Validation of sea ice concentration - American sector
Bulletin date: 2024-03-21
Data source: OSI SAF N.H. multi-product sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2024-03-15:
| 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 |
4143 |
2736 |
10 |
12 |
2 |
0 |
0 |
0 |
| OW |
0 |
413 |
82 |
63 |
19 |
0 |
0 |
0 |
| VODI |
0 |
39 |
66 |
357 |
86 |
7 |
0 |
0 |
| ODI |
0 |
0 |
0 |
113 |
459 |
61 |
1 |
0 |
| CDI |
0 |
0 |
0 |
0 |
235 |
583 |
116 |
27 |
| VCDI |
0 |
0 |
0 |
0 |
216 |
2092 |
8497 |
40796 |
|
...date precedes bulletin
|
Date: 2024-03-17:
| 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 |
3975 |
2681 |
13 |
17 |
2 |
0 |
0 |
0 |
| OW |
0 |
437 |
73 |
66 |
23 |
2 |
0 |
0 |
| VODI |
0 |
40 |
85 |
376 |
67 |
16 |
0 |
0 |
| ODI |
0 |
0 |
0 |
118 |
482 |
124 |
1 |
0 |
| CDI |
0 |
0 |
0 |
5 |
249 |
749 |
112 |
1 |
| VCDI |
0 |
0 |
0 |
0 |
239 |
2349 |
10282 |
38647 |
|
...date precedes bulletin
|
Date: 2024-03-19:
| 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 |
4086 |
2734 |
9 |
17 |
13 |
0 |
0 |
0 |
| OW |
0 |
438 |
46 |
77 |
26 |
0 |
0 |
0 |
| VODI |
0 |
85 |
57 |
330 |
132 |
0 |
0 |
0 |
| ODI |
0 |
0 |
0 |
104 |
399 |
71 |
0 |
0 |
| CDI |
0 |
0 |
0 |
3 |
402 |
752 |
49 |
15 |
| VCDI |
0 |
0 |
0 |
0 |
438 |
1559 |
9148 |
40241 |
|
...date precedes bulletin
|
Date: 2024-03-21:
| 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 |
4773 |
2493 |
5 |
11 |
8 |
0 |
0 |
0 |
| OW |
0 |
493 |
59 |
80 |
30 |
0 |
0 |
0 |
| VODI |
0 |
211 |
81 |
196 |
82 |
13 |
0 |
0 |
| ODI |
0 |
17 |
27 |
210 |
161 |
95 |
2 |
1 |
| CDI |
0 |
3 |
1 |
94 |
383 |
471 |
108 |
32 |
| VCDI |
0 |
0 |
0 |
25 |
784 |
2411 |
10406 |
37465 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4773 |
2527 |
4 |
13 |
13 |
0 |
0 |
0 |
| OW |
0 |
484 |
57 |
70 |
26 |
1 |
0 |
0 |
| VODI |
0 |
184 |
83 |
216 |
65 |
10 |
1 |
0 |
| ODI |
0 |
19 |
28 |
213 |
184 |
96 |
1 |
1 |
| CDI |
0 |
3 |
1 |
84 |
382 |
479 |
110 |
34 |
| VCDI |
0 |
0 |
0 |
20 |
778 |
2404 |
10404 |
37463 |
|
Date: 2024-03-23:
| 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 |
4907 |
2439 |
3 |
11 |
0 |
0 |
0 |
0 |
| OW |
0 |
530 |
81 |
38 |
18 |
0 |
0 |
0 |
| VODI |
0 |
212 |
76 |
241 |
73 |
3 |
2 |
0 |
| ODI |
0 |
66 |
25 |
147 |
170 |
87 |
18 |
1 |
| CDI |
0 |
54 |
14 |
99 |
393 |
507 |
388 |
17 |
| VCDI |
0 |
0 |
2 |
11 |
460 |
1975 |
10956 |
37207 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4907 |
2485 |
