Validation of sea ice concentration - American sector
Bulletin date: 2021-09-23
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2021-09-17:
| 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 |
13671 |
8008 |
104 |
478 |
49 |
0 |
0 |
0 |
| OW |
0 |
1028 |
111 |
1115 |
113 |
0 |
0 |
0 |
| VODI |
0 |
156 |
37 |
1548 |
873 |
23 |
0 |
0 |
| ODI |
0 |
72 |
6 |
189 |
1237 |
321 |
7 |
2 |
| CDI |
0 |
29 |
0 |
20 |
259 |
2306 |
749 |
97 |
| VCDI |
0 |
0 |
0 |
0 |
9 |
1303 |
6975 |
4971 |
|
...date precedes bulletin
|
Date: 2021-09-19:
| 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 |
14033 |
7195 |
92 |
543 |
29 |
0 |
0 |
0 |
| OW |
0 |
1013 |
101 |
1340 |
102 |
0 |
0 |
0 |
| VODI |
0 |
179 |
48 |
1344 |
1025 |
10 |
2 |
0 |
| ODI |
0 |
110 |
4 |
187 |
1275 |
298 |
21 |
0 |
| CDI |
0 |
28 |
1 |
28 |
351 |
1940 |
697 |
7 |
| VCDI |
0 |
0 |
0 |
4 |
24 |
2004 |
7399 |
4432 |
|
...date precedes bulletin
|
Date: 2021-09-21:
| 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 |
12847 |
8304 |
130 |
545 |
8 |
0 |
0 |
0 |
| OW |
0 |
590 |
93 |
1162 |
83 |
0 |
0 |
0 |
| VODI |
0 |
201 |
36 |
1702 |
754 |
1 |
0 |
0 |
| ODI |
0 |
124 |
4 |
155 |
1636 |
73 |
13 |
0 |
| CDI |
0 |
0 |
0 |
26 |
674 |
2377 |
123 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
26 |
2772 |
8591 |
2816 |
|
...date precedes bulletin
|
Date: 2021-09-23:
| 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 |
13172 |
7456 |
120 |
423 |
0 |
0 |
0 |
0 |
| OW |
0 |
476 |
75 |
1494 |
79 |
0 |
0 |
0 |
| VODI |
0 |
212 |
29 |
1749 |
841 |
2 |
0 |
0 |
| ODI |
0 |
122 |
11 |
233 |
1390 |
121 |
4 |
0 |
| CDI |
0 |
1 |
1 |
58 |
535 |
1873 |
125 |
1 |
| VCDI |
0 |
0 |
0 |
2 |
136 |
4308 |
9186 |
1631 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13172 |
7478 |
138 |
687 |
7 |
0 |
0 |
0 |
| OW |
0 |
446 |
60 |
1194 |
113 |
0 |
0 |
0 |
| VODI |
0 |
218 |
27 |
1727 |
985 |
6 |
0 |
0 |
| ODI |
0 |
124 |
9 |
295 |
1316 |
358 |
6 |
0 |
| CDI |
0 |
1 |
2 |
48 |
405 |
1740 |
146 |
1 |
| VCDI |
0 |
0 |
0 |
8 |
155 |
4200 |
9163 |
1631 |
|
Date: 2021-09-25:
| 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 |
11905 |
8232 |
131 |
472 |
93 |
0 |
0 |
0 |
| OW |
0 |
374 |
39 |
1015 |
547 |
58 |
0 |
0 |
| VODI |
0 |
142 |
19 |
519 |
2090 |
289 |
0 |
0 |
| ODI |
0 |
62 |
2 |
108 |
1134 |
566 |
2 |
0 |
| CDI |
0 |
8 |
7 |
61 |
281 |
1224 |
604 |
24 |
| VCDI |
0 |
0 |
0 |
14 |
143 |
1576 |
6868 |
7257 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11905 |
8400 |
