306 |
7588 |
2807 |
|
Date: 2023-09-29:
| 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 |
38450 |
5309 |
113 |
66 |
7 |
0 |
0 |
0 |
| OW |
18 |
500 |
239 |
408 |
71 |
18 |
0 |
0 |
| VODI |
0 |
16 |
56 |
814 |
246 |
20 |
0 |
0 |
| ODI |
0 |
0 |
2 |
166 |
965 |
92 |
5 |
0 |
| CDI |
0 |
0 |
0 |
8 |
335 |
1111 |
597 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
13 |
323 |
4608 |
6655 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
38443 |
4972 |
121 |
246 |
34 |
0 |
0 |
0 |
| OW |
25 |
714 |
152 |
409 |
203 |
9 |
0 |
0 |
| VODI |
0 |
137 |
119 |
482 |
386 |
203 |
4 |
0 |
| ODI |
0 |
2 |
18 |
276 |
383 |
313 |
44 |
8 |
| CDI |
0 |
0 |
0 |
49 |
429 |
442 |
670 |
32 |
| VCDI |
0 |
0 |
0 |
0 |
202 |
597 |
4492 |
6615 |
|
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