Validation of sea ice concentration - American sector
Bulletin date: 2023-05-25
Data source: OSI SAF N.H. AMSR sea ice concentration
Model vs. observations, sea ice class contingency tables
Date: 2023-05-19:
| 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 |
226 |
14 |
24 |
1 |
0 |
0 |
0 |
| OW |
0 |
263 |
66 |
99 |
43 |
2 |
0 |
0 |
| VODI |
0 |
239 |
110 |
238 |
213 |
102 |
25 |
0 |
| ODI |
0 |
78 |
60 |
221 |
303 |
232 |
155 |
0 |
| CDI |
0 |
78 |
46 |
187 |
292 |
613 |
1157 |
0 |
| VCDI |
0 |
22 |
14 |
105 |
455 |
3614 |
24550 |
12019 |
|
...date precedes bulletin
|
Date: 2023-05-21:
| 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 |
221 |
16 |
10 |
0 |
0 |
0 |
0 |
| OW |
0 |
378 |
63 |
112 |
80 |
3 |
3 |
0 |
| VODI |
0 |
288 |
121 |
246 |
249 |
113 |
46 |
0 |
| ODI |
0 |
82 |
53 |
256 |
297 |
316 |
118 |
0 |
| CDI |
0 |
87 |
52 |
190 |
311 |
688 |
913 |
3 |
| VCDI |
0 |
11 |
14 |
117 |
466 |
3577 |
24209 |
12157 |
|
...date precedes bulletin
|
Date: 2023-05-23:
| 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 |
748 |
94 |
119 |
13 |
3 |
0 |
0 |
| OW |
0 |
261 |
124 |
190 |
59 |
4 |
1 |
0 |
| VODI |
0 |
150 |
99 |
296 |
300 |
44 |
20 |
0 |
| ODI |
0 |
60 |
51 |
160 |
401 |
258 |
48 |
0 |
| CDI |
0 |
34 |
40 |
165 |
306 |
698 |
659 |
40 |
| VCDI |
0 |
10 |
6 |
74 |
513 |
2590 |
23101 |
14127 |
|
...date precedes bulletin
|
Date: 2023-05-25:
| 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 |
0 |
851 |
139 |
98 |
9 |
1 |
2 |
0 |
| OW |
0 |
301 |
142 |
207 |
82 |
10 |
5 |
0 |
| VODI |
0 |
202 |
105 |
329 |
341 |
49 |
13 |
0 |
| ODI |
0 |
137 |
55 |
216 |
357 |
166 |
48 |
0 |
| CDI |
0 |
129 |
98 |
344 |
715 |
670 |
389 |
0 |
| VCDI |
0 |
132 |
34 |
242 |
1397 |
2325 |
21682 |
13844 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
867 |
163 |
126 |
16 |
2 |
2 |
0 |
| OW |
0 |
302 |
117 |
183 |
94 |
7 |
5 |
0 |
| VODI |
0 |
181 |
105 |
327 |
313 |
43 |
9 |
0 |
| ODI |
0 |
135 |
52 |
211 |
332 |
140 |
28 |
0 |
| CDI |
0 |
130 |
97 |
328 |
729 |
717 |
375 |
0 |
| VCDI |
0 |
137 |
39 |
261 |
1417 |
2312 |
21720 |
13844 |
|
Date: 2023-05-27:
| 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 |
0 |
895 |
128 |
107 |
21 |
5 |
2 |
0 |
| OW |
0 |
342 |
136 |
244 |
122 |
31 |
1 |
0 |
| VODI |
0 |
184 |
87 |
324 |
366 |
135 |
31 |
0 |
| ODI |
0 |
102 |
53 |
159 |
341 |
236 |
104 |
0 |
| CDI |
0 |
154 |
59 |
229 |
470 |
1216 |
782 |
0 |
| VCDI |
0 |
297 |
65 |
293 |
814 |
2599 |
21247 |
13485 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
917 |
173 |
177 |
43 |
7 |
2 |
0 |
| OW |
