Validation of sea ice concentration - American sector
Bulletin date: 2023-09-07
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-09-01:
| 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 |
10344 |
0 |
15349 |
44 |
0 |
0 |
0 |
0 |
| OW |
1 |
0 |
3297 |
113 |
0 |
0 |
0 |
0 |
| VODI |
0 |
0 |
2879 |
156 |
59 |
0 |
0 |
0 |
| ODI |
0 |
0 |
1943 |
1032 |
1075 |
51 |
0 |
0 |
| CDI |
0 |
0 |
2878 |
1607 |
1023 |
54 |
0 |
0 |
| VCDI |
0 |
0 |
3528 |
433 |
0 |
0 |
0 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-03:
| 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 |
18049 |
7739 |
151 |
83 |
6 |
0 |
0 |
0 |
| OW |
8 |
2544 |
376 |
300 |
3 |
0 |
0 |
0 |
| VODI |
0 |
606 |
540 |
1629 |
282 |
14 |
0 |
0 |
| ODI |
0 |
16 |
16 |
613 |
2522 |
771 |
14 |
0 |
| CDI |
0 |
3 |
0 |
21 |
807 |
4266 |
637 |
0 |
| VCDI |
0 |
3 |
0 |
0 |
4 |
2660 |
1183 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-05:
| 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 |
19983 |
7478 |
95 |
45 |
0 |
0 |
0 |
0 |
| OW |
8 |
1910 |
444 |
211 |
3 |
0 |
0 |
0 |
| VODI |
0 |
213 |
279 |
884 |
272 |
14 |
0 |
0 |
| ODI |
0 |
17 |
22 |
516 |
1961 |
399 |
0 |
0 |
| CDI |
0 |
4 |
1 |
74 |
1293 |
6738 |
369 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
0 |
1756 |
877 |
0 |
|
...date precedes bulletin
|
Date: 2023-09-07:
| 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 |
20434 |
6985 |
79 |
44 |
3 |
0 |
0 |
0 |
| OW |
9 |
1985 |
326 |
199 |
18 |
0 |
0 |
0 |
| VODI |
0 |
412 |
273 |
786 |
214 |
16 |
0 |
0 |
| ODI |
0 |
41 |
80 |
872 |
1723 |
337 |
0 |
0 |
| CDI |
0 |
1 |
1 |
145 |
1608 |
6797 |
220 |
0 |
| VCDI |
0 |
2 |
0 |
0 |
5 |
1911 |
340 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20325 |
6268 |
79 |
46 |
5 |
0 |
0 |
0 |
| OW |
118 |
2223 |
229 |
178 |
30 |
3 |
0 |
0 |
| VODI |
0 |
897 |
427 |
1114 |
376 |
10 |
0 |
0 |
| ODI |
0 |
35 |
20 |
616 |
2137 |
807 |
18 |
0 |
| CDI |
0 |
0 |
4 |
89 |
1013 |
6624 |
251 |
0 |
| VCDI |
0 |
3 |
0 |
3 |
10 |
1617 |
291 |
0 |
|
Date: 2023-09-09:
| 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 |
20934 |
6298 |
65 |
26 |
0 |
0 |
0 |
0 |
| OW |
3 |
2212 |
253 |
138 |
3 |
0 |
0 |
0 |
| VODI |
0 |
550 |
297 |
844 |
154 |
0 |
0 |
0 |
| ODI |
0 |
47 |
96 |
1274 |
1464 |
193 |
0 |
0 |
| CDI |
0 |
0 |
3 |
238 |
1372 |
5924 |
488 |
0 |
| VCDI |
0 |
0 |
1 |
1 |
31 |
2399 |
558 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20873 |
5656 |
60 |
29 |
3 |
0 |
0 |
0 |
| OW |
64 |
2424 |
216 |
172 |
1 |
0 |
0 |
0 |
| VODI |
0 |
1006 |
402 |
1287 |
215 |
6 |
0 |
0 |
| ODI |
0 |
21 |
29 |
930 |
1848 |
653 |
11 |
0 |
| CDI |
0 |
0 |
7 |
102 |
923 |
5837 |
512 |
0 |
| VCDI |
0 |
0 |
1 |
1 |
34 |
2020 |
523 |
0 |
|
Date: 2023-09-11:
| 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 |
20796 |
7535 |
142 |
53 |
0 |
0 |
0 |
0 |
| OW |
1 |
1545 |
307 |
221 |
4 |
0 |
0 |
0 |
| VODI |
0 |
113 |
192 |
1283 |
185 |
13 |
0 |
0 |
| ODI |
0 |
3 |
3 |
354 |
2502 |
297 |
0 |
0 |
| CDI |
0 |
0 |
1 |
8 |
557 |
6176 |
101 |
0 |
| VCDI |
0 |
0 |
1 |
4 |
1 |
2604 |
864 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
20674 |
6018 |
87 |
32 |
0 |
0 |
0 |
0 |
| OW |
123 |
2224 |
239 |
283 |
26 |
0 |
0 |
0 |
| VODI |
0 |
906 |
272 |
984 |
508 |
161 |
4 |
0 |
| ODI |
0 |
48 |
43 |
544 |
1732 |
858 |
79 |
0 |
| CDI |
0 |
0 |
4 |
76 |
947 |
4891 |
343 |
0 |
| VCDI |
0 |
0 |
1 |
4 |
36 |
3180 |
539 |
0 |
|
Date: 2023-09-13:
| 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 |
21292 |
7378 |
103 |
80 |
19 |
0 |
0 |
0 |
| OW |
24 |
1358 |
281 |
261 |
28 |
0 |
0 |
0 |
| VODI |
0 |
179 |
170 |
849 |
460 |
63 |
0 |
0 |
| ODI |
0 |
6 |
9 |
340 |
1845 |
980 |
22 |
0 |
| CDI |
0 |
0 |
0 |
38 |
635 |
4010 |
1457 |
0 |
| VCDI |
0 |
0 |
0 |
4 |
4 |
2832 |
1139 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21223 |
5514 |
79 |
80 |
12 |
0 |
0 |
0 |
| OW |
93 |
2364 |
187 |
159 |
57 |
33 |
0 |
0 |
| VODI |
0 |
990 |
247 |
978 |
451 |
111 |
3 |
0 |
| ODI |
0 |
50 |
42 |
305 |
1605 |
1113 |
207 |
0 |
| CDI |
0 |
3 |
8 |
45 |
854 |
3891 |
1959 |
0 |
| VCDI |
0 |
0 |
0 |
5 |
12 |
2737 |
449 |
0 |
|
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 |
21979 |
6978 |
75 |
45 |
5 |
0 |
0 |
0 |
| OW |
31 |
1376 |
255 |
146 |
52 |
10 |
0 |
0 |
| VODI |
0 |
263 |
223 |
774 |
325 |
77 |
3 |
0 |
| ODI |
0 |
12 |
39 |
412 |
1638 |
1139 |
12 |
0 |
| CDI |
0 |
0 |
0 |
152 |
582 |
3509 |
1207 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
6 |
2643 |
1898 |
0 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
21864 |
5108 |
56 |
23 |
1 |
0 |
0 |
0 |
| OW |
146 |
2259 |
173 |
123 |
63 |
52 |
3 |
0 |
| VODI |
0 |
1190 |
273 |
757 |
403 |
97 |
2 |
0 |
| ODI |
0 |
56 |
74 |
498 |
1149 |
1246 |
134 |
0 |
| CDI |
0 |
16 |
16 |
128 |
985 |
3599 |
2194 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
7 |
2384 |
787 |
0 |
|
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