Validation of sea ice concentration - American sector
Bulletin date: 2023-10-19
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-10-13:
| 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 |
32938 |
5064 |
226 |
304 |
23 |
1 |
0 |
0 |
| OW |
0 |
531 |
212 |
665 |
326 |
24 |
0 |
0 |
| VODI |
0 |
54 |
49 |
324 |
574 |
88 |
0 |
0 |
| ODI |
0 |
2 |
9 |
167 |
487 |
219 |
0 |
0 |
| CDI |
0 |
0 |
0 |
63 |
466 |
1105 |
279 |
2 |
| VCDI |
0 |
0 |
0 |
4 |
50 |
1270 |
6035 |
9670 |
|
...date precedes bulletin
|
Date: 2023-10-15:
| 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 |
32074 |
5375 |
168 |
293 |
22 |
0 |
0 |
0 |
| OW |
1 |
475 |
187 |
498 |
368 |
19 |
0 |
0 |
| VODI |
0 |
126 |
90 |
301 |
701 |
288 |
0 |
0 |
| ODI |
0 |
4 |
25 |
142 |
390 |
379 |
20 |
0 |
| CDI |
0 |
0 |
0 |
95 |
393 |
1175 |
124 |
0 |
| VCDI |
0 |
0 |
0 |
10 |
166 |
1450 |
7094 |
8778 |
|
...date precedes bulletin
|
Date: 2023-10-17:
| 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 |
30972 |
5818 |
253 |
520 |
46 |
0 |
0 |
0 |
| OW |
0 |
348 |
176 |
538 |
71 |
0 |
0 |
0 |
| VODI |
0 |
32 |
40 |
503 |
396 |
20 |
0 |
0 |
| ODI |
0 |
0 |
0 |
112 |
771 |
199 |
0 |
0 |
| CDI |
0 |
0 |
0 |
33 |
347 |
2322 |
331 |
0 |
| VCDI |
0 |
0 |
0 |
2 |
104 |
867 |
6220 |
10190 |
|
...date precedes bulletin
|
Date: 2023-10-19:
| 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 |
29951 |
6021 |
333 |
608 |
164 |
0 |
0 |
0 |
| OW |
0 |
226 |
123 |
512 |
278 |
2 |
0 |
0 |
| VODI |
0 |
40 |
25 |
392 |
523 |
42 |
0 |
0 |
| ODI |
0 |
1 |
5 |
96 |
556 |
315 |
2 |
0 |
| CDI |
0 |
0 |
1 |
45 |
267 |
1672 |
804 |
1 |
| VCDI |
0 |
0 |
0 |
8 |
86 |
1127 |
6600 |
10405 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
29947 |
6030 |
345 |
661 |
151 |
0 |
0 |
0 |
| OW |
3 |
228 |
117 |
513 |
325 |
2 |
0 |
0 |
| VODI |
1 |
29 |
20 |
358 |
565 |
70 |
0 |
0 |
| ODI |
0 |
1 |
4 |
79 |
479 |
331 |
8 |
0 |
| CDI |
0 |
0 |
1 |
41 |
250 |
1661 |
871 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
104 |
1094 |
6527 |
10406 |
|
Date: 2023-10-21:
| 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 |
29104 |
6025 |
301 |
561 |
85 |
15 |
0 |
0 |
| OW |
1 |
354 |
134 |
468 |
280 |
69 |
0 |
0 |
| VODI |
0 |
73 |
42 |
280 |
587 |
137 |
0 |
0 |
| ODI |
0 |
5 |
17 |
68 |
428 |
276 |
0 |
0 |
| CDI |
0 |
0 |
6 |
63 |
242 |
1503 |
116 |
0 |
| VCDI |
0 |
0 |
0 |
33 |
161 |
2223 |
7694 |
9880 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
29078 |
