Validation of sea ice concentration
Bulletin date: 2023-01-19
Model vs. observations, sea ice class contingency tables
Date: 2023-01-13:
| 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 |
14984 |
6074 |
560 |
177 |
39 |
4 |
2 |
0 |
| OW |
0 |
275 |
244 |
124 |
45 |
14 |
7 |
0 |
| VODI |
0 |
149 |
248 |
231 |
94 |
24 |
13 |
0 |
| ODI |
0 |
37 |
88 |
176 |
126 |
91 |
80 |
0 |
| CDI |
0 |
24 |
60 |
140 |
143 |
139 |
216 |
65 |
| VCDI |
0 |
10 |
90 |
228 |
407 |
642 |
7359 |
4730 |
|
...date precedes bulletin
|
Date: 2023-01-17:
| 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 |
14447 |
6333 |
755 |
240 |
48 |
22 |
9 |
0 |
| OW |
0 |
127 |
252 |
148 |
45 |
23 |
4 |
0 |
| VODI |
0 |
84 |
216 |
218 |
118 |
116 |
13 |
0 |
| ODI |
0 |
35 |
102 |
133 |
135 |
172 |
79 |
9 |
| CDI |
0 |
20 |
96 |
109 |
173 |
192 |
169 |
73 |
| VCDI |
0 |
7 |
205 |
186 |
292 |
1015 |
6991 |
4748 |
|
...date precedes bulletin
|
Date: 2023-01-19:
| 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 |
14241 |
6248 |
871 |
292 |
58 |
25 |
0 |
0 |
| OW |
0 |
172 |
225 |
137 |
65 |
39 |
4 |
0 |
| VODI |
0 |
88 |
196 |
179 |
151 |
138 |
20 |
0 |
| ODI |
0 |
39 |
106 |
108 |
174 |
158 |
94 |
6 |
| CDI |
0 |
38 |
70 |
90 |
180 |
165 |
192 |
21 |
| VCDI |
0 |
50 |
140 |
190 |
519 |
900 |
6949 |
4821 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14241 |
6274 |
911 |
316 |
61 |
27 |
1 |
0 |
| OW |
0 |
141 |
177 |
118 |
56 |
29 |
2 |
0 |
| VODI |
0 |
109 |
181 |
161 |
139 |
116 |
15 |
0 |
| ODI |
0 |
33 |
130 |
106 |
186 |
170 |
85 |
6 |
| CDI |
0 |
36 |
72 |
99 |
193 |
174 |
200 |
21 |
| VCDI |
0 |
42 |
137 |
196 |
512 |
909 |
6956 |
4821 |
|
Date: 2023-01-23:
| 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 |
14595 |
6391 |
1253 |
221 |
46 |
17 |
7 |
0 |
| OW |
0 |
125 |
267 |
160 |
46 |
16 |
1 |
0 |
| VODI |
0 |
73 |
173 |
308 |
186 |
144 |
24 |
0 |
| ODI |
0 |
41 |
103 |
164 |
181 |
114 |
28 |
0 |
| CDI |
0 |
25 |
87 |
184 |
199 |
189 |
206 |
63 |
| VCDI |
0 |
59 |
157 |
275 |
292 |
772 |
7019 |
3948 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14595 |
6020 |
978 |
157 |
42 |
15 |
4 |
0 |
| OW |
0 |
215 |
263 |
122 |
42 |
6 |
3 |
0 |
| VODI |
0 |
172 |
263 |
204 |
121 |
68 |
17 |
0 |
| ODI |
0 |
108 |
133 |
212 |
140 |
126 |
46 |
17 |
| CDI |
0 |
83 |
142 |
173 |
187 |
161 |
227 |
76 |
| VCDI |
0 |
116 |
261 |
444 |
418 |
876 |
6988 |
3918 |
|
Date: 2023-01-25:
| 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 |
14388 |
6605 |
974 |
369 |
98 |
25 |
8 |
0 |
| OW |
0 |
127 |
124 |
189 |
101 |
55 |
3 |
0 |
| VODI |
0 |
145 |
108 |
209 |
265 |
183 |
9 |
0 |
| ODI |
0 |
60 |
66 |
119 |
188 |
152 |
60 |
0 |
| CDI |
0 |
41 |
53 |
131 |
256 |
221 |
301 |
23 |
| VCDI |
0 |
94 |
177 |
188 |
456 |
944 |
6548 |
4096 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
14388 |
6187 |
703 |
214 |
46 |
15 |
1 |
0 |
| OW |
0 |
271 |
179 |
110 |
44 |
47 |
8 |
0 |
| VODI |
0 |
226 |
173 |
207 |
166 |
102 |
21 |
0 |
| ODI |
0 |
121 |
130 |
175 |
180 |
150 |
85 |
0 |
| CDI |
0 |
124 |
92 |
179 |
277 |
213 |
250 |
18 |
| VCDI |
0 |
143 |
225 |
320 |
651 |
1053 |
6564 |
4101 |
|
Date: 2023-01-27:
| 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 |
13954 |
6514 |
1150 |
332 |
119 |
96 |
10 |
0 |
| OW |
0 |
43 |
169 |
155 |
84 |
116 |
6 |
0 |
| VODI |
0 |
51 |
131 |
167 |
189 |
232 |
21 |
0 |
| ODI |
0 |
58 |
92 |
122 |
182 |
253 |
96 |
0 |
| CDI |
0 |
24 |
40 |
107 |
150 |
282 |
352 |
3 |
| VCDI |
0 |
42 |
74 |
119 |
256 |
1112 |
7131 |
4125 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
13954 |
6290 |
820 |
173 |
58 |
50 |
7 |
0 |
| OW |
0 |
100 |
228 |
113 |
31 |
55 |
10 |
0 |
| VODI |
0 |
96 |
185 |
153 |
110 |
71 |
61 |
0 |
| ODI |
0 |
59 |
125 |
121 |
156 |
164 |
126 |
0 |
| CDI |
0 |
76 |
117 |
140 |
152 |
323 |
273 |
0 |
| VCDI |
0 |
111 |
181 |
302 |
473 |
1428 |
7139 |
4128 |
|
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