Validation of sea ice concentration - American sector
Bulletin date: 2022-12-15
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2022-12-09:
| 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 |
0 |
519 |
250 |
97 |
199 |
84 |
0 |
0 |
| OW |
0 |
160 |
314 |
380 |
572 |
204 |
0 |
0 |
| VODI |
0 |
92 |
38 |
248 |
873 |
730 |
72 |
0 |
| ODI |
0 |
54 |
21 |
99 |
637 |
893 |
140 |
0 |
| CDI |
0 |
9 |
11 |
31 |
170 |
1064 |
394 |
1 |
| VCDI |
0 |
2 |
1 |
7 |
228 |
3464 |
18154 |
15654 |
|
...date precedes bulletin
|
Date: 2022-12-11:
| 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 |
0 |
381 |
213 |
43 |
110 |
56 |
0 |
0 |
| OW |
0 |
228 |
189 |
375 |
458 |
136 |
0 |
0 |
| VODI |
0 |
120 |
58 |
373 |
751 |
431 |
13 |
0 |
| ODI |
0 |
55 |
31 |
130 |
948 |
595 |
46 |
0 |
| CDI |
0 |
13 |
39 |
127 |
782 |
964 |
320 |
0 |
| VCDI |
0 |
5 |
5 |
26 |
562 |
3223 |
19166 |
14894 |
|
...date precedes bulletin
|
Date: 2022-12-13:
| 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 |
0 |
325 |
60 |
122 |
37 |
0 |
0 |
0 |
| OW |
0 |
105 |
31 |
158 |
118 |
13 |
0 |
0 |
| VODI |
0 |
88 |
23 |
182 |
375 |
224 |
2 |
0 |
| ODI |
0 |
26 |
17 |
113 |
1080 |
883 |
11 |
0 |
| CDI |
0 |
10 |
1 |
36 |
1176 |
1612 |
135 |
14 |
| VCDI |
0 |
3 |
3 |
35 |
466 |
4284 |
18412 |
15686 |
|
...date precedes bulletin
|
Date: 2022-12-15:
| 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 |
0 |
226 |
102 |
56 |
4 |
0 |
0 |
0 |
| OW |
0 |
130 |
80 |
153 |
93 |
28 |
7 |
0 |
| VODI |
0 |
83 |
58 |
166 |
257 |
262 |
25 |
0 |
| ODI |
0 |
38 |
60 |
175 |
696 |
541 |
36 |
0 |
| CDI |
0 |
9 |
8 |
117 |
712 |
1248 |
44 |
0 |
| VCDI |
0 |
4 |
6 |
72 |
788 |
4846 |
15206 |
19530 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
210 |
112 |
99 |
22 |
2 |
0 |
0 |
| OW |
0 |
151 |
71 |
116 |
100 |
60 |
13 |
0 |
| VODI |
0 |
91 |
65 |
181 |
285 |
297 |
28 |
0 |
| ODI |
0 |
23 |
52 |
167 |
709 |
607 |
26 |
0 |
| CDI |
0 |
11 |
7 |
99 |
600 |
1056 |
37 |
1 |
| VCDI |
0 |
4 |
7 |
77 |
834 |
4903 |
15214 |
19529 |
|
Date: 2022-12-17:
| 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 |
0 |
114 |
31 |
27 |
8 |
0 |
0 |
0 |
| OW |
0 |
164 |
96 |
121 |
158 |
26 |
0 |
0 |
| VODI |
0 |
47 |
75 |
253 |
208 |
214 |
65 |
0 |
| ODI |
0 |
61 |
77 |
212 |
391 |
331 |
231 |
0 |
| CDI |
0 |
3 |
36 |
108 |
443 |
657 |
523 |
0 |
| VCDI |
0 |
0 |
13 |
56 |
422 |
5166 |
15092 |
20437 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
