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: 2023-09-14

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-11-13

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 1809 3774 1 0 0 0 0 0
OW 0 940 508 187 0 0 0 0
VODI 0 0 36 2225 189 0 0 0
ODI 0 0 0 155 4277 115 0 0
CDI 0 0 0 0 837 10988 142 0
VCDI 0 0 0 0 0 2979 7649 91
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1809 3106 10 0 0 0 0 0
OW 0 1489 352 366 11 0 0 0
VODI 0 119 183 2051 881 41 0 0
ODI 0 0 0 150 3706 3985 115 0
CDI 0 0 0 0 705 7691 1809 0
VCDI 0 0 0 0 0 2365 5867 91

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 1294 525 3 0 0 0 0 0
OW 11 117 26 29 3 0 0 0
VODI 0 11 3 44 9 1 0 0
ODI 0 0 0 9 19 18 0 0
CDI 0 0 0 4 32 160 55 0
VCDI 0 0 0 1 1 69 675 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1300 446 5 0 0 0 0 0
OW 5 153 16 39 10 0 0 0
VODI 0 46 10 31 4 2 0 0
ODI 0 8 1 10 17 26 4 0
CDI 0 0 0 5 31 149 222 0
VCDI 0 0 0 2 2 71 504 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4700 2184 1 0 0 0 0 0
OW 0 481 175 95 0 0 0 0
VODI 0 1 13 771 60 0 0 0
ODI 0 0 0 133 694 12 0 0
CDI 0 0 0 0 73 470 16 0
VCDI 0 0 0 0 0 8 91 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4700 1954 13 1 0 0 0 0
OW 0 559 95 171 0 0 0 0
VODI 0 153 76 457 76 1 0 0
ODI 0 0 5 254 383 37 0 0
CDI 0 0 0 116 368 384 15 0
VCDI 0 0 0 0 0 68 92 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5653 0 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 5653 0 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

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6223 596 0 0 0 0 0 0
OW 0 95 33 7 0 0 0 0
VODI 0 0 4 129 6 0 0 0
ODI 0 0 0 4 127 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 6223 528 0 0 0 0 0 0
OW 0 132 12 17 0 0 0 0
VODI 0 31 25 123 78 0 0 0
ODI 0 0 0 0 55 0 0 0
CDI 0 0 0 0 0 0 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 1474 1250 0 0 0 0 0 0
OW 0 283 100 29 0 0 0 0
VODI 0 0 21 360 31 0 0 0
ODI 0 0 0 19 854 45 0 0
CDI 0 0 0 0 98 735 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 1474 1148 3 0 0 0 0 0
OW 0 312 44 20 0 0 0 0
VODI 0 73 73 314 58 0 0 0
ODI 0 0 1 74 735 29 0 0
CDI 0 0 0 0 190 751 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 4824 1266 2 0 0 0 0 0
OW 0 99 25 24 0 0 0 0
VODI 0 0 0 58 6 0 0 0
ODI 0 0 0 3 10 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 4824 1176 9 11 0 0 0 0
OW 0 178 17 33 0 0 0 0
VODI 0 11 1 40 12 0 0 0
ODI 0 0 0 1 4 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 11156 166 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 11156 166 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 6784 2851 34 124 0 0 0 0
OW 0 272 92 161 1 0 0 0
VODI 0 1 5 363 137 0 0 0
ODI 0 0 0 13 477 15 0 0
CDI 0 0 0 0 130 193 10 0
VCDI 0 0 0 0 0 31 2 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6784 2721 27 153 0 0 0 0
OW 0 401 93 268 64 0 0 0
VODI 0 2 11 233 255 7 0 0
ODI 0 0 0 7 375 94 12 0
CDI 0 0 0 0 51 138 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 12842 145 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 12842 145 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5570 125 0 0 0 0 0 0
OW 0 13 2 0 0 0 0 0
VODI 0 1 0 1 11 0 0 0
ODI 0 0 0 0 26 9 0 0
CDI 0 0 0 0 6 39 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 5560 119 0 0 0 0 0 0
OW 10 19 2 0 0 0 0 0
VODI 0 1 0 1 32 38 0 0
ODI 0 0 0 0 11 10 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 8538 0 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 8538 0 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

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15740 0 6 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 15740 0 6 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


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