Validation of sea ice concentration - American sector
Bulletin date: 2023-05-25
Data source: OSI SAF N.H. sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-19:
| 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 |
0 |
142 |
58 |
62 |
3 |
0 |
0 |
0 |
| OW |
0 |
83 |
60 |
250 |
80 |
0 |
0 |
0 |
| VODI |
0 |
73 |
72 |
387 |
325 |
67 |
3 |
0 |
| ODI |
0 |
7 |
22 |
269 |
418 |
285 |
41 |
7 |
| CDI |
0 |
17 |
8 |
159 |
445 |
820 |
897 |
27 |
| VCDI |
0 |
0 |
2 |
69 |
495 |
2970 |
19255 |
17988 |
|
...date precedes bulletin
|
Date: 2023-05-21:
| 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 |
0 |
159 |
35 |
52 |
1 |
0 |
0 |
0 |
| OW |
0 |
168 |
97 |
251 |
120 |
3 |
0 |
0 |
| VODI |
0 |
95 |
70 |
410 |
387 |
93 |
8 |
0 |
| ODI |
0 |
25 |
25 |
318 |
349 |
355 |
50 |
0 |
| CDI |
0 |
6 |
10 |
227 |
430 |
849 |
719 |
3 |
| VCDI |
0 |
0 |
0 |
75 |
554 |
3106 |
19984 |
16832 |
|
...date precedes bulletin
|
Date: 2023-05-23:
| 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 |
0 |
552 |
181 |
226 |
18 |
0 |
0 |
0 |
| OW |
0 |
48 |
67 |
445 |
78 |
0 |
1 |
0 |
| VODI |
0 |
21 |
20 |
429 |
398 |
35 |
6 |
0 |
| ODI |
0 |
13 |
6 |
169 |
520 |
256 |
14 |
0 |
| CDI |
0 |
0 |
3 |
156 |
427 |
912 |
366 |
78 |
| VCDI |
0 |
0 |
0 |
26 |
238 |
1897 |
13254 |
25006 |
|
...date precedes bulletin
|
Date: 2023-05-25:
| 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 |
0 |
516 |
227 |
345 |
12 |
0 |
0 |
0 |
| OW |
0 |
66 |
66 |
494 |
115 |
6 |
0 |
0 |
| VODI |
0 |
34 |
34 |
378 |
567 |
25 |
1 |
0 |
| ODI |
0 |
21 |
9 |
197 |
609 |
114 |
29 |
0 |
| CDI |
0 |
12 |
9 |
181 |
912 |
917 |
312 |
2 |
| VCDI |
0 |
10 |
10 |
41 |
896 |
3505 |
10609 |
24585 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
489 |
222 |
435 |
30 |
0 |
0 |
0 |
| OW |
0 |
96 |
69 |
409 |
127 |
7 |
0 |
0 |
| VODI |
0 |
26 |
35 |
375 |
520 |
20 |
2 |
0 |
| ODI |
0 |
24 |
9 |
187 |
549 |
99 |
30 |
0 |
| CDI |
0 |
14 |
9 |
189 |
938 |
918 |
303 |
5 |
| VCDI |
0 |
10 |
11 |
41 |
947 |
3523 |
10616 |
24582 |
|
Date: 2023-05-27:
| 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 |
0 |
573 |
236 |
320 |
29 |
0 |
0 |
0 |
| OW |
0 |
116 |
82 |
494 |
180 |
4 |
0 |
0 |
| VODI |
0 |
82 |
38 |
354 |
579 |
63 |
11 |
0 |
| ODI |
0 |
43 |
37 |
160 |
506 |
206 |
43 |
0 |
| CDI |
0 |
38 |
16 |
260 |
578 |
1340 |
678 |
0 |
| VCDI |
0 |
66 |
11 |
236 |
950 |
2345 |
9479 |
25713 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
556 |
245 |
459 |
59 |
0 |
