Validation of sea ice concentration - American sector
Bulletin date: 2023-09-28
Data source: OSI SAF N.H. multi-product 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 |
39531 |
4949 |
46 |
10 |
2 |
0 |
0 |
0 |
| OW |
46 |
911 |
263 |
349 |
11 |
3 |
0 |
0 |
| VODI |
0 |
62 |
119 |
1047 |
425 |
21 |
6 |
0 |
| ODI |
0 |
0 |
1 |
350 |
1419 |
527 |
18 |
0 |
| CDI |
0 |
0 |
1 |
22 |
423 |
3160 |
1180 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
5 |
578 |
5545 |
201 |
|
...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 |
37726 |
6244 |
148 |
93 |
0 |
0 |
0 |
0 |
| OW |
31 |
606 |
238 |
672 |
65 |
0 |
0 |
0 |
| VODI |
0 |
72 |
88 |
749 |
651 |
36 |
4 |
0 |
| ODI |
0 |
2 |
1 |
257 |
933 |
823 |
35 |
0 |
| CDI |
0 |
0 |
0 |
35 |
211 |
3391 |
1500 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1582 |
5014 |
24 |
|
...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 |
36931 |
6631 |
144 |
181 |
0 |
0 |
0 |
0 |
| OW |
3 |
363 |
164 |
646 |
10 |
0 |
0 |
0 |
| VODI |
0 |
20 |
12 |
791 |
329 |
1 |
0 |
0 |
| ODI |
0 |
0 |
1 |
135 |
1031 |
144 |
7 |
0 |
| CDI |
0 |
0 |
0 |
29 |
342 |
1007 |
1114 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
14 |
1498 |
8287 |
1396 |
|
...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 |
38550 |
5272 |
103 |
73 |
11 |
0 |
0 |
0 |
| OW |
12 |
473 |
263 |
383 |
57 |
9 |
0 |
0 |
| VODI |
0 |
9 |
48 |
789 |
232 |
13 |
1 |
0 |
| ODI |
0 |
0 |
2 |
184 |
916 |
83 |
6 |
1 |
| CDI |
0 |
0 |
0 |
6 |
452 |
769 |
955 |
90 |
| VCDI |
0 |
0 |
0 |
0 |
40 |
491 |
5072 |
5866 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
38545 |
5344 |
123 |
96 |
15 |
0 |
0 |
0 |
| OW |
17 |
403 |
256 |
405 |
60 |
12 |
0 |
0 |
| VODI |
0 |
7 |
35 |
770 |
270 |
10 |
0 |
0 |
| ODI |
0 |
0 |
2 |
155 |
913 |
115 |
6 |
2 |
| CDI |
0 |
0 |
0 |
9 |
395 |
854 |
999 |
130 |
| VCDI |
0 |
0 |
0 |
0 |
55 |
374 |
5029 |
5825 |
|
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 |
38318 |
5266 |
98 |
115 |
4 |
0 |
1 |
0 |
| OW |
21 |
551 |
254 |
410 |
52 |
34 |
0 |
0 |
| VODI |
0 |
25 |
65 |
903 |
216 |
23 |
0 |
0 |
| ODI |
0 |
3 |
3 |
197 |
977 |
64 |
8 |
0 |
| CDI |
0 |
0 |
0 |
11 |
358 |
1151 |
621 |
9 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
316 |
3681 |
7476 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
38310 |
5293 |
122 |
153 |
7 |
5 |
1 |
0 |
| OW |
29 |
523 |
252 |
416 |
57 |
33 |
0 |
0 |
| VODI |
0 |
26 |
43 |
876 |
282 |
16 |
0 |
0 |
| ODI |
0 |
3 |
3 |
182 |
954 |
106 |
7 |
0 |
| CDI |
0 |
0 |
0 |
9 |
301 |
1140 |
810 |
12 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
288 |
3493 |
7473 |
|
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 |
37528 |
5485 |
126 |
133 |
6 |
0 |
0 |
0 |
| OW |
3 |
640 |
275 |
427 |
22 |
0 |
0 |
0 |
| VODI |
0 |
12 |
22 |
955 |
225 |
16 |
0 |
0 |
| ODI |
0 |
0 |
0 |
94 |
1164 |
124 |
6 |
0 |
| CDI |
0 |
0 |
0 |
1 |
253 |
1369 |
189 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
454 |
6482 |
5220 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
37503 |
4853 |
124 |
168 |
5 |
0 |
0 |
0 |
| OW |
28 |
1156 |
202 |
508 |
100 |
23 |
5 |
0 |
| VODI |
0 |
122 |
94 |
773 |
447 |
76 |
6 |
0 |
| ODI |
0 |
6 |
3 |
140 |
918 |
317 |
0 |
0 |
| CDI |
0 |
0 |
0 |
21 |
200 |
1174 |
908 |
17 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
373 |
5758 |
5203 |
|
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 |
36521 |
5621 |
208 |
254 |
12 |
0 |
0 |
0 |
| OW |
2 |
572 |
199 |
673 |
87 |
0 |
0 |
0 |
| VODI |
0 |
59 |
32 |
543 |
514 |
7 |
0 |
0 |
| ODI |
0 |
13 |
11 |
146 |
544 |
384 |
20 |
0 |
| CDI |
0 |
0 |
0 |
49 |
430 |
1208 |
535 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
51 |
946 |
7889 |
3701 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
36420 |
4997 |
149 |
194 |
6 |
0 |
0 |
0 |
| OW |
103 |
1062 |
196 |
635 |
209 |
5 |
0 |
0 |
| VODI |
0 |
197 |
95 |
565 |
599 |
198 |
0 |
0 |
| ODI |
0 |
9 |
9 |
249 |
475 |
603 |
110 |
0 |
| CDI |
0 |
0 |
1 |
22 |
323 |
1069 |
642 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
26 |
670 |
7692 |
3701 |
|
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 |
35040 |
5884 |
311 |
435 |
42 |
0 |
0 |
0 |
| OW |
0 |
275 |
193 |
773 |
321 |
12 |
0 |
0 |
| VODI |
0 |
21 |
23 |
375 |
616 |
241 |
0 |
0 |
| ODI |
0 |
7 |
5 |
90 |
459 |
452 |
21 |
0 |
| CDI |
0 |
0 |
0 |
32 |
268 |
1084 |
580 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
59 |
630 |
5674 |
7308 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
35029 |
5355 |
274 |
359 |
13 |
0 |
0 |
0 |
| OW |
11 |
689 |
198 |
682 |
228 |
17 |
0 |
0 |
| VODI |
0 |
135 |
57 |
581 |
864 |
375 |
20 |
0 |
| ODI |
0 |
8 |
2 |
69 |
447 |
684 |
129 |
0 |
| CDI |
0 |
0 |
1 |
14 |
210 |
1055 |
653 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
3 |
288 |
5473 |
7307 |
|
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