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

Validation of sea ice concentration - European sector

Reference date: 2025-01-30

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

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 71400 14318 329 248 3 0 0 0
OW 9 364 150 286 30 0 0 0
VODI 3 281 186 570 206 12 0 0
ODI 4 435 88 622 813 195 7 0
CDI 0 190 5 200 748 1265 719 5
VCDI 0 0 0 29 84 808 7610 6871

Date: 2025-01-26:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 69546 16019 385 240 9 0 0 0
OW 9 469 178 262 53 0 0 0
VODI 0 391 185 719 194 13 0 0
ODI 0 458 75 716 899 187 16 0
CDI 0 2 0 94 815 1824 525 0
VCDI 0 0 0 1 43 946 7739 6081

Date: 2025-01-28:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 70949 15143 281 212 9 0 0 0
OW 9 460 159 236 48 0 0 0
VODI 3 468 218 646 135 24 0 0
ODI 0 501 150 935 679 86 31 0
CDI 0 0 5 176 1023 1288 358 0
VCDI 0 0 0 0 67 1251 7415 6128

Date: 2025-01-30:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71684 14648 222 171 0 0 0 0
OW 16 534 143 222 21 0 0 0
VODI 7 563 212 446 142 7 0 0
ODI 0 568 252 854 576 33 0 0
CDI 0 37 50 464 1205 1238 247 0
VCDI 0 0 0 4 144 1668 8158 4557

Date: 2025-02-01:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71070 15281 225 148 3 0 0 0
OW 9 617 147 255 28 0 0 0
VODI 1 614 282 673 152 0 0 0
ODI 0 255 204 983 756 83 1 0
CDI 0 63 28 366 1297 1556 226 0
VCDI 0 0 0 16 157 2178 6876 4543

Date: 2025-02-03:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71665 14898 265 186 2 0 0 0
OW 3 666 124 268 37 0 0 0
VODI 0 545 266 668 195 11 0 0
ODI 0 192 149 1030 896 242 5 0
CDI 0 3 10 367 1553 2259 320 0
VCDI 0 0 0 5 401 1864 5958 4040

Date: 2025-02-05:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 69767 16183 439 549 24 0 0 0
OW 9 742 153 345 76 0 0 0
VODI 2 752 281 705 229 32 0 0
ODI 0 126 109 853 1084 409 31 0
CDI 0 17 22 194 1513 1963 636 0
VCDI 0 0 0 9 307 1647 6245 3640

Date: 2025-02-07:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 69593 15810 394 607 71 0 0 0
OW 25 778 127 427 226 4 0 0
VODI 5 701 223 602 334 55 10 0
ODI 0 197 136 847 982 242 39 0
CDI 0 11 23 202 1350 2361 325 2
VCDI 0 0 0 0 166 1820 5642 4756


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