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

Validation of sea ice concentration - GODAE regions

Bulletin date: 2022-08-25

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-08-29

Best estimate

Forecast

Arctic Deep Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 300 3460 9 13 0 0 0 0
OW 0 470 82 172 1 0 0 0
VODI 0 42 42 1561 284 2 0 0
ODI 0 0 0 203 7945 387 0 0
CDI 0 0 0 6 1918 7718 146 10
VCDI 0 0 0 0 0 5378 4375 2378
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 290 2891 7 8 0 0 0 0
OW 10 592 30 66 2 0 0 0
VODI 0 479 89 1145 432 75 0 0
ODI 0 10 7 714 3931 347 7 0
CDI 0 0 0 22 5783 7061 137 27
VCDI 0 0 0 0 0 6002 4377 2361

Queen Elisabeth Islands:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 380 1371 12 53 3 0 0 0
OW 0 61 1 18 0 0 0 0
VODI 0 23 2 56 2 0 0 0
ODI 0 0 0 3 1 13 14 0
CDI 0 2 1 6 41 84 143 0
VCDI 0 0 0 0 12 72 745 14
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 380 1356 12 53 3 0 0 0
OW 0 54 1 20 0 0 0 0
VODI 0 45 2 48 2 0 2 0
ODI 0 0 0 9 1 23 30 0
CDI 0 2 1 5 35 74 211 0
VCDI 0 0 0 1 18 72 659 14

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 533 3157 17 20 0 0 0 0
OW 0 431 38 236 0 0 0 0
VODI 0 272 35 1219 115 2 0 0
ODI 0 0 0 193 1361 30 3 0
CDI 0 0 0 0 489 906 172 0
VCDI 0 0 0 0 0 42 671 40
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 533 2603 11 27 0 0 0 0
OW 0 620 17 166 1 2 0 0
VODI 0 611 52 704 82 20 1 0
ODI 0 26 10 677 699 46 32 0
CDI 0 0 0 94 1183 855 222 0
VCDI 0 0 0 0 0 57 591 40

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4226 1243 4 5 0 0 0 0
OW 0 88 10 19 0 0 0 0
VODI 0 3 5 51 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 4226 1248 7 14 0 0 0 0
OW 0 60 0 10 0 0 0 0
VODI 0 26 12 47 0 0 0 0
ODI 0 0 0 4 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1451 3082 6 16 0 0 0 0
OW 0 528 49 139 0 0 0 0
VODI 0 45 34 912 61 0 0 0
ODI 0 0 0 42 709 16 0 0
CDI 0 0 0 0 19 137 0 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 1451 3023 16 41 0 0 0 0
OW 0 451 26 156 3 0 0 0
VODI 0 181 47 746 213 1 0 0
ODI 0 0 0 166 524 18 0 0
CDI 0 0 0 0 49 134 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1872 2339 4 2 0 0 0 0
OW 0 78 23 65 0 0 0 0
VODI 0 16 8 201 53 0 0 0
ODI 0 0 0 16 614 13 0 0
CDI 0 0 0 0 12 10 0 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 1872 2084 3 2 0 0 0 0
OW 0 196 1 15 0 0 0 0
VODI 0 153 31 169 16 0 0 0
ODI 0 0 0 98 456 17 0 0
CDI 0 0 0 0 207 6 0 0
VCDI 0 0 0 0 0 0 0 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5115 1193 1 5 0 0 0 0
OW 0 5 0 10 0 0 0 0
VODI 0 0 0 2 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 5115 1180 1 1 0 0 0 0
OW 0 15 0 5 0 0 0 0
VODI 0 3 0 11 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11320 11 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 11320 11 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8340 1855 15 108 7 0 0 0
OW 0 41 8 84 17 0 0 0
VODI 0 7 5 118 54 1 0 0
ODI 0 0 0 41 395 50 0 0
CDI 0 0 0 5 173 372 0 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 8340 1856 19 158 9 0 0 0
OW 0 41 4 72 26 0 0 0
VODI 0 6 5 101 80 3 0 0
ODI 0 0 0 15 199 81 0 0
CDI 0 0 0 10 332 339 0 0
VCDI 0 0 0 0 0 0 0 0

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12484 502 0 2 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 12484 502 0 2 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5254 441 12 51 17 0 0 0
OW 0 6 5 9 3 0 0 0
VODI 0 0 0 5 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 5254 433 11 48 17 0 0 0
OW 0 13 4 6 3 0 0 0
VODI 0 1 2 11 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7868 712 6 1 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 7868 712 6 1 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 20095 110 2 2 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 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 20095 110 2 2 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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