142 |
657 |
181 |
0 |
0 |
0 |
| OW |
0 |
199 |
29 |
742 |
534 |
28 |
0 |
0 |
| VODI |
0 |
152 |
19 |
620 |
2058 |
305 |
0 |
0 |
| ODI |
0 |
58 |
2 |
98 |
1117 |
845 |
31 |
0 |
| CDI |
0 |
9 |
4 |
47 |
251 |
999 |
702 |
51 |
| VCDI |
0 |
0 |
2 |
25 |
147 |
1536 |
6741 |
7230 |
|
Date: 2021-09-27:
| 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 |
12401 |
7941 |
98 |
225 |
0 |
0 |
0 |
0 |
| OW |
0 |
300 |
62 |
516 |
19 |
0 |
0 |
0 |
| VODI |
0 |
92 |
14 |
794 |
642 |
1 |
0 |
0 |
| ODI |
0 |
15 |
3 |
71 |
3584 |
321 |
0 |
0 |
| CDI |
0 |
10 |
8 |
60 |
336 |
2534 |
257 |
16 |
| VCDI |
0 |
0 |
0 |
0 |
130 |
2304 |
7162 |
5950 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12401 |
7772 |
117 |
601 |
107 |
0 |
0 |
0 |
| OW |
0 |
336 |
28 |
428 |
501 |
15 |
0 |
0 |
| VODI |
0 |
159 |
26 |
412 |
2190 |
340 |
0 |
0 |
| ODI |
0 |
50 |
1 |
136 |
1348 |
810 |
0 |
0 |
| CDI |
0 |
22 |
5 |
50 |
324 |
1588 |
324 |
33 |
| VCDI |
0 |
19 |
8 |
39 |
241 |
2407 |
7095 |
5933 |
|
Date: 2021-09-29:
| 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 |
12675 |
7262 |
105 |
412 |
16 |
0 |
0 |
0 |
| OW |
0 |
293 |
51 |
605 |
91 |
0 |
0 |
0 |
| VODI |
0 |
58 |
15 |
488 |
856 |
43 |
1 |
0 |
| ODI |
0 |
22 |
3 |
52 |
2205 |
1268 |
12 |
0 |
| CDI |
0 |
19 |
8 |
52 |
381 |
2121 |
581 |
10 |
| VCDI |
0 |
0 |
0 |
23 |
180 |
1243 |
7897 |
6818 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12675 |
7058 |
112 |
674 |
100 |
0 |
0 |
0 |
| OW |
0 |
276 |
34 |
478 |
479 |
2 |
0 |
0 |
| VODI |
0 |
181 |
16 |
283 |
1629 |
731 |
57 |
0 |
| ODI |
0 |
80 |
5 |
94 |
889 |
1171 |
182 |
0 |
| CDI |
0 |
30 |
6 |
51 |
347 |
1544 |
577 |
1 |
| VCDI |
0 |
29 |
9 |
52 |
285 |
1227 |
7675 |
6827 |
|
Date: 2021-10-01:
| 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 |
11513 |
7867 |
102 |
408 |
74 |
0 |
0 |
0 |
| OW |
0 |
345 |
47 |
435 |
270 |
31 |
0 |
0 |
| VODI |
0 |
83 |
16 |
302 |
680 |
209 |
0 |
0 |
| ODI |
0 |
33 |
5 |
48 |
738 |
1933 |
19 |
0 |
| CDI |
0 |
23 |
7 |
42 |
322 |
2482 |
809 |
13 |
| VCDI |
0 |
8 |
3 |
62 |
266 |
2305 |
6894 |
7472 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11513 |
7746 |
114 |
622 |
336 |
31 |
0 |
0 |
| OW |
0 |
254 |
30 |
255 |
442 |
190 |
0 |
0 |
| VODI |
0 |
156 |
15 |
185 |
604 |
1601 |
178 |
0 |
| ODI |
0 |
103 |
6 |
81 |
331 |
1578 |
439 |
0 |
| CDI |
0 |
57 |
5 |
59 |
267 |
994 |
761 |
0 |
| VCDI |
0 |
43 |
10 |
95 |
370 |
2566 |
6344 |
7485 |
|
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