Validation of sea ice concentration
Bulletin date: 2023-11-09
Model vs. observations, sea ice class contingency tables
Date: 2023-11-03:
| 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 |
17879 |
7082 |
842 |
395 |
229 |
243 |
42 |
0 |
| OW |
1 |
24 |
154 |
143 |
72 |
61 |
37 |
0 |
| VODI |
0 |
4 |
48 |
149 |
200 |
125 |
55 |
0 |
| ODI |
0 |
0 |
7 |
99 |
142 |
302 |
85 |
0 |
| CDI |
0 |
0 |
0 |
65 |
109 |
427 |
248 |
0 |
| VCDI |
0 |
0 |
0 |
3 |
42 |
812 |
4510 |
3523 |
|
...date precedes bulletin
|
Date: 2023-11-07:
| 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 |
17200 |
7431 |
735 |
403 |
186 |
238 |
17 |
0 |
| OW |
0 |
25 |
168 |
139 |
55 |
100 |
21 |
0 |
| VODI |
0 |
10 |
56 |
167 |
54 |
101 |
33 |
0 |
| ODI |
0 |
2 |
5 |
64 |
80 |
148 |
75 |
1 |
| CDI |
0 |
0 |
0 |
28 |
73 |
221 |
404 |
5 |
| VCDI |
0 |
0 |
0 |
17 |
54 |
359 |
6481 |
3003 |
|
...date precedes bulletin
|
Date: 2023-11-09:
| 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 |
17076 |
7217 |
584 |
427 |
211 |
189 |
68 |
0 |
| OW |
0 |
149 |
121 |
152 |
89 |
68 |
40 |
0 |
| VODI |
0 |
58 |
81 |
147 |
91 |
108 |
56 |
0 |
| ODI |
0 |
8 |
31 |
57 |
56 |
141 |
71 |
0 |
| CDI |
0 |
0 |
15 |
64 |
74 |
181 |
355 |
8 |
| VCDI |
0 |
0 |
1 |
35 |
60 |
310 |
5981 |
3779 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
17076 |
7201 |
595 |
451 |
228 |
219 |
76 |
0 |
| OW |
0 |
131 |
91 |
123 |
65 |
54 |
41 |
0 |
| VODI |
0 |
87 |
93 |
146 |
96 |
93 |
50 |
0 |
| ODI |
0 |
13 |
32 |
54 |
60 |
134 |
70 |
0 |
| CDI |
0 |
0 |
21 |
74 |
64 |
182 |
341 |
7 |
| VCDI |
0 |
0 |
1 |
34 |
68 |
315 |
5993 |
3780 |
|
Date: 2023-11-13:
| 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 |
16514 |
7121 |
729 |
241 |
194 |
175 |
95 |
0 |
| OW |
0 |
38 |
130 |
124 |
94 |
83 |
31 |
0 |
| VODI |
0 |
14 |
56 |
124 |
147 |
212 |
75 |
0 |
| ODI |
0 |
8 |
7 |
39 |
69 |
211 |
200 |
0 |
| CDI |
0 |
2 |
0 |
11 |
35 |
165 |
480 |
13 |
| VCDI |
0 |
0 |
0 |
0 |
15 |
475 |
6027 |
4205 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
16514 |
7026 |
692 |
243 |
239 |
246 |
153 |
0 |
| OW |
0 |
89 |
135 |
108 |
72 |
75 |
64 |
0 |
| VODI |
0 |
38 |
74 |
122 |
101 |
187 |
151 |
0 |
| ODI |
0 |
27 |
18 |
43 |
74 |
112 |
191 |
0 |
| CDI |
0 |
3 |
3 |
21 |
43 |
166 |
340 |
27 |
| VCDI |
0 |
0 |
0 |
2 |
25 |
535 |
6009 |
4191 |
|
Date: 2023-11-15:
| 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 |
15997 |
7171 |
682 |
301 |
171 |
193 |
114 |
0 |
| OW |
0 |
98 |
126 |
90 |
97 |
48 |
28 |
0 |
| VODI |
0 |
26 |
131 |
102 |
127 |
97 |
67 |
0 |
| ODI |
0 |
3 |
33 |
99 |
107 |
162 |
122 |
0 |
| CDI |
0 |
0 |
5 |
29 |
97 |
180 |
370 |
19 |
| VCDI |
0 |
0 |
1 |
5 |
30 |
203 |
5871 |
5157 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15997 |
7096 |
680 |
305 |
210 |
226 |
185 |
0 |
| OW |
0 |
117 |
99 |
75 |
82 |
65 |
71 |
0 |
| VODI |
0 |
64 |
123 |
112 |
145 |
106 |
162 |
0 |
| ODI |
0 |
13 |
53 |
66 |
67 |
130 |
198 |
6 |
| CDI |
0 |
8 |
21 |
58 |
89 |
147 |
300 |
36 |
| VCDI |
0 |
0 |
2 |
10 |
36 |
209 |
5656 |
5134 |
|
Date: 2023-11-17:
| 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 |
15719 |
7022 |
595 |
354 |
232 |
191 |
134 |
3 |
| OW |
0 |
109 |
119 |
58 |
76 |
73 |
42 |
0 |
| VODI |
0 |
36 |
95 |
92 |
99 |
105 |
67 |
0 |
| ODI |
0 |
1 |
40 |
44 |
85 |
116 |
87 |
5 |
| CDI |
0 |
0 |
17 |
40 |
90 |
260 |
315 |
42 |
| VCDI |
0 |
0 |
6 |
9 |
43 |
236 |
5497 |
6005 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
15719 |
6940 |
613 |
368 |
270 |
258 |
203 |
3 |
| OW |
0 |
157 |
98 |
64 |
73 |
62 |
78 |
0 |
| VODI |
0 |
64 |
83 |
76 |
89 |
139 |
136 |
0 |
| ODI |
0 |
6 |
37 |
38 |
76 |
140 |
188 |
11 |
| CDI |
0 |
1 |
29 |
35 |
63 |
168 |
321 |
59 |
| VCDI |
0 |
0 |
12 |
16 |
54 |
214 |
5216 |
5982 |
|
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