Validation of sea ice concentration - Full domain
Bulletin date: 2023-12-21
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-12-15:
| 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 |
68813 |
12182 |
339 |
479 |
412 |
10 |
4 |
0 |
| OW |
963 |
1689 |
347 |
507 |
610 |
110 |
6 |
0 |
| VODI |
2269 |
892 |
278 |
871 |
1050 |
441 |
11 |
0 |
| ODI |
1230 |
284 |
102 |
369 |
858 |
748 |
34 |
0 |
| CDI |
0 |
249 |
146 |
486 |
859 |
2385 |
835 |
0 |
| VCDI |
0 |
107 |
41 |
145 |
776 |
6872 |
23812 |
48189 |
|
...date precedes bulletin
|
Date: 2023-12-17:
| 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 |
68633 |
11711 |
217 |
275 |
327 |
250 |
5 |
0 |
| OW |
823 |
1561 |
229 |
358 |
297 |
255 |
20 |
0 |
| VODI |
2078 |
992 |
331 |
764 |
782 |
753 |
57 |
0 |
| ODI |
1550 |
426 |
169 |
381 |
730 |
1080 |
111 |
0 |
| CDI |
0 |
305 |
133 |
491 |
766 |
2142 |
1227 |
0 |
| VCDI |
0 |
135 |
67 |
206 |
707 |
6447 |
22717 |
50302 |
|
...date precedes bulletin
|
Date: 2023-12-19:
| 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 |
68379 |
11247 |
200 |
272 |
184 |
178 |
0 |
0 |
| OW |
816 |
1448 |
345 |
436 |
215 |
181 |
6 |
0 |
| VODI |
2010 |
495 |
302 |
1043 |
647 |
245 |
15 |
0 |
| ODI |
1632 |
73 |
81 |
491 |
1091 |
821 |
55 |
0 |
| CDI |
0 |
69 |
49 |
267 |
1011 |
3008 |
1041 |
15 |
| VCDI |
0 |
33 |
37 |
180 |
642 |
6306 |
25277 |
49967 |
|
...date precedes bulletin
|
Date: 2023-12-21:
| 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 |
66710 |
11761 |
252 |
280 |
101 |
189 |
0 |
0 |
| OW |
803 |
1326 |
221 |
428 |
283 |
229 |
0 |
0 |
| VODI |
1956 |
486 |
253 |
618 |
681 |
307 |
10 |
0 |
| ODI |
1700 |
75 |
98 |
593 |
1073 |
764 |
92 |
0 |
| CDI |
0 |
30 |
44 |
278 |
1197 |
2596 |
1190 |
0 |
| VCDI |
0 |
11 |
32 |
114 |
562 |
7171 |
25763 |
50533 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66710 |
11757 |
257 |
281 |
137 |
244 |
0 |
0 |
| OW |
802 |
1237 |
215 |
414 |
245 |
159 |
0 |
0 |
| VODI |
1949 |
572 |
248 |
604 |
629 |
280 |
11 |
0 |
| ODI |
1708 |
82 |
100 |
558 |
1062 |
740 |
75 |
0 |
| CDI |
0 |
31 |
48 |
329 |
1235 |
2627 |
1163 |
0 |
| VCDI |
0 |
10 |
32 |
125 |
589 |
7206 |
25806 |
50533 |
|
Date: 2023-12-23:
| 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 |
66013 |
11663 |
212 |
172 |
170 |
28 |
0 |
0 |
| OW |
838 |
1297 |
208 |
378 |
292 |
102 |
1 |
0 |
| VODI |
1913 |
704 |
249 |
602 |
700 |
156 |
50 |
0 |
| ODI |
1750 |
181 |
112 |
523 |
1042 |
476 |
114 |
0 |
| CDI |
0 |
62 |
67 |
408 |
1284 |
2107 |
1212 |
0 |
| VCDI |
0 |
8 |
8 |
86 |
655 |
6947 |
28190 |
49830 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66011 |
11703 |
217 |
198 |
