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

Validation of sea ice concentration - Full domain

Reference date: 2025-01-16

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-01-10:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 73448 15279 504 458 9 0 0 0
OW 0 332 176 574 357 36 0 0
VODI 0 233 128 684 374 367 105 0
ODI 0 23 38 482 833 323 253 0
CDI 0 0 2 196 1331 1823 1417 21
VCDI 0 0 0 4 444 3382 19509 63882

Date: 2025-01-12:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 76061 12588 409 324 15 0 0 0
OW 17 366 205 438 104 2 0 0
VODI 0 395 147 686 300 151 32 0
ODI 0 107 77 681 777 93 160 0
CDI 0 16 1 284 1953 2007 1002 39
VCDI 0 0 0 5 390 3219 20789 63187

Date: 2025-01-14:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 75343 13140 398 386 32 1 0 0
OW 27 353 149 335 80 5 0 0
VODI 10 429 231 636 222 62 0 0
ODI 0 61 59 819 874 198 48 0
CDI 0 0 0 124 1519 2445 1183 18
VCDI 0 0 0 9 230 3092 26540 57969

Date: 2025-01-16:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 73991 14137 415 394 14 0 0 0
OW 31 331 137 361 102 6 0 0
VODI 26 309 185 592 206 29 0 0
ODI 7 136 129 787 819 171 13 0
CDI 0 0 0 138 1399 1789 810 12
VCDI 0 0 0 0 168 2713 22561 64109

Date: 2025-01-18:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 72258 15276 495 505 19 0 0 0
OW 54 286 118 439 116 0 0 0
VODI 68 290 124 580 278 12 0 0
ODI 24 147 67 820 828 147 1 0
CDI 0 1 2 143 1315 1734 478 9
VCDI 0 0 0 0 183 3437 23612 63161

Date: 2025-01-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 73215 13890 401 360 22 0 0 0
OW 113 296 94 386 151 1 0 0
VODI 83 406 172 484 269 12 0 0
ODI 8 181 86 679 858 143 2 0
CDI 0 13 17 237 1086 1804 435 9
VCDI 0 0 0 86 449 4026 24843 61710

Date: 2025-01-22:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 72252 14195 414 348 4 0 0 0
OW 41 326 114 368 82 0 0 0
VODI 33 328 130 575 234 38 0 0
ODI 45 299 71 392 892 298 0 0
CDI 2 90 18 231 1072 1737 538 5
VCDI 0 1 0 67 507 3871 25731 61678

Date: 2025-01-24:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71397 14701 349 247 3 0 0 0
OW 10 385 157 306 30 0 0 0
VODI 3 340 204 615 219 13 0 0
ODI 4 433 87 674 912 211 6 0
CDI 0 187 5 205 934 1664 903 15
VCDI 0 0 0 24 346 3404 24673 63361


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