Validation of sea ice concentration - American sector
Bulletin date: 2023-08-31
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-08-25:
| 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 |
15663 |
10445 |
581 |
451 |
0 |
0 |
0 |
0 |
| OW |
3 |
407 |
483 |
842 |
4 |
1 |
0 |
0 |
| VODI |
0 |
8 |
65 |
1979 |
190 |
26 |
0 |
0 |
| ODI |
0 |
0 |
1 |
490 |
2788 |
403 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
1317 |
4351 |
770 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
1 |
1953 |
2598 |
39 |
|
...date precedes bulletin
|
Date: 2023-08-27:
| 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 |
16995 |
9341 |
494 |
436 |
4 |
0 |
0 |
0 |
| OW |
0 |
561 |
571 |
677 |
4 |
0 |
0 |
0 |
| VODI |
0 |
15 |
71 |
1809 |
221 |
23 |
0 |
0 |
| ODI |
0 |
0 |
1 |
547 |
2575 |
350 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
1780 |
3589 |
1044 |
32 |
| VCDI |
0 |
4 |
0 |
0 |
62 |
3004 |
1617 |
35 |
|
...date precedes bulletin
|
Date: 2023-08-29:
| 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 |
18209 |
9415 |
426 |
212 |
4 |
0 |
0 |
0 |
| OW |
0 |
202 |
469 |
672 |
3 |
0 |
0 |
0 |
| VODI |
0 |
1 |
11 |
1963 |
176 |
4 |
0 |
0 |
| ODI |
0 |
0 |
1 |
219 |
3243 |
303 |
0 |
0 |
| CDI |
0 |
5 |
1 |
1 |
986 |
4365 |
408 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
30 |
1250 |
3280 |
6 |
|
...date precedes bulletin
|
Date: 2023-08-31:
| 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 |
19701 |
8444 |
222 |
157 |
2 |
0 |
0 |
0 |
| OW |
0 |
590 |
430 |
436 |
4 |
0 |
0 |
0 |
| VODI |
0 |
1 |
36 |
1796 |
154 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
549 |
2720 |
169 |
0 |
0 |
| CDI |
0 |
6 |
1 |
8 |
1139 |
4055 |
327 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
40 |
1637 |
3241 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19701 |
8673 |
310 |
222 |
2 |
0 |
0 |
0 |
| OW |
0 |
349 |
309 |
429 |
8 |
0 |
0 |
0 |
| VODI |
0 |
13 |
69 |
1701 |
202 |
1 |
0 |
0 |
| ODI |
0 |
0 |
0 |
585 |
2960 |
212 |
0 |
0 |
| CDI |
0 |
5 |
1 |
9 |
847 |
4135 |
378 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
40 |
1514 |
3190 |
0 |
|
Date: 2023-09-02:
| 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 |
19321 |
8790 |
149 |
140 |
1 |
0 |
0 |
0 |
| OW |
0 |
790 |
471 |
431 |
1 |
0 |
0 |
0 |
| VODI |
0 |
9 |
70 |
1773 |
136 |
1 |
0 |
0 |
| ODI |
0 |
2 |
1 |
444 |
2647 |
241 |
0 |
0 |
| CDI |
0 |
5 |
0 |
7 |
1113 |
3878 |
405 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
64 |
1563 |
3413 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19321 |
9269 |
345 |
251 |
1 |
0 |
0 |
0 |
| OW |
0 |
299 |
273 |
546 |
2 |
0 |
0 |
0 |
| VODI |
0 |
21 |
72 |
1550 |
202 |
2 |
0 |
0 |
| ODI |
0 |
2 |
0 |
441 |
2776 |
349 |
0 |
0 |
| CDI |
0 |
5 |
1 |
7 |
919 |
3926 |
492 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
62 |
1406 |
3326 |
0 |
|
Date: 2023-09-04:
| 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 |
20338 |
8764 |
410 |
169 |
0 |
0 |
0 |
0 |
| OW |
0 |
72 |
257 |
604 |
1 |
0 |
0 |
0 |
| VODI |
0 |
1 |
1 |
1049 |
212 |
2 |
0 |
0 |
| ODI |
0 |
2 |
1 |
83 |
2796 |
121 |
1 |
0 |
| CDI |
0 |
4 |
0 |
8 |
555 |
5421 |
257 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
25 |
2012 |
2700 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20338 |
8171 |
287 |
325 |
10 |
0 |
0 |
0 |
| OW |
0 |
564 |
188 |
378 |
105 |
0 |
0 |
0 |
| VODI |
0 |
101 |
193 |
856 |
572 |
20 |
0 |
0 |
| ODI |
0 |
2 |
1 |
346 |
2084 |
814 |
0 |
0 |
| CDI |
0 |
5 |
0 |
8 |
726 |
4073 |
629 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
92 |
2649 |
2329 |
0 |
|
Date: 2023-09-06:
| 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 |
21039 |
8413 |
282 |
124 |
0 |
0 |
0 |
0 |
| OW |
0 |
156 |
273 |
442 |
16 |
0 |
0 |
0 |
| VODI |
0 |
13 |
22 |
926 |
197 |
0 |
0 |
0 |
| ODI |
0 |
3 |
1 |
395 |
2232 |
26 |
0 |
0 |
| CDI |
0 |
2 |
1 |
9 |
1292 |
3896 |
1208 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
25 |
2027 |
2846 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21039 |
7657 |
176 |
182 |
2 |
0 |
0 |
0 |
| OW |
0 |
688 |
177 |
289 |
37 |
0 |
0 |
0 |
| VODI |
0 |
233 |
220 |
959 |
278 |
0 |
0 |
0 |
| ODI |
0 |
6 |
5 |
454 |
2085 |
316 |
0 |
0 |
| CDI |
0 |
3 |
1 |
12 |
1336 |
3043 |
1074 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
24 |
2590 |
2980 |
0 |
|
Date: 2023-09-08:
| 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 |
21417 |
8036 |
176 |
85 |
1 |
0 |
0 |
0 |
| OW |
0 |
399 |
273 |
374 |
3 |
0 |
0 |
0 |
| VODI |
0 |
19 |
36 |
1016 |
108 |
0 |
0 |
0 |
| ODI |
0 |
4 |
1 |
792 |
1465 |
140 |
0 |
0 |
| CDI |
0 |
0 |
0 |
102 |
1572 |
4101 |
496 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
31 |
3930 |
1285 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21410 |
7209 |
169 |
176 |
5 |
0 |
0 |
0 |
| OW |
7 |
855 |
105 |
202 |
3 |
0 |
0 |
0 |
| VODI |
0 |
388 |
209 |
1122 |
103 |
0 |
0 |
0 |
| ODI |
0 |
6 |
3 |
790 |
1530 |
212 |
0 |
0 |
| CDI |
0 |
0 |
0 |
83 |
1508 |
3137 |
439 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
31 |
4822 |
1342 |
0 |
|
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