Validation of sea ice concentration - American sector
Bulletin date: 2023-11-23
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
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 |
7809 |
3072 |
52 |
68 |
39 |
1 |
0 |
0 |
| OW |
50 |
251 |
69 |
226 |
290 |
38 |
0 |
0 |
| VODI |
1 |
62 |
36 |
183 |
511 |
101 |
20 |
0 |
| ODI |
0 |
24 |
9 |
49 |
574 |
292 |
7 |
0 |
| CDI |
0 |
18 |
14 |
43 |
567 |
1233 |
137 |
2 |
| VCDI |
0 |
36 |
17 |
86 |
386 |
3336 |
9426 |
16731 |
|
...date precedes bulletin
|
Date: 2023-11-19:
| 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 |
7061 |
3224 |
69 |
40 |
17 |
8 |
0 |
0 |
| OW |
51 |
442 |
88 |
117 |
149 |
63 |
0 |
0 |
| VODI |
2 |
90 |
50 |
216 |
306 |
302 |
58 |
0 |
| ODI |
0 |
31 |
7 |
71 |
326 |
392 |
105 |
0 |
| CDI |
0 |
28 |
6 |
71 |
394 |
864 |
269 |
0 |
| VCDI |
0 |
18 |
21 |
86 |
283 |
2417 |
8768 |
19356 |
|
...date precedes bulletin
|
Date: 2023-11-21:
| 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 |
7403 |
2991 |
51 |
1 |
0 |
0 |
0 |
0 |
| OW |
68 |
521 |
46 |
16 |
2 |
0 |
0 |
0 |
| VODI |
0 |
245 |
77 |
157 |
107 |
19 |
11 |
0 |
| ODI |
0 |
76 |
48 |
119 |
353 |
144 |
0 |
0 |
| CDI |
0 |
13 |
24 |
91 |
402 |
729 |
80 |
0 |
| VCDI |
0 |
1 |
6 |
99 |
424 |
3213 |
9122 |
19207 |
|
...date precedes bulletin
|
Date: 2023-11-23:
| 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 |
5261 |
4850 |
104 |
37 |
0 |
0 |
0 |
0 |
| OW |
7 |
487 |
129 |
114 |
18 |
0 |
0 |
0 |
| VODI |
1 |
223 |
50 |
133 |
171 |
52 |
10 |
0 |
| ODI |
0 |
74 |
44 |
71 |
166 |
148 |
6 |
0 |
| CDI |
0 |
28 |
23 |
97 |
269 |
550 |
40 |
0 |
| VCDI |
0 |
0 |
1 |
42 |
408 |
3836 |
10095 |
18321 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5258 |
4857 |
101 |
39 |
1 |
0 |
0 |
0 |
| OW |
11 |
462 |
131 |
100 |
18 |
4 |
0 |
0 |
| VODI |
0 |
236 |
51 |
136 |
142 |
62 |
8 |
0 |
| ODI |
0 |
74 |
45 |
81 |
192 |
115 |
6 |
0 |
| CDI |
0 |
33 |
22 |
97 |
271 |
547 |
42 |
0 |
| VCDI |
0 |
0 |
1 |
41 |
408 |
3858 |
10095 |
18321 |
|
Date: 2023-11-25:
| 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 |
5320 |
4511 |
47 |
62 |
4 |
0 |
0 |
0 |
| OW |
40 |
510 |
98 |
143 |
26 |
9 |
0 |
0 |
| VODI |
7 |
192 |
55 |
158 |
157 |
57 |
0 |
0 |
| ODI |
0 |
84 |
21 |
63 |
153 |
146 |
11 |
0 |
| CDI |
0 |
43 |
33 |
76 |
146 |
632 |
76 |
1 |
| VCDI |
0 |
3 |
11 |
48 |
249 |
2812 |
8836 |
21026 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
5325 |
4488 |
46 |
74 |
6 |
0 |
0 |
0 |
