Description of algorithm
Full domain
American sector
European sector
Asian sector
  Ice concntr, edge pos
  Contingency tables

Validation of sea ice concentration - Asian sector

Bulletin date: 2025-07-31

Data source: OSI SAF N.H. AMSR sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2025-07-25:

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 3654 5891 50 6 5 0 0 0
OW 19 2995 480 439 53 1 0 0
VODI 0 371 331 1398 880 4 0 0
ODI 0 0 13 329 2804 608 0 0
CDI 0 0 0 0 2548 9199 0 0
VCDI 0 0 0 0 0 4 0 0
...date precedes bulletin

Date: 2025-07-27:

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 4561 5633 30 12 0 0 0 0
OW 197 2906 427 467 41 0 0 0
VODI 0 513 317 1181 1023 18 0 0
ODI 0 15 25 327 2426 779 0 0
CDI 0 0 0 0 2756 8272 0 0
VCDI 0 0 0 0 1 155 0 0
...date precedes bulletin

Date: 2025-07-29:

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 5012 6923 59 26 1 0 0 0
OW 2 2193 585 375 20 3 0 0
VODI 0 30 186 1431 608 1 0 0
ODI 0 0 1 153 3694 1340 0 0
CDI 0 0 0 0 1413 7961 65 0
VCDI 0 0 0 0 0 0 0 0
...date precedes bulletin

Date: 2025-07-31:

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 5064 7105 77 20 0 0 0 0
OW 0 2139 442 358 27 3 0 0
VODI 0 135 241 1394 553 11 0 0
ODI 0 3 4 238 3736 3258 0 0
CDI 0 0 0 6 1458 5614 196 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 5063 7135 96 28 0 0 0 0
OW 1 2111 424 409 28 3 0 0
VODI 0 134 243 1317 590 19 0 0
ODI 0 2 1 256 3563 3256 0 0
CDI 0 0 0 6 1593 5608 196 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-02:

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 5850 6212 65 18 1 0 0 0
OW 115 2132 403 284 25 0 0 0
VODI 0 282 301 1425 553 33 0 0
ODI 0 3 11 365 3131 5157 45 0
CDI 0 0 0 31 1123 4344 173 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 5853 6282 85 20 1 0 0 0
OW 112 2075 412 363 24 0 0 0
VODI 0 271 277 1378 665 49 0 0
ODI 0 1 6 331 2952 4680 79 0
CDI 0 0 0 31 1191 4805 139 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-04:

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 6579 6671 35 11 3 0 0 0
OW 24 1831 588 307 5 0 0 0
VODI 0 13 95 1343 411 0 0 0
ODI 0 0 0 197 3318 445 0 0
CDI 0 0 0 5 1484 8212 36 0
VCDI 0 0 0 0 0 188 281 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6525 5657 30 11 1 0 0 0
OW 78 2296 314 278 21 0 0 0
VODI 0 540 352 1116 778 80 0 0
ODI 0 22 22 400 3115 4840 213 0
CDI 0 0 0 58 1306 3925 104 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-06:

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 6683 6656 44 12 2 1 0 0
OW 16 1783 436 345 21 0 0 0
VODI 0 114 198 1090 500 37 5 0
ODI 0 0 6 281 2125 1383 518 0
CDI 0 0 0 34 1741 7469 399 0
VCDI 0 0 0 0 0 161 22 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6640 5464 33 16 2 1 0 0
OW 59 2423 276 287 58 0 0 0
VODI 0 640 330 1012 787 168 0 0
ODI 0 26 41 362 2686 5459 254 0
CDI 0 0 4 85 856 3423 690 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-08:

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 6939 6521 28 8 3 0 0 0
OW 2 1896 327 305 26 0 0 0
VODI 0 270 273 1076 448 7 0 0
ODI 0 9 16 364 2514 1248 2 0
CDI 0 0 6 100 2128 6970 569 0
VCDI 0 0 0 0 0 1 26 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6880 5273 40 23 3 0 0 0
OW 61 2484 236 324 74 0 0 0
VODI 0 874 295 953 729 130 0 0
ODI 0 65 68 418 2824 5039 415 0
CDI 0 0 11 135 1489 3057 182 0
VCDI 0 0 0 0 0 0 0 0


Generated by /metno/routine/sms/V3/SIconcentrationValidation5/SICamsr2webPage5sector.sh Fri Aug 15 02:14:08 UTC 2025 on arcval2

 
See Met Privacy