Validation of sea ice concentration
Bulletin date: 2023-01-26
Model vs. observations, sea ice class contingency tables
Date: 2023-01-20:
| 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 |
14256 |
6141 |
993 |
275 |
58 |
9 |
1 |
0 |
| OW |
0 |
194 |
226 |
139 |
75 |
23 |
1 |
0 |
| VODI |
0 |
102 |
215 |
209 |
170 |
123 |
24 |
0 |
| ODI |
0 |
48 |
84 |
146 |
168 |
159 |
95 |
2 |
| CDI |
0 |
43 |
74 |
112 |
164 |
160 |
234 |
9 |
| VCDI |
0 |
73 |
169 |
250 |
450 |
888 |
7033 |
4564 |
|
...date precedes bulletin
|
Date: 2023-01-24:
| 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 |
14853 |
6535 |
932 |
254 |
41 |
21 |
6 |
0 |
| OW |
0 |
174 |
141 |
178 |
50 |
35 |
12 |
0 |
| VODI |
0 |
139 |
102 |
303 |
154 |
117 |
17 |
0 |
| ODI |
0 |
85 |
69 |
182 |
101 |
109 |
63 |
0 |
| CDI |
0 |
62 |
69 |
247 |
174 |
162 |
358 |
2 |
| VCDI |
0 |
119 |
153 |
295 |
342 |
708 |
6962 |
3833 |
|
...date precedes bulletin
|
Date: 2023-01-26:
| 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 |
14078 |
6528 |
1069 |
461 |
100 |
56 |
11 |
0 |
| OW |
0 |
74 |
167 |
142 |
106 |
94 |
5 |
0 |
| VODI |
0 |
105 |
112 |
215 |
204 |
249 |
29 |
0 |
| ODI |
0 |
38 |
58 |
122 |
200 |
235 |
105 |
0 |
| CDI |
0 |
18 |
41 |
108 |
199 |
292 |
269 |
14 |
| VCDI |
0 |
57 |
116 |
144 |
462 |
973 |
6641 |
4262 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14078 |
6525 |
1070 |
471 |
107 |
51 |
9 |
0 |
| OW |
0 |
65 |
152 |
119 |
88 |
96 |
7 |
0 |
| VODI |
0 |
84 |
105 |
219 |
217 |
229 |
27 |
0 |
| ODI |
0 |
63 |
63 |
124 |
195 |
238 |
100 |
0 |
| CDI |
0 |
33 |
50 |
105 |
188 |
282 |
261 |
23 |
| VCDI |
0 |
50 |
123 |
154 |
476 |
1003 |
6656 |
4253 |
|
Date: 2023-01-30:
| 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 |
13931 |
6617 |
1130 |
353 |
75 |
12 |
0 |
0 |
| OW |
0 |
41 |
250 |
171 |
73 |
38 |
4 |
0 |
| VODI |
0 |
41 |
178 |
179 |
150 |
127 |
16 |
0 |
| ODI |
0 |
18 |
89 |
158 |
217 |
346 |
103 |
0 |
| CDI |
0 |
13 |
53 |
74 |
252 |
362 |
298 |
22 |
| VCDI |
0 |
2 |
41 |
64 |
260 |
823 |
7360 |
4218 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13931 |
6516 |
1076 |
288 |
68 |
18 |
1 |
0 |
| OW |
0 |
63 |
214 |
139 |
60 |
39 |
8 |
0 |
| VODI |
0 |
51 |
147 |
159 |
86 |
99 |
33 |
0 |
| ODI |
0 |
38 |
71 |
95 |
126 |
192 |
144 |
1 |
| CDI |
0 |
22 |
85 |
87 |
161 |
273 |
204 |
34 |
| VCDI |
0 |
42 |
148 |
231 |
526 |
1087 |
7391 |
4205 |
|
Date: 2023-02-01:
| 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 |
13934 |
6695 |
807 |
385 |
51 |
9 |
0 |
0 |
| OW |
0 |
73 |
205 |
208 |
59 |
27 |
3 |
0 |
| VODI |
0 |
51 |
130 |
186 |
148 |
115 |
10 |
0 |
| ODI |
0 |
24 |
81 |
137 |
143 |
189 |
69 |
3 |
| CDI |
0 |
18 |
94 |
125 |
155 |
237 |
310 |
14 |
| VCDI |
0 |
8 |
68 |
177 |
465 |
900 |
8175 |
3671 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13934 |
6569 |
769 |
333 |
56 |
30 |
0 |
0 |
| OW |
0 |
113 |
167 |
155 |
51 |
23 |
3 |
0 |
| VODI |
0 |
78 |
137 |
196 |
90 |
80 |
15 |
0 |
| ODI |
0 |
45 |
88 |
144 |
130 |
163 |
115 |
3 |
| CDI |
0 |
32 |
80 |
112 |
133 |
177 |
259 |
13 |
| VCDI |
0 |
32 |
144 |
278 |
561 |
1004 |
8175 |
3672 |
|
Date: 2023-02-03:
| 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 |
13856 |
6557 |
702 |
475 |
96 |
18 |
1 |
0 |
| OW |
0 |
87 |
208 |
190 |
83 |
44 |
2 |
0 |
| VODI |
0 |
69 |
124 |
192 |
140 |
108 |
13 |
0 |
| ODI |
0 |
31 |
73 |
129 |
124 |
129 |
47 |
0 |
| CDI |
0 |
22 |
57 |
123 |
150 |
193 |
258 |
0 |
| VCDI |
0 |
3 |
54 |
272 |
408 |
1093 |
8156 |
3872 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13856 |
6444 |
719 |
441 |
130 |
85 |
1 |
0 |
| OW |
0 |
133 |
151 |
167 |
64 |
58 |
1 |
0 |
| VODI |
0 |
88 |
128 |
193 |
140 |
88 |
14 |
0 |
| ODI |
0 |
66 |
93 |
155 |
138 |
124 |
85 |
0 |
| CDI |
0 |
31 |
63 |
114 |
114 |
190 |
234 |
4 |
| VCDI |
0 |
7 |
64 |
311 |
415 |
1040 |
8142 |
3868 |
|
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