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: 2024-02-22

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: 2024-02-26

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 0 1 0 25 1 0 0 0
OW 0 3 11 55 14 0 0 0
VODI 0 0 2 39 32 3 0 0
ODI 0 0 0 12 44 12 0 0
CDI 0 0 0 22 102 360 134 0
VCDI 0 0 0 0 15 319 4747 30949
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 0 15 0 0 0 0
OW 0 3 3 48 9 0 0 0
VODI 0 0 8 28 22 2 0 0
ODI 0 0 2 23 37 21 0 0
CDI 0 0 0 39 135 385 454 10
VCDI 0 0 0 0 5 286 4427 30939

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 0 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 7 237 2875
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 7 237 2875

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 33 9945
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 33 9945

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 0 111 1383 4159
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 0 111 1383 4159

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 7224
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 7224

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 11 1 0
VCDI 0 0 0 0 4 324 2167 2792
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 11 1 0
VCDI 0 0 0 0 4 324 2167 2792

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 90 0 0 0 0 0 0
OW 0 155 4 1 0 0 0 0
VODI 0 69 2 6 0 0 0 0
ODI 0 57 6 3 7 1 0 0
CDI 0 69 32 100 51 25 0 0
VCDI 0 2 10 75 301 1193 4058 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 31 0 0 0 0 0 0
OW 0 86 0 0 0 0 0 0
VODI 0 60 4 1 0 0 0 0
ODI 0 46 2 10 6 6 0 0
CDI 0 112 8 21 33 24 0 0
VCDI 0 107 40 153 320 1189 4058 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 3434 3818 21 5 0 0 0 0
OW 0 455 123 59 2 0 0 0
VODI 0 57 66 334 47 0 0 0
ODI 0 19 6 161 235 6 0 0
CDI 0 34 10 92 438 676 52 0
VCDI 0 2 2 74 260 454 380 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3434 3696 27 21 1 0 0 0
OW 0 370 57 44 5 0 0 0
VODI 0 181 76 137 30 1 0 0
ODI 0 60 31 198 68 15 0 0
CDI 0 43 25 180 500 453 76 0
VCDI 0 35 12 145 378 667 356 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 4426 3030 38 26 0 0 0 0
OW 8 341 107 142 22 0 0 0
VODI 0 10 31 202 77 0 0 0
ODI 0 0 3 64 86 10 0 0
CDI 0 0 0 25 203 288 32 0
VCDI 0 0 0 0 33 795 1479 218
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4434 2887 26 18 0 0 0 0
OW 0 306 69 82 4 0 0 0
VODI 0 153 44 133 42 0 0 0
ODI 0 34 27 100 63 1 0 0
CDI 0 1 13 122 236 212 38 0
VCDI 0 0 0 4 76 880 1473 218

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7417 3072 119 163 26 0 0 0
OW 0 136 31 112 104 3 0 0
VODI 0 22 28 47 113 46 0 0
ODI 0 6 16 43 73 58 0 0
CDI 0 0 5 102 114 228 0 0
VCDI 0 0 0 8 60 449 386 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7417 2986 110 163 35 0 0 0
OW 0 113 28 95 95 25 0 0
VODI 0 76 5 50 107 68 0 0
ODI 0 48 26 25 66 39 0 0
CDI 0 13 30 101 72 142 2 0
VCDI 0 0 0 41 115 510 384 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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 2 0 0 0
ODI 0 0 0 4 42 17 0 0
CDI 0 0 0 7 46 169 50 0
VCDI 0 0 0 0 105 400 3047 1914
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 5 15 10 0 0
CDI 0 0 0 6 74 192 91 0
VCDI 0 0 0 0 106 384 3006 1914

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 4 0 0
VCDI 0 0 0 0 0 770 4313 3451
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 6 0 0
VCDI 0 0 0 0 0 768 4313 3451

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6272 4380 99 143 7 0 0 0
OW 8 235 77 179 9 0 0 0
VODI 0 13 20 275 167 0 0 0
ODI 0 1 4 97 337 69 0 0
CDI 0 0 0 1 333 940 142 0
VCDI 0 0 0 0 0 884 1054 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6280 4244 116 168 7 0 0 0
OW 0 281 36 210 32 0 0 0
VODI 0 78 26 157 186 14 0 0
ODI 0 24 20 111 265 210 1 0
CDI 0 2 2 49 349 653 201 0
VCDI 0 0 0 0 14 1016 994 0


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