96 |
53 |
61 |
34 |
1 |
0 |
0 |
| OW |
0 |
177 |
61 |
90 |
125 |
35 |
2 |
0 |
| VODI |
0 |
49 |
85 |
247 |
229 |
234 |
111 |
0 |
| ODI |
0 |
61 |
75 |
225 |
433 |
379 |
237 |
0 |
| CDI |
0 |
6 |
43 |
102 |
360 |
578 |
498 |
0 |
| VCDI |
0 |
0 |
11 |
52 |
449 |
5167 |
15063 |
20437 |
|
Date: 2022-12-19:
| 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 |
0 |
29 |
10 |
29 |
2 |
0 |
0 |
0 |
| OW |
0 |
38 |
65 |
84 |
24 |
2 |
0 |
0 |
| VODI |
0 |
35 |
154 |
395 |
252 |
70 |
0 |
0 |
| ODI |
0 |
4 |
4 |
209 |
643 |
332 |
22 |
0 |
| CDI |
0 |
1 |
2 |
39 |
237 |
818 |
310 |
0 |
| VCDI |
0 |
0 |
0 |
22 |
143 |
5105 |
14296 |
22490 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
36 |
16 |
31 |
18 |
0 |
0 |
0 |
| OW |
0 |
31 |
47 |
105 |
75 |
34 |
6 |
0 |
| VODI |
0 |
28 |
115 |
213 |
297 |
208 |
71 |
0 |
| ODI |
0 |
9 |
19 |
195 |
371 |
367 |
137 |
0 |
| CDI |
0 |
3 |
36 |
163 |
335 |
933 |
288 |
0 |
| VCDI |
0 |
0 |
2 |
71 |
205 |
4785 |
14126 |
22490 |
|
Date: 2022-12-21:
| 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 |
0 |
19 |
5 |
23 |
4 |
0 |
0 |
0 |
| OW |
0 |
7 |
36 |
85 |
17 |
3 |
0 |
0 |
| VODI |
0 |
49 |
94 |
164 |
263 |
35 |
0 |
0 |
| ODI |
0 |
18 |
42 |
130 |
700 |
357 |
34 |
0 |
| CDI |
0 |
7 |
7 |
21 |
305 |
692 |
285 |
4 |
| VCDI |
0 |
0 |
6 |
27 |
244 |
3438 |
14975 |
23770 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
16 |
5 |
20 |
9 |
1 |
0 |
0 |
| OW |
0 |
8 |
29 |
91 |
40 |
7 |
6 |
0 |
| VODI |
0 |
44 |
105 |
150 |
286 |
182 |
51 |
0 |
| ODI |
0 |
14 |
7 |
95 |
502 |
306 |
208 |
56 |
| CDI |
0 |
17 |
35 |
53 |
359 |
502 |
523 |
162 |
| VCDI |
0 |
1 |
9 |
41 |
337 |
3527 |
14506 |
23556 |
|
Date: 2022-12-23:
| 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 |
0 |
10 |
6 |
1 |
0 |
0 |
0 |
0 |
| OW |
0 |
11 |
12 |
47 |
37 |
2 |
0 |
0 |
| VODI |
0 |
12 |
27 |
93 |
91 |
24 |
5 |
0 |
| ODI |
0 |
16 |
22 |
148 |
347 |
250 |
24 |
0 |
| CDI |
0 |
6 |
3 |
61 |
396 |
816 |
208 |
0 |
| VCDI |
0 |
1 |
1 |
22 |
209 |
2474 |
16069 |
24415 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
7 |
3 |
4 |
2 |
0 |
0 |
0 |
| OW |
0 |
8 |
11 |
55 |
48 |
6 |
0 |
0 |
| VODI |
0 |
28 |
40 |
113 |
136 |
73 |
49 |
0 |
| ODI |
0 |
12 |
17 |
125 |
253 |
352 |
271 |
0 |
| CDI |
0 |
1 |
0 |
34 |
358 |
632 |
572 |
1 |
| VCDI |
0 |
0 |
0 |
41 |
283 |
2503 |
15414 |
24414 |
|
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