204 |
80 |
0 |
0 |
| OW |
839 |
1219 |
232 |
350 |
244 |
53 |
4 |
0 |
| VODI |
1911 |
670 |
217 |
614 |
633 |
133 |
47 |
0 |
| ODI |
1753 |
217 |
111 |
461 |
1035 |
437 |
80 |
0 |
| CDI |
0 |
98 |
70 |
444 |
1298 |
2157 |
1302 |
0 |
| VCDI |
0 |
8 |
9 |
102 |
729 |
6956 |
28134 |
49830 |
|
Date: 2023-12-25:
| 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 |
66244 |
11259 |
133 |
97 |
22 |
10 |
2 |
0 |
| OW |
834 |
1668 |
245 |
258 |
71 |
67 |
14 |
0 |
| VODI |
1885 |
471 |
337 |
801 |
487 |
106 |
28 |
0 |
| ODI |
1793 |
54 |
60 |
440 |
1280 |
516 |
61 |
0 |
| CDI |
0 |
21 |
35 |
200 |
1083 |
2676 |
833 |
1 |
| VCDI |
0 |
8 |
7 |
57 |
293 |
5948 |
30592 |
49813 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
66260 |
10992 |
178 |
183 |
90 |
109 |
14 |
0 |
| OW |
823 |
1166 |
189 |
311 |
123 |
99 |
53 |
0 |
| VODI |
1880 |
792 |
212 |
482 |
457 |
235 |
143 |
0 |
| ODI |
1793 |
303 |
116 |
392 |
908 |
407 |
147 |
0 |
| CDI |
0 |
199 |
101 |
370 |
1073 |
2165 |
1505 |
7 |
| VCDI |
0 |
29 |
21 |
115 |
585 |
6308 |
29668 |
49807 |
|
Date: 2023-12-27:
| 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 |
65848 |
11495 |
102 |
77 |
22 |
0 |
0 |
0 |
| OW |
878 |
1520 |
182 |
202 |
124 |
74 |
7 |
0 |
| VODI |
1858 |
904 |
269 |
527 |
411 |
149 |
28 |
0 |
| ODI |
1825 |
169 |
118 |
417 |
847 |
372 |
103 |
0 |
| CDI |
0 |
89 |
81 |
390 |
1055 |
1727 |
524 |
0 |
| VCDI |
0 |
31 |
45 |
177 |
1020 |
7446 |
26288 |
53409 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65797 |
10827 |
128 |
119 |
89 |
84 |
5 |
0 |
| OW |
903 |
1182 |
130 |
228 |
155 |
140 |
53 |
0 |
| VODI |
1873 |
1057 |
153 |
336 |
328 |
268 |
127 |
0 |
| ODI |
1836 |
616 |
130 |
279 |
613 |
319 |
177 |
0 |
| CDI |
0 |
421 |
172 |
477 |
1009 |
1313 |
1112 |
1 |
| VCDI |
0 |
105 |
84 |
351 |
1285 |
7644 |
25476 |
53408 |
|
Date: 2023-12-29:
| 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 |
65591 |
11366 |
154 |
117 |
18 |
0 |
0 |
0 |
| OW |
939 |
1435 |
152 |
243 |
113 |
54 |
0 |
0 |
| VODI |
1841 |
747 |
237 |
404 |
353 |
229 |
32 |
0 |
| ODI |
1848 |
333 |
106 |
378 |
707 |
473 |
88 |
0 |
| CDI |
0 |
187 |
71 |
219 |
872 |
1610 |
875 |
0 |
| VCDI |
0 |
115 |
87 |
291 |
1055 |
7020 |
28823 |
51627 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
65374 |
10490 |
157 |
150 |
28 |
17 |
0 |
0 |
| OW |
986 |
1258 |
107 |
230 |
189 |
200 |
40 |
0 |
| VODI |
1928 |
871 |
150 |
252 |
274 |
273 |
113 |
0 |
| ODI |
1931 |
567 |
132 |
293 |
312 |
398 |
142 |
0 |
| CDI |
0 |
588 |
115 |
329 |
816 |
1265 |
938 |
3 |
| VCDI |
0 |
409 |
146 |
398 |
1499 |
7233 |
28585 |
51624 |
|
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