0 |
300 |
87 |
206 |
136 |
40 |
0 |
0 |
| VODI |
0 |
186 |
89 |
294 |
308 |
122 |
22 |
0 |
| ODI |
0 |
100 |
53 |
158 |
320 |
207 |
77 |
0 |
| CDI |
0 |
150 |
54 |
211 |
503 |
1371 |
724 |
0 |
| VCDI |
0 |
321 |
72 |
310 |
824 |
2475 |
21342 |
13485 |
|
Date: 2023-05-29:
| 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 |
0 |
1016 |
129 |
149 |
58 |
6 |
1 |
0 |
| OW |
0 |
339 |
141 |
254 |
88 |
13 |
0 |
0 |
| VODI |
0 |
256 |
120 |
491 |
495 |
58 |
22 |
0 |
| ODI |
0 |
269 |
69 |
225 |
590 |
309 |
48 |
0 |
| CDI |
0 |
1087 |
193 |
744 |
1517 |
2032 |
490 |
0 |
| VCDI |
0 |
69 |
19 |
85 |
297 |
1997 |
27186 |
5004 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
849 |
149 |
225 |
107 |
13 |
0 |
0 |
| OW |
0 |
320 |
93 |
248 |
172 |
27 |
1 |
0 |
| VODI |
0 |
199 |
80 |
299 |
316 |
95 |
28 |
0 |
| ODI |
0 |
230 |
66 |
188 |
345 |
199 |
121 |
0 |
| CDI |
0 |
672 |
127 |
458 |
1037 |
1466 |
543 |
0 |
| VCDI |
0 |
766 |
156 |
530 |
1068 |
2615 |
27054 |
5004 |
|
Date: 2023-05-31:
| 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 |
1166 |
251 |
338 |
80 |
5 |
0 |
0 |
| OW |
0 |
229 |
126 |
391 |
328 |
86 |
3 |
0 |
| VODI |
0 |
124 |
53 |
237 |
459 |
436 |
68 |
0 |
| ODI |
0 |
70 |
47 |
143 |
261 |
555 |
330 |
0 |
| CDI |
0 |
124 |
57 |
173 |
568 |
1959 |
2579 |
0 |
| VCDI |
0 |
11 |
19 |
108 |
317 |
2728 |
26599 |
4838 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
905 |
189 |
299 |
147 |
32 |
0 |
0 |
| OW |
0 |
236 |
95 |
273 |
243 |
42 |
8 |
0 |
| VODI |
0 |
175 |
60 |
205 |
338 |
240 |
34 |
0 |
| ODI |
0 |
114 |
52 |
171 |
250 |
428 |
217 |
0 |
| CDI |
0 |
149 |
90 |
251 |
593 |
1651 |
2249 |
3 |
| VCDI |
0 |
145 |
67 |
191 |
442 |
3376 |
27071 |
4835 |
|
Date: 2023-06-02:
| 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 |
1554 |
250 |
449 |
192 |
51 |
5 |
0 |
| OW |
0 |
212 |
66 |
323 |
434 |
216 |
46 |
0 |
| VODI |
0 |
131 |
66 |
147 |
313 |
325 |
206 |
0 |
| ODI |
0 |
65 |
40 |
145 |
209 |
455 |
608 |
0 |
| CDI |
0 |
77 |
22 |
179 |
465 |
1475 |
3184 |
0 |
| VCDI |
0 |
29 |
29 |
181 |
275 |
3025 |
24939 |
5478 |
|
|
observations |
|
Ice free |
Ice free
near MIZ |
OW |
VODI |
ODI |
CDI |
VCDI
near MIZ |
VCDI |
m
o
d
e
l |
Ice free |
0 |
1077 |
184 |
385 |
196 |
47 |
1 |
0 |
| OW |
0 |
301 |
73 |
217 |
246 |
67 |
5 |
0 |
| VODI |
0 |
257 |
37 |
167 |
315 |
292 |
89 |
0 |
| ODI |
0 |
171 |
48 |
131 |
248 |
335 |
465 |
0 |
| CDI |
0 |
165 |
67 |
234 |
411 |
1498 |
3315 |
7 |
| VCDI |
0 |
97 |
64 |
290 |
472 |
3308 |
25113 |
5471 |
|
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