Validation of sea ice concentration - American sector
Bulletin date: 2023-08-31
Data source: OSI SAF N.H. AMSR 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 |
13873 |
11806 |
723 |
696 |
42 |
0 |
0 |
0 |
| OW |
3 |
579 |
484 |
665 |
8 |
1 |
0 |
0 |
| VODI |
0 |
118 |
238 |
1686 |
203 |
22 |
1 |
0 |
| ODI |
0 |
4 |
4 |
751 |
2376 |
544 |
3 |
0 |
| CDI |
0 |
0 |
0 |
21 |
1498 |
4405 |
517 |
0 |
| VCDI |
0 |
4 |
0 |
0 |
2 |
2433 |
2156 |
0 |
|
...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 |
15014 |
11034 |
633 |
549 |
40 |
0 |
0 |
0 |
| OW |
0 |
759 |
493 |
556 |
5 |
0 |
0 |
0 |
| VODI |
0 |
131 |
206 |
1548 |
233 |
19 |
2 |
0 |
| ODI |
0 |
1 |
23 |
817 |
2191 |
437 |
4 |
0 |
| CDI |
0 |
1 |
1 |
16 |
2077 |
3837 |
517 |
0 |
| VCDI |
0 |
4 |
0 |
1 |
93 |
3383 |
1241 |
0 |
|
...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 |
15298 |
11885 |
667 |
388 |
28 |
0 |
0 |
0 |
| OW |
0 |
428 |
481 |
433 |
3 |
1 |
0 |
0 |
| VODI |
0 |
64 |
226 |
1684 |
179 |
2 |
0 |
0 |
| ODI |
0 |
1 |
4 |
541 |
2913 |
295 |
12 |
0 |
| CDI |
0 |
6 |
1 |
9 |
1224 |
4279 |
247 |
0 |
| VCDI |
0 |
1 |
0 |
0 |
14 |
2202 |
2350 |
0 |
|
...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 |
1215 |
7598 |
19659 |
53 |
1 |
0 |
0 |
0 |
| OW |
0 |
181 |
1245 |
29 |
5 |
0 |
0 |
0 |
| VODI |
0 |
66 |
1855 |
48 |
19 |
0 |
0 |
0 |
| ODI |
0 |
0 |
2666 |
583 |
189 |
0 |
0 |
0 |
| CDI |
0 |
0 |
3964 |
1095 |
477 |
0 |
0 |
0 |
| VCDI |
0 |
0 |
3608 |
1213 |
97 |
0 |
0 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
1215 |
7699 |
19925 |
67 |
2 |
0 |
0 |
0 |
| OW |
0 |
111 |
959 |
20 |
5 |
0 |
0 |
0 |
| VODI |
0 |
35 |
1854 |
76 |
21 |
0 |
0 |
0 |
| ODI |
0 |
0 |
2777 |
774 |
206 |
0 |
0 |
0 |
| CDI |
0 |
0 |
3994 |
913 |
468 |
0 |
0 |
0 |
| VCDI |
0 |
0 |
3488 |
1171 |
86 |
0 |
0 |
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 |
15770 |
12037 |
355 |
227 |
12 |
0 |
0 |
0 |
| OW |
0 |
915 |
371 |
378 |
29 |
0 |
0 |
0 |
| VODI |
0 |
141 |
275 |
1367 |
199 |
7 |
0 |
0 |
| ODI |
0 |
7 |
11 |
806 |
2235 |
276 |
0 |
0 |
| CDI |
0 |
6 |
1 |
17 |
1300 |
3883 |
201 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
102 |
2893 |
2045 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15770 |
12507 |
503 |
384 |
23 |
0 |
0 |
0 |
| OW |
0 |
441 |
269 |
383 |
27 |
0 |
0 |
0 |
| VODI |
0 |
145 |
225 |
1246 |
227 |
4 |
0 |
0 |
| ODI |
0 |
6 |
15 |
764 |
2403 |
377 |
3 |
0 |
| CDI |
0 |
7 |
1 |
18 |
1098 |
4002 |
224 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
99 |
2676 |
2019 |
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 |
18254 |
10680 |
489 |
248 |
10 |
0 |
0 |
0 |
| OW |
0 |
272 |
314 |
334 |
14 |
0 |
0 |
0 |
| VODI |
0 |
45 |
113 |
822 |
280 |
5 |
0 |
0 |
| ODI |
0 |
5 |
6 |
390 |
2303 |
298 |
2 |
0 |
| CDI |
0 |
5 |
2 |
25 |
795 |
5191 |
227 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
3691 |
1037 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
18254 |
10122 |
436 |
290 |
29 |
0 |
0 |
0 |
| OW |
0 |
645 |
192 |
258 |
140 |
0 |
0 |
0 |
| VODI |
0 |
226 |
276 |
687 |
506 |
47 |
0 |
0 |
| ODI |
0 |
8 |
18 |
533 |
1780 |
891 |
17 |
0 |
| CDI |
0 |
6 |
2 |
51 |
850 |
4249 |
283 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
106 |
3998 |
966 |
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 |
17924 |
11297 |
444 |
186 |
7 |
0 |
0 |
0 |
| OW |
0 |
301 |
294 |
270 |
22 |
0 |
0 |
0 |
| VODI |
0 |
53 |
124 |
784 |
195 |
2 |
0 |
0 |
| ODI |
0 |
5 |
8 |
658 |
1887 |
99 |
0 |
0 |
| CDI |
0 |
4 |
1 |
59 |
1556 |
3970 |
818 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
12 |
3546 |
1339 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17924 |
10583 |
345 |
193 |
11 |
0 |
0 |
0 |
| OW |
0 |
721 |
196 |
242 |
32 |
0 |
0 |
0 |
| VODI |
0 |
330 |
300 |
831 |
220 |
9 |
0 |
0 |
| ODI |
0 |
21 |
29 |
605 |
1861 |
350 |
0 |
0 |
| CDI |
0 |
5 |
1 |
86 |
1513 |
3287 |
577 |
0 |
| VCDI |
0 |
0 |
0 |
1 |
42 |
3971 |
1580 |
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 |
19353 |
9838 |
299 |
213 |
12 |
0 |
0 |
0 |
| OW |
0 |
592 |
211 |
233 |
13 |
0 |
0 |
0 |
| VODI |
0 |
103 |
186 |
768 |
120 |
2 |
0 |
0 |
| ODI |
0 |
13 |
35 |
1127 |
1115 |
112 |
0 |
0 |
| CDI |
0 |
0 |
1 |
281 |
1513 |
4080 |
396 |
0 |
| VCDI |
0 |
2 |
1 |
4 |
13 |
4881 |
349 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
19353 |
9062 |
267 |
267 |
20 |
0 |
0 |
0 |
| OW |
0 |
890 |
122 |
151 |
9 |
0 |
0 |
0 |
| VODI |
0 |
565 |
283 |
858 |
116 |
0 |
0 |
0 |
| ODI |
0 |
29 |
59 |
1041 |
1237 |
175 |
0 |
0 |
| CDI |
0 |
2 |
1 |
305 |
1379 |
3140 |
340 |
0 |
| VCDI |
0 |
0 |
1 |
4 |
25 |
5760 |
405 |
0 |
|
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