6105 |
323 |
629 |
138 |
13 |
0 |
0 |
| OW |
25 |
283 |
116 |
440 |
281 |
24 |
0 |
0 |
| VODI |
2 |
62 |
44 |
243 |
614 |
215 |
0 |
0 |
| ODI |
0 |
7 |
12 |
69 |
364 |
327 |
0 |
0 |
| CDI |
0 |
0 |
5 |
67 |
224 |
1372 |
199 |
0 |
| VCDI |
0 |
0 |
0 |
25 |
162 |
2272 |
7611 |
9880 |
|
Date: 2023-10-23:
| 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 |
28381 |
6369 |
232 |
194 |
2 |
0 |
0 |
0 |
| OW |
0 |
326 |
250 |
558 |
28 |
1 |
0 |
0 |
| VODI |
0 |
6 |
14 |
869 |
488 |
40 |
0 |
0 |
| ODI |
0 |
1 |
0 |
112 |
1010 |
159 |
0 |
0 |
| CDI |
0 |
0 |
0 |
37 |
425 |
1019 |
12 |
0 |
| VCDI |
0 |
0 |
0 |
7 |
64 |
3323 |
8037 |
9267 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
28331 |
6276 |
228 |
304 |
18 |
0 |
0 |
0 |
| OW |
47 |
387 |
195 |
657 |
170 |
26 |
0 |
0 |
| VODI |
3 |
32 |
57 |
592 |
661 |
119 |
0 |
0 |
| ODI |
0 |
7 |
9 |
144 |
519 |
180 |
0 |
0 |
| CDI |
0 |
0 |
7 |
49 |
411 |
605 |
133 |
0 |
| VCDI |
0 |
0 |
0 |
31 |
238 |
3612 |
7916 |
9267 |
|
Date: 2023-10-25:
| 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 |
28863 |
5570 |
163 |
139 |
29 |
0 |
0 |
0 |
| OW |
0 |
443 |
203 |
578 |
121 |
7 |
0 |
0 |
| VODI |
0 |
74 |
53 |
606 |
531 |
70 |
0 |
0 |
| ODI |
0 |
9 |
11 |
138 |
581 |
339 |
0 |
0 |
| CDI |
0 |
1 |
0 |
32 |
410 |
1290 |
3 |
0 |
| VCDI |
0 |
0 |
0 |
9 |
104 |
4114 |
7538 |
9202 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
28820 |
5302 |
151 |
230 |
105 |
0 |
0 |
0 |
| OW |
40 |
677 |
160 |
496 |
222 |
20 |
0 |
0 |
| VODI |
3 |
102 |
108 |
559 |
537 |
174 |
0 |
0 |
| ODI |
0 |
11 |
8 |
134 |
497 |
208 |
0 |
0 |
| CDI |
0 |
5 |
2 |
51 |
298 |
992 |
4 |
0 |
| VCDI |
0 |
0 |
1 |
32 |
117 |
4426 |
7537 |
9202 |
|
Date: 2023-10-27:
| 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 |
27741 |
5776 |
212 |
295 |
7 |
0 |
0 |
0 |
| OW |
0 |
409 |
190 |
642 |
265 |
1 |
0 |
0 |
| VODI |
0 |
94 |
71 |
475 |
578 |
128 |
0 |
0 |
| ODI |
0 |
8 |
11 |
165 |
489 |
409 |
0 |
0 |
| CDI |
0 |
0 |
0 |
49 |
428 |
1015 |
49 |
0 |
| VCDI |
0 |
0 |
0 |
0 |
155 |
4348 |
7480 |
9741 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
27731 |
5446 |
171 |
299 |
76 |
19 |
0 |
0 |
| OW |
5 |
713 |
213 |
524 |
244 |
61 |
0 |
0 |
| VODI |
5 |
127 |
93 |
500 |
745 |
246 |
0 |
0 |
| ODI |
0 |
1 |
7 |
214 |
391 |
295 |
0 |
0 |
| CDI |
0 |
0 |
0 |
73 |
332 |
939 |
23 |
0 |
| VCDI |
0 |
0 |
0 |
16 |
134 |
4341 |
7506 |
9741 |
|
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