Validation of sea ice concentration - American sector
Bulletin date: 2024-05-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-05-17:
| 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 |
0 |
188 |
5 |
9 |
2 |
0 |
0 |
0 |
| OW |
0 |
286 |
29 |
40 |
47 |
0 |
0 |
0 |
| VODI |
0 |
145 |
42 |
95 |
74 |
23 |
0 |
0 |
| ODI |
0 |
104 |
48 |
114 |
119 |
42 |
23 |
0 |
| CDI |
0 |
227 |
142 |
429 |
707 |
851 |
438 |
0 |
| VCDI |
0 |
17 |
24 |
151 |
509 |
3395 |
25739 |
11802 |
|
...date precedes bulletin
|
Date: 2024-05-19:
| 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 |
306 |
8 |
8 |
4 |
0 |
0 |
0 |
| OW |
0 |
300 |
36 |
45 |
21 |
3 |
0 |
0 |
| VODI |
0 |
217 |
36 |
80 |
64 |
4 |
0 |
0 |
| ODI |
0 |
160 |
53 |
140 |
120 |
43 |
5 |
0 |
| CDI |
0 |
367 |
182 |
483 |
769 |
808 |
435 |
0 |
| VCDI |
0 |
261 |
57 |
401 |
858 |
3342 |
21639 |
14611 |
|
...date precedes bulletin
|
Date: 2024-05-21:
| 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 |
596 |
22 |
26 |
4 |
0 |
0 |
0 |
| OW |
0 |
606 |
46 |
67 |
29 |
2 |
0 |
0 |
| VODI |
0 |
265 |
112 |
221 |
106 |
12 |
3 |
0 |
| ODI |
0 |
140 |
55 |
215 |
304 |
115 |
7 |
0 |
| CDI |
0 |
219 |
124 |
435 |
796 |
1405 |
347 |
1 |
| VCDI |
0 |
68 |
44 |
171 |
414 |
3296 |
22622 |
12971 |
|
...date precedes bulletin
|
Date: 2024-05-23:
| 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 |
804 |
25 |
30 |
5 |
5 |
0 |
0 |
| OW |
0 |
560 |
51 |
104 |
34 |
3 |
0 |
0 |
| VODI |
0 |
288 |
87 |
228 |
72 |
25 |
4 |
0 |
| ODI |
0 |
175 |
66 |
209 |
221 |
81 |
13 |
0 |
| CDI |
0 |
269 |
139 |
555 |
755 |
1082 |
723 |
1 |
| VCDI |
0 |
137 |
65 |
200 |
432 |
2769 |
26206 |
9443 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
750 |
25 |
31 |
4 |
3 |
0 |
0 |
| OW |
0 |
544 |
35 |
69 |
23 |
3 |
0 |
0 |
| VODI |
0 |
300 |
89 |
225 |
66 |
14 |
4 |
0 |
| ODI |
0 |
201 |
70 |
210 |
186 |
63 |
14 |
0 |
| CDI |
0 |
297 |
157 |
585 |
784 |
1075 |
685 |
1 |
| VCDI |
0 |
141 |
57 |
206 |
456 |
2807 |
26243 |
9443 |
|
Date: 2024-05-25:
| 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 |
914 |
30 |
34 |
13 |
4 |
0 |
0 |
| OW |
0 |
498 |
58 |
80 |
17 |
4 |
0 |
0 |
| VODI |
0 |
344 |
89 |
211 |
69 |
15 |
9 |
0 |
| ODI |
0 |
212 |
73 |
256 |
235 |
84 |
27 |
0 |
| CDI |
0 |
310 |
133 |
511 |
724 |
1165 |
791 |
2 |
| VCDI |
0 |
159 |
72 |
203 |
389 |
2051 |
24781 |
11299 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
876 |
30 |
35 |
12 |
3 |