3 |
7 |
7 |
0 |
0 |
0 |
| OW |
0 |
503 |
73 |
52 |
18 |
0 |
0 |
0 |
| VODI |
0 |
208 |
98 |
223 |
55 |
1 |
1 |
0 |
| ODI |
0 |
63 |
15 |
175 |
171 |
77 |
20 |
1 |
| CDI |
0 |
42 |
11 |
80 |
396 |
507 |
323 |
19 |
| VCDI |
0 |
0 |
1 |
10 |
467 |
1987 |
11020 |
37205 |
|
Date: 2024-03-25:
| 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 |
4412 |
2689 |
1 |
9 |
0 |
0 |
0 |
0 |
| OW |
0 |
625 |
105 |
78 |
13 |
0 |
0 |
0 |
| VODI |
0 |
61 |
69 |
490 |
183 |
5 |
0 |
0 |
| ODI |
0 |
5 |
1 |
46 |
521 |
101 |
0 |
0 |
| CDI |
0 |
0 |
0 |
4 |
275 |
1306 |
91 |
5 |
| VCDI |
0 |
0 |
0 |
0 |
49 |
2395 |
10597 |
37095 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4412 |
2640 |
5 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
523 |
96 |
107 |
28 |
0 |
0 |
0 |
| VODI |
0 |
134 |
48 |
366 |
143 |
14 |
0 |
0 |
| ODI |
0 |
64 |
21 |
89 |
383 |
155 |
2 |
0 |
| CDI |
0 |
19 |
6 |
61 |
357 |
804 |
105 |
4 |
| VCDI |
0 |
0 |
0 |
4 |
130 |
2834 |
10581 |
37096 |
|
Date: 2024-03-27:
| 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 |
4372 |
2535 |
6 |
5 |
0 |
0 |
0 |
0 |
| OW |
0 |
601 |
102 |
214 |
36 |
0 |
0 |
0 |
| VODI |
0 |
49 |
73 |
412 |
280 |
18 |
0 |
0 |
| ODI |
0 |
2 |
0 |
15 |
369 |
343 |
2 |
0 |
| CDI |
0 |
0 |
0 |
0 |
54 |
761 |
352 |
7 |
| VCDI |
0 |
0 |
0 |
0 |
79 |
3037 |
13962 |
33545 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4372 |
2382 |
10 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
567 |
67 |
111 |
53 |
5 |
0 |
0 |
| VODI |
0 |
216 |
75 |
301 |
132 |
22 |
0 |
0 |
| ODI |
0 |
21 |
29 |
191 |
314 |
199 |
0 |
0 |
| CDI |
0 |
1 |
0 |
43 |
212 |
626 |
263 |
19 |
| VCDI |
0 |
0 |
0 |
0 |
107 |
3307 |
14053 |
33533 |
|
Date: 2024-03-29:
| 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 |
4508 |
2502 |
12 |
0 |
0 |
0 |
0 |
0 |
| OW |
0 |
669 |
102 |
180 |
48 |
0 |
0 |
0 |
| VODI |
0 |
96 |
88 |
414 |
231 |
5 |
0 |
0 |
| ODI |
0 |
1 |
3 |
77 |
476 |
238 |
3 |
0 |
| CDI |
0 |
0 |
0 |
0 |
229 |
685 |
279 |
17 |
| VCDI |
0 |
0 |
0 |
0 |
290 |
3469 |
14559 |
32050 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
4508 |
2062 |
15 |
18 |
7 |
0 |
0 |
0 |
| OW |
0 |
566 |
39 |
102 |
80 |
0 |
0 |
0 |
| VODI |
0 |
430 |
65 |
193 |
152 |
16 |
0 |
0 |
| ODI |
0 |
197 |
61 |
190 |
230 |
200 |
3 |
0 |
| CDI |
0 |
13 |
25 |
168 |
314 |
524 |
183 |
27 |
| VCDI |
0 |
0 |
0 |
0 |
491 |
3657 |
14655 |
32040 |
|
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