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 |
78778 |
13883 |
500 |
771 |
563 |
223 |
194 |
0 |
| OW |
56 |
1061 |
283 |
534 |
626 |
193 |
17 |
0 |
| VODI |
0 |
616 |
218 |
596 |
872 |
460 |
34 |
0 |
| ODI |
0 |
205 |
101 |
386 |
648 |
547 |
40 |
0 |
| CDI |
0 |
158 |
73 |
288 |
768 |
1197 |
165 |
2 |
| VCDI |
0 |
159 |
78 |
282 |
1088 |
7946 |
24252 |
48187 |
|
...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 |
78769 |
13226 |
346 |
470 |
435 |
385 |
248 |
0 |
| OW |
62 |
1064 |
260 |
518 |
468 |
394 |
28 |
0 |
| VODI |
0 |
684 |
225 |
467 |
590 |
743 |
58 |
0 |
| ODI |
0 |
318 |
133 |
375 |
553 |
659 |
101 |
0 |
| CDI |
0 |
138 |
87 |
304 |
498 |
991 |
372 |
5 |
| VCDI |
0 |
191 |
95 |
341 |
1065 |
7755 |
23330 |
50297 |
|
...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 |
78253 |
12613 |
357 |
529 |
251 |
234 |
246 |
0 |
| OW |
62 |
883 |
226 |
488 |
263 |
84 |
11 |
0 |
| VODI |
0 |
419 |
271 |
884 |
753 |
265 |
10 |
0 |
| ODI |
0 |
106 |
69 |
349 |
898 |
878 |
60 |
0 |
| CDI |
0 |
69 |
45 |
211 |
742 |
2075 |
520 |
1 |
| VCDI |
0 |
35 |
46 |
228 |
883 |
7203 |
25547 |
49981 |
|
...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 |
76337 |
13117 |
386 |
465 |
262 |
203 |
276 |
0 |
| OW |
62 |
828 |
175 |
466 |
309 |
102 |
22 |
0 |
| VODI |
0 |
509 |
153 |
552 |
756 |
212 |
26 |
0 |
| ODI |
0 |
119 |
73 |
412 |
966 |
464 |
30 |
0 |
| CDI |
0 |
90 |
36 |
165 |
792 |
1794 |
286 |
13 |
| VCDI |
0 |
34 |
77 |
251 |
812 |
8481 |
26415 |
50520 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76337 |
13178 |
400 |
512 |
274 |
215 |
281 |
0 |
| OW |
62 |
744 |
168 |
433 |
324 |
88 |
20 |
0 |
| VODI |
0 |
505 |
131 |
533 |
813 |
219 |
25 |
0 |
| ODI |
0 |
135 |
84 |
395 |
882 |
487 |
22 |
0 |
| CDI |
0 |
96 |
39 |
177 |
773 |
1593 |
236 |
14 |
| VCDI |
0 |
39 |
78 |
261 |
831 |
8654 |
26471 |
50519 |
|
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 |
75777 |
13093 |
393 |
464 |
264 |
190 |
220 |
0 |
| OW |
98 |
863 |
129 |
314 |
341 |
87 |
22 |
0 |
| VODI |
1 |
454 |
162 |
457 |
609 |
232 |
26 |
0 |
| ODI |
0 |
198 |
83 |
443 |
934 |
451 |
54 |
0 |
| CDI |
0 |
91 |
34 |
216 |
1001 |
1264 |
329 |
24 |
| VCDI |
0 |
92 |
55 |
275 |
994 |
7592 |
28916 |
49806 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75771 |
13207 |
394 |
475 |
286 |
199 |
217 |
0 |
| OW |
105 |
761 |
137 |
319 |
335 |
87 |
25 |
0 |
| VODI |
0 |
426 |
147 |
408 |
679 |
254 |
18 |
0 |
| ODI |
0 |
203 |
79 |
438 |
849 |
476 |
62 |
0 |
| CDI |
0 |
101 |
46 |
260 |
1026 |
1169 |
358 |
26 |
| VCDI |
0 |
93 |
53 |
269 |
968 |
7631 |
28887 |
49804 |
|
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 |
76108 |
13239 |
336 |
327 |
137 |
200 |
175 |
0 |
| OW |
65 |
532 |
185 |
337 |
174 |
38 |
9 |
0 |
| VODI |
2 |
320 |
172 |
584 |
495 |
148 |
19 |
0 |
| ODI |
1 |
108 |
47 |
304 |
1075 |
476 |
47 |
0 |
| CDI |
0 |
84 |
53 |
171 |
910 |
1935 |
306 |
0 |
| VCDI |
0 |
16 |
24 |
130 |
445 |
6526 |
30974 |
49814 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
76102 |
12648 |
356 |
382 |
208 |
256 |
200 |
0 |
| OW |
73 |
710 |
148 |
316 |
198 |
98 |
27 |
0 |
| VODI |
1 |
479 |
145 |
450 |
455 |
284 |
76 |
0 |
| ODI |
0 |
157 |
43 |
280 |
805 |
532 |
97 |
0 |
| CDI |
0 |
143 |
36 |
157 |
819 |
1252 |
485 |
1 |
| VCDI |
0 |
162 |
89 |
268 |
751 |
6901 |
30645 |
49813 |
|
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 |
74798 |
14257 |
227 |
261 |
127 |
150 |
189 |
0 |
| OW |
70 |
855 |
167 |
227 |
134 |
37 |
25 |
0 |
| VODI |
2 |
475 |
202 |
473 |
418 |
121 |
25 |
0 |
| ODI |
2 |
179 |
66 |
351 |
733 |
263 |
37 |
0 |
| CDI |
0 |
129 |
67 |
224 |
927 |
1175 |
245 |
4 |
| VCDI |
0 |
88 |
68 |
254 |
1140 |
8022 |
26429 |
53405 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
74780 |
13580 |
204 |
258 |
186 |
197 |
248 |
0 |
| OW |
91 |
913 |
121 |
181 |
120 |
86 |
32 |
0 |
| VODI |
1 |
821 |
166 |
332 |
343 |
165 |
50 |
0 |
| ODI |
0 |
312 |
120 |
432 |
578 |
307 |
74 |
0 |
| CDI |
0 |
166 |
69 |
195 |
731 |
760 |
295 |
10 |
| VCDI |
0 |
191 |
117 |
392 |
1521 |
8253 |
26251 |
53399 |
|
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 |
75770 |
12640 |
238 |
266 |
105 |
106 |
239 |
0 |
| OW |
75 |
1076 |
154 |
222 |
108 |
29 |
38 |
0 |
| VODI |
0 |
577 |
177 |
377 |
358 |
124 |
33 |
0 |
| ODI |
0 |
204 |
88 |
300 |
700 |
272 |
42 |
0 |
| CDI |
0 |
131 |
52 |
187 |
696 |
1018 |
236 |
0 |
| VCDI |
0 |
167 |
98 |
300 |
1151 |
7837 |
29230 |
51627 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
75737 |
11852 |
201 |
245 |
136 |
130 |
304 |
0 |
| OW |
107 |
1044 |
121 |
194 |
72 |
92 |
47 |
0 |
| VODI |
1 |
957 |
144 |
287 |
266 |
141 |
89 |
0 |
| ODI |
0 |
410 |
136 |
305 |
432 |
246 |
85 |
0 |
| CDI |
0 |
230 |
62 |
222 |
758 |
607 |
264 |
42 |
| VCDI |
0 |
302 |
143 |
399 |
1454 |
8170 |
29029 |
51585 |
|
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