0 |
0 |
| OW |
0 |
443 |
43 |
74 |
9 |
3 |
0 |
0 |
| VODI |
0 |
395 |
87 |
163 |
54 |
13 |
6 |
0 |
| ODI |
0 |
213 |
83 |
274 |
194 |
65 |
25 |
0 |
| CDI |
0 |
311 |
141 |
545 |
799 |
1146 |
668 |
2 |
| VCDI |
0 |
199 |
71 |
204 |
379 |
2093 |
24909 |
11299 |
|
Date: 2024-05-27:
| 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 |
1192 |
13 |
15 |
5 |
1 |
0 |
0 |
| OW |
0 |
769 |
64 |
87 |
5 |
2 |
0 |
0 |
| VODI |
0 |
388 |
172 |
494 |
171 |
19 |
6 |
0 |
| ODI |
0 |
183 |
93 |
341 |
464 |
162 |
27 |
0 |
| CDI |
0 |
220 |
92 |
336 |
824 |
1571 |
647 |
0 |
| VCDI |
0 |
6 |
11 |
79 |
245 |
2858 |
27826 |
6478 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
930 |
16 |
28 |
5 |
1 |
0 |
0 |
| OW |
0 |
470 |
16 |
60 |
4 |
1 |
0 |
0 |
| VODI |
0 |
440 |
79 |
157 |
62 |
14 |
9 |
0 |
| ODI |
0 |
277 |
97 |
324 |
218 |
72 |
26 |
0 |
| CDI |
0 |
412 |
181 |
530 |
902 |
1119 |
720 |
0 |
| VCDI |
0 |
229 |
56 |
253 |
523 |
3406 |
27751 |
6478 |
|
Date: 2024-05-29:
| 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 |
1377 |
28 |
21 |
5 |
1 |
0 |
0 |
| OW |
0 |
743 |
80 |
83 |
15 |
6 |
2 |
0 |
| VODI |
0 |
463 |
213 |
471 |
179 |
19 |
7 |
0 |
| ODI |
0 |
176 |
70 |
305 |
393 |
93 |
40 |
1 |
| CDI |
0 |
265 |
104 |
351 |
792 |
1498 |
867 |
2 |
| VCDI |
0 |
17 |
36 |
159 |
340 |
4005 |
25820 |
6819 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1058 |
23 |
14 |
4 |
1 |
0 |
0 |
| OW |
0 |
441 |
32 |
55 |
7 |
4 |
0 |
0 |
| VODI |
0 |
475 |
92 |
212 |
76 |
11 |
15 |
0 |
| ODI |
0 |
353 |
103 |
295 |
226 |
34 |
36 |
1 |
| CDI |
0 |
416 |
169 |
507 |
908 |
1164 |
797 |
1 |
| VCDI |
0 |
298 |
112 |
307 |
503 |
4408 |
25888 |
6820 |
|
Date: 2024-05-31:
| 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 |
42 |
1240 |
14 |
8 |
3 |
0 |
0 |
0 |
| OW |
0 |
722 |
95 |
92 |
12 |
6 |
3 |
0 |
| VODI |
0 |
579 |
170 |
468 |
148 |
18 |
14 |
0 |
| ODI |
0 |
245 |
72 |
302 |
455 |
120 |
44 |
0 |
| CDI |
0 |
350 |
119 |
374 |
865 |
1623 |
845 |
1 |
| VCDI |
0 |
184 |
64 |
271 |
569 |
3780 |
26596 |
5353 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
42 |
966 |
13 |
11 |
3 |
0 |
0 |
0 |
| OW |
0 |
403 |
44 |
57 |
9 |
4 |
0 |
0 |
| VODI |
0 |
526 |
108 |
223 |
73 |
17 |
16 |
0 |
| ODI |
0 |
425 |
91 |
318 |
241 |
56 |
54 |
0 |
| CDI |
0 |
588 |
165 |
523 |
960 |
1091 |
755 |
7 |
| VCDI |
0 |
412 |
113 |
383 |
766 |
4379 |
26677 |
5347 |
|
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