| OW |
34 |
494 |
101 |
124 |
27 |
14 |
0 |
0 |
| VODI |
8 |
236 |
48 |
154 |
133 |
59 |
0 |
0 |
| ODI |
0 |
82 |
29 |
76 |
156 |
120 |
10 |
0 |
| CDI |
0 |
38 |
31 |
68 |
157 |
611 |
92 |
1 |
| VCDI |
0 |
5 |
10 |
54 |
256 |
2852 |
8821 |
21026 |
|
Date: 2023-11-27:
| 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 |
4577 |
4965 |
53 |
52 |
0 |
0 |
0 |
0 |
| OW |
12 |
707 |
95 |
86 |
14 |
0 |
0 |
0 |
| VODI |
2 |
199 |
110 |
288 |
162 |
15 |
0 |
0 |
| ODI |
0 |
22 |
15 |
58 |
295 |
185 |
1 |
0 |
| CDI |
0 |
11 |
15 |
45 |
119 |
763 |
79 |
0 |
| VCDI |
0 |
1 |
9 |
50 |
191 |
2796 |
9415 |
20459 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4584 |
4897 |
65 |
75 |
1 |
0 |
0 |
0 |
| OW |
3 |
572 |
91 |
148 |
68 |
5 |
0 |
0 |
| VODI |
4 |
253 |
65 |
141 |
208 |
74 |
0 |
0 |
| ODI |
0 |
82 |
31 |
69 |
150 |
135 |
1 |
0 |
| CDI |
0 |
70 |
13 |
47 |
103 |
523 |
82 |
0 |
| VCDI |
0 |
31 |
32 |
99 |
251 |
3022 |
9412 |
20459 |
|
Date: 2023-11-29:
| 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 |
3839 |
4883 |
154 |
171 |
45 |
0 |
0 |
0 |
| OW |
18 |
508 |
109 |
220 |
153 |
57 |
0 |
0 |
| VODI |
1 |
134 |
65 |
212 |
195 |
220 |
6 |
0 |
| ODI |
0 |
50 |
9 |
67 |
113 |
260 |
12 |
0 |
| CDI |
0 |
13 |
14 |
46 |
131 |
635 |
123 |
0 |
| VCDI |
0 |
0 |
3 |
20 |
237 |
2219 |
12923 |
18001 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
3785 |
4470 |
143 |
191 |
96 |
37 |
0 |
0 |
| OW |
59 |
724 |
75 |
151 |
136 |
223 |
2 |
0 |
| VODI |
14 |
255 |
79 |
189 |
104 |
228 |
5 |
0 |
| ODI |
0 |
76 |
28 |
103 |
132 |
177 |
11 |
0 |
| CDI |
0 |
36 |
13 |
53 |
112 |
357 |
89 |
2 |
| VCDI |
0 |
27 |
16 |
49 |
294 |
2369 |
12957 |
17999 |
|
Date: 2023-12-01:
| 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 |
2797 |
4544 |
213 |
316 |
23 |
1 |
0 |
0 |
| OW |
74 |
573 |
258 |
555 |
220 |
60 |
3 |
0 |
| VODI |
4 |
187 |
73 |
187 |
262 |
288 |
48 |
0 |
| ODI |
0 |
74 |
20 |
92 |
131 |
310 |
45 |
0 |
| CDI |
0 |
42 |
23 |
68 |
173 |
641 |
266 |
1 |
| VCDI |
0 |
0 |
11 |
84 |
370 |
2605 |
13786 |
16438 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
2663 |
4259 |
238 |
396 |
79 |
15 |
5 |
0 |
| OW |
158 |
509 |
150 |
431 |
157 |
156 |
38 |
0 |
| VODI |
48 |
341 |
98 |
150 |
219 |
319 |
31 |
0 |
| ODI |
6 |
152 |
55 |
95 |
120 |
205 |
43 |
0 |
| CDI |
0 |
104 |
19 |
117 |
158 |
525 |
302 |
4 |
| VCDI |
0 |
55 |
38 |
113 |
446 |
2685 |
13729 |
16435 |
|
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