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

Validation of sea ice concentration - American sector

Reference date: 2023-12-14

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2023-12-08:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2069 3846 459 428 3 0 0 0
OW 48 363 45 612 129 0 0 0
VODI 29 697 90 421 401 41 0 0
ODI 8 41 42 245 316 334 5 0
CDI 0 0 0 31 282 1008 236 0
VCDI 0 0 0 0 44 1445 7628 24520

Date: 2023-12-10:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1418 3397 370 662 35 0 0 0
OW 131 327 43 499 465 0 0 0
VODI 69 282 32 155 461 253 0 0
ODI 2 37 38 227 537 391 8 0
CDI 0 0 0 22 312 1043 558 3
VCDI 0 0 0 0 47 1193 6131 26718

Date: 2023-12-12:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 799 2427 509 1136 161 0 0 0
OW 94 146 12 236 525 29 0 0
VODI 48 110 3 152 361 333 0 0
ODI 53 114 18 153 251 521 82 0
CDI 0 21 20 239 376 957 417 0
VCDI 0 0 0 4 319 1824 6637 26779

Date: 2023-12-14:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 398 1842 346 651 37 0 0 0
OW 45 197 24 731 481 6 0 0
VODI 27 156 8 140 496 113 0 0
ODI 8 256 27 178 292 392 0 0
CDI 0 4 8 186 588 1283 328 0
VCDI 0 0 0 8 428 2353 5836 27993

Date: 2023-12-16:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 43 1653 202 353 0 0 0 0
OW 36 177 24 642 364 4 0 0
VODI 30 210 8 145 627 315 5 0
ODI 12 152 5 102 238 272 8 0
CDI 0 83 37 215 578 1206 375 2
VCDI 0 0 0 4 282 2445 5617 29395

Date: 2023-12-18:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 185 1159 105 343 13 0 0 0
OW 1 173 14 356 315 14 0 0
VODI 1 182 31 176 279 571 0 0
ODI 0 55 12 230 158 499 4 0
CDI 0 0 0 211 497 938 310 2
VCDI 0 0 0 22 196 3180 6356 29278

Date: 2023-12-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95 850 148 263 58 0 0 0
OW 4 117 11 116 301 7 0 0
VODI 3 168 18 91 253 387 1 0
ODI 1 117 1 108 269 588 42 0
CDI 0 0 0 28 453 694 673 1
VCDI 0 0 0 0 95 2707 7915 29283

Date: 2023-12-22:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56 672 83 144 0 0 0 0
OW 9 85 13 205 99 0 0 0
VODI 6 117 9 112 396 47 0 0
ODI 0 234 27 142 438 196 0 0
CDI 0 0 1 96 943 791 315 1
VCDI 0 0 0 1 122 1997 6675 31834


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