0 |
0 |
| OW |
0 |
119 |
69 |
388 |
191 |
2 |
0 |
0 |
| VODI |
0 |
82 |
40 |
342 |
487 |
60 |
10 |
0 |
| ODI |
0 |
46 |
31 |
135 |
497 |
158 |
48 |
0 |
| CDI |
0 |
43 |
23 |
242 |
601 |
1513 |
591 |
0 |
| VCDI |
0 |
72 |
12 |
258 |
987 |
2225 |
9562 |
25713 |
|
Date: 2023-05-29:
| 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 |
0 |
651 |
266 |
392 |
50 |
0 |
0 |
0 |
| OW |
0 |
62 |
64 |
576 |
130 |
3 |
0 |
0 |
| VODI |
0 |
39 |
22 |
614 |
756 |
11 |
0 |
0 |
| ODI |
0 |
21 |
20 |
198 |
1101 |
164 |
6 |
0 |
| CDI |
0 |
18 |
18 |
261 |
2329 |
3208 |
229 |
0 |
| VCDI |
0 |
0 |
0 |
50 |
193 |
1621 |
14986 |
17807 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
487 |
223 |
489 |
144 |
0 |
0 |
0 |
| OW |
0 |
121 |
49 |
459 |
226 |
6 |
0 |
0 |
| VODI |
0 |
63 |
25 |
384 |
522 |
14 |
9 |
0 |
| ODI |
0 |
43 |
28 |
188 |
687 |
149 |
54 |
0 |
| CDI |
0 |
45 |
42 |
282 |
1663 |
1853 |
418 |
0 |
| VCDI |
0 |
32 |
23 |
289 |
1317 |
2985 |
14740 |
17807 |
|
Date: 2023-05-31:
| 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 |
0 |
781 |
298 |
684 |
77 |
0 |
0 |
0 |
| OW |
0 |
50 |
32 |
541 |
488 |
52 |
0 |
0 |
| VODI |
0 |
21 |
13 |
315 |
667 |
350 |
11 |
0 |
| ODI |
0 |
18 |
9 |
140 |
413 |
581 |
245 |
0 |
| CDI |
0 |
51 |
15 |
124 |
665 |
2164 |
2440 |
1 |
| VCDI |
0 |
2 |
1 |
34 |
388 |
2041 |
14111 |
18043 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
594 |
219 |
561 |
197 |
1 |
0 |
0 |
| OW |
0 |
145 |
45 |
320 |
362 |
25 |
0 |
0 |
| VODI |
0 |
62 |
49 |
292 |
474 |
145 |
30 |
0 |
| ODI |
0 |
41 |
17 |
207 |
356 |
451 |
160 |
0 |
| CDI |
0 |
47 |
16 |
279 |
684 |
1941 |
2016 |
3 |
| VCDI |
0 |
34 |
22 |
179 |
625 |
2625 |
14601 |
18041 |
|
Date: 2023-06-02:
| 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 |
0 |
1007 |
314 |
912 |
244 |
24 |
0 |
0 |
| OW |
0 |
60 |
37 |
435 |
595 |
168 |
2 |
0 |
| VODI |
0 |
33 |
15 |
290 |
504 |
277 |
69 |
0 |
| ODI |
0 |
13 |
9 |
132 |
361 |
784 |
223 |
0 |
| CDI |
0 |
14 |
25 |
96 |
598 |
1902 |
2766 |
1 |
| VCDI |
0 |
0 |
0 |
164 |
304 |
2025 |
14654 |
16809 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
749 |
205 |
643 |
292 |
1 |
0 |
0 |
| OW |
0 |
161 |
66 |
339 |
320 |
22 |
1 |
0 |
| VODI |
0 |
112 |
65 |
270 |
472 |
196 |
42 |
0 |
| ODI |
0 |
62 |
21 |
231 |
338 |
532 |
214 |
0 |
| CDI |
0 |
37 |
22 |
284 |
580 |
2032 |
2735 |
7 |
| VCDI |
0 |
6 |
21 |
262 |
604 |
2397 |
14722 |
16803 |
|
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