Validation of sea ice concentration
Bulletin date: 2024-02-22
Model vs. observations, sea ice class contingency tables
Date: 2024-02-16:
| 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 |
12408 |
6478 |
617 |
280 |
81 |
27 |
1 |
0 |
| OW |
2 |
258 |
174 |
122 |
81 |
53 |
4 |
0 |
| VODI |
0 |
178 |
256 |
188 |
143 |
83 |
23 |
0 |
| ODI |
0 |
80 |
146 |
149 |
142 |
115 |
74 |
0 |
| CDI |
0 |
13 |
135 |
187 |
156 |
185 |
445 |
7 |
| VCDI |
0 |
5 |
125 |
320 |
391 |
809 |
8169 |
5049 |
|
...date precedes bulletin
|
Date: 2024-02-20:
| 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 |
11283 |
6661 |
1038 |
759 |
154 |
36 |
1 |
0 |
| OW |
0 |
57 |
161 |
177 |
135 |
48 |
1 |
0 |
| VODI |
0 |
39 |
127 |
212 |
199 |
126 |
24 |
0 |
| ODI |
0 |
6 |
59 |
200 |
209 |
215 |
90 |
12 |
| CDI |
0 |
0 |
40 |
152 |
251 |
544 |
497 |
55 |
| VCDI |
0 |
0 |
67 |
210 |
392 |
1319 |
8049 |
4554 |
|
...date precedes bulletin
|
Date: 2024-02-22:
| 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 |
11832 |
6477 |
1079 |
374 |
150 |
48 |
3 |
0 |
| OW |
0 |
46 |
175 |
144 |
100 |
57 |
7 |
0 |
| VODI |
0 |
26 |
106 |
109 |
169 |
161 |
29 |
0 |
| ODI |
0 |
15 |
77 |
89 |
120 |
214 |
81 |
0 |
| CDI |
0 |
0 |
77 |
96 |
159 |
450 |
442 |
17 |
| VCDI |
0 |
0 |
71 |
145 |
245 |
846 |
8386 |
5537 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
11832 |
6486 |
1106 |
402 |
164 |
52 |
3 |
0 |
| OW |
0 |
35 |
144 |
127 |
99 |
68 |
6 |
0 |
| VODI |
0 |
24 |
111 |
102 |
154 |
148 |
32 |
0 |
| ODI |
0 |
19 |
72 |
78 |
121 |
196 |
78 |
1 |
| CDI |
0 |
0 |
80 |
104 |
154 |
432 |
413 |
21 |
| VCDI |
0 |
0 |
72 |
144 |
251 |
880 |
8416 |
5532 |
|
Date: 2024-02-26:
| 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 |
12231 |
6507 |
1191 |
272 |
116 |
41 |
26 |
0 |
| OW |
0 |
70 |
220 |
199 |
93 |
49 |
13 |
0 |
| VODI |
0 |
42 |
160 |
202 |
194 |
126 |
79 |
2 |
| ODI |
0 |
0 |
117 |
104 |
165 |
190 |
162 |
14 |
| CDI |
0 |
0 |
93 |
102 |
144 |
297 |
717 |
33 |
| VCDI |
0 |
0 |
88 |
238 |
197 |
558 |
7583 |
5524 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12231 |
6433 |
987 |
193 |
97 |
42 |
30 |
0 |
| OW |
0 |
73 |
259 |
154 |
91 |
28 |
19 |
0 |
| VODI |
0 |
41 |
189 |
188 |
169 |
94 |
90 |
2 |
| ODI |
0 |
31 |
103 |
148 |
119 |
126 |
153 |
19 |
| CDI |
0 |
33 |
107 |
125 |
135 |
210 |
424 |
36 |
| VCDI |
0 |
8 |
224 |
309 |
298 |
761 |
7864 |
5516 |
|
Date: 2024-02-28:
| 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 |
12748 |
6314 |
908 |
260 |
78 |
18 |
19 |
0 |
| OW |
0 |
76 |
210 |
227 |
80 |
38 |
17 |
0 |
| VODI |
0 |
73 |
143 |
251 |
129 |
102 |
57 |
0 |
| ODI |
0 |
47 |
98 |
169 |
89 |
160 |
132 |
0 |
| CDI |
0 |
17 |
93 |
168 |
130 |
178 |
440 |
14 |
| VCDI |
0 |
0 |
118 |
270 |
236 |
500 |
8599 |
4953 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
12748 |
6182 |
692 |
196 |
58 |
17 |
29 |
0 |
| OW |
0 |
97 |
244 |
155 |
79 |
25 |
21 |
0 |
| VODI |
0 |
84 |
215 |
263 |
126 |
82 |
71 |
0 |
| ODI |
0 |
58 |
80 |
193 |
93 |
156 |
127 |
0 |
| CDI |
0 |
53 |
113 |
154 |
111 |
188 |
443 |
32 |
| VCDI |
0 |
53 |
226 |
384 |
275 |
528 |
8573 |
4935 |
|
Date: 2024-03-01:
| 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 |
13195 |
6390 |
527 |
199 |
32 |
2 |
4 |
0 |
| OW |
0 |
173 |
241 |
205 |
71 |
19 |
12 |
0 |
| VODI |
0 |
108 |
220 |
255 |
128 |
42 |
45 |
0 |
| ODI |
0 |
49 |
107 |
200 |
101 |
95 |
120 |
0 |
| CDI |
0 |
25 |
81 |
207 |
138 |
138 |
433 |
7 |
| VCDI |
0 |
8 |
155 |
369 |
358 |
731 |
8944 |
4025 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13195 |
6180 |
437 |
193 |
29 |
3 |
4 |
0 |
| OW |
0 |
225 |
201 |
117 |
52 |
10 |
5 |
0 |
| VODI |
0 |
154 |
251 |
250 |
135 |
32 |
39 |
0 |
| ODI |
0 |
80 |
113 |
200 |
116 |
98 |
153 |
0 |
| CDI |
0 |
70 |
113 |
235 |
112 |
155 |
479 |
2 |
| VCDI |
0 |
44 |
216 |
440 |
384 |
729 |
8878 |
4030 |
|
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