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: 2022-07-21

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-07-25

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 14 1237 3 17 0 0 0 0
OW 0 106 20 77 1 0 0 0
VODI 0 15 5 248 73 0 0 0
ODI 0 6 2 78 1303 210 0 0
CDI 0 0 0 24 2854 14403 2321 0
VCDI 0 0 0 0 0 4011 8869 1005
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14 1131 4 17 0 0 0 0
OW 0 96 9 96 4 0 0 0
VODI 0 74 5 138 145 62 0 0
ODI 0 43 7 95 894 1324 137 0
CDI 0 20 5 98 3035 12674 5821 60
VCDI 0 0 0 0 153 4564 5232 945

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 25 238 8 87 0 0 0 0
OW 0 15 1 31 7 0 0 0
VODI 0 14 0 43 41 0 0 0
ODI 0 20 2 66 323 30 0 0
CDI 0 17 1 51 856 496 1 0
VCDI 0 0 0 4 89 527 140 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 25 197 8 96 0 0 0 0
OW 0 35 1 22 13 0 0 0
VODI 0 23 1 23 34 0 0 0
ODI 0 27 1 7 151 42 0 0
CDI 0 20 1 115 857 468 11 0
VCDI 0 2 0 19 261 543 130 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 0 1120 25 77 0 0 0 0
OW 0 64 26 177 3 0 0 0
VODI 0 11 3 392 124 0 0 0
ODI 0 0 0 60 1407 30 0 0
CDI 0 0 0 0 1390 2622 24 0
VCDI 0 0 0 0 0 1340 1087 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 762 15 69 0 0 0 0
OW 0 189 18 137 7 0 0 0
VODI 0 166 19 391 200 0 0 0
ODI 0 78 2 90 798 37 0 0
CDI 0 0 0 19 1919 2450 1 0
VCDI 0 0 0 0 0 1505 1110 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 1171 2385 11 36 10 0 0 0
OW 0 176 35 116 3 0 0 0
VODI 0 3 6 577 129 0 0 0
ODI 0 0 0 187 687 4 0 0
CDI 0 0 0 0 66 52 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 1171 2335 12 48 11 0 0 0
OW 0 217 35 178 4 0 0 0
VODI 0 12 5 367 95 0 0 0
ODI 0 0 0 230 527 54 0 0
CDI 0 0 0 93 258 2 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 0 953 4 3 0 0 0 0
OW 0 219 34 99 5 0 0 0
VODI 0 117 36 572 75 0 0 0
ODI 0 0 0 36 1603 85 0 0
CDI 0 0 0 0 255 3091 59 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 0 887 13 17 1 0 0 0
OW 0 195 11 123 20 0 0 0
VODI 0 196 47 378 169 0 0 0
ODI 0 11 3 192 1337 750 0 0
CDI 0 0 0 0 411 2426 59 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 856 2356 8 20 0 0 0 0
OW 0 143 21 33 1 0 0 0
VODI 0 22 12 131 37 0 0 0
ODI 0 1 2 47 345 119 0 0
CDI 0 0 0 0 54 532 149 0
VCDI 0 0 0 0 0 12 425 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 852 2023 7 17 0 0 0 0
OW 4 196 4 15 1 0 0 0
VODI 0 222 7 14 0 0 0 0
ODI 0 81 25 158 278 131 56 0
CDI 0 0 0 27 158 532 496 0
VCDI 0 0 0 0 0 0 22 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 3970 1743 15 75 33 0 0 0
OW 1 92 12 46 7 0 0 0
VODI 0 4 1 64 49 0 0 0
ODI 0 0 0 14 117 0 0 0
CDI 0 0 0 0 40 48 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 3970 1512 12 82 37 0 0 0
OW 1 274 9 23 9 0 0 0
VODI 0 51 7 78 29 0 0 0
ODI 0 2 0 14 98 0 0 0
CDI 0 0 0 2 72 48 0 0
VCDI 0 0 0 0 1 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 11235 96 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 11235 96 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 7682 2524 17 133 12 0 0 0
OW 0 61 10 67 23 1 0 0
VODI 0 11 2 169 108 4 0 0
ODI 0 0 0 102 307 23 0 0
CDI 0 0 0 23 161 251 5 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 7682 2506 20 152 36 0 0 0
OW 0 77 6 77 52 2 0 0
VODI 0 13 3 80 115 16 0 0
ODI 0 0 0 102 182 12 0 0
CDI 0 0 0 83 226 232 1 0
VCDI 0 0 0 0 0 17 4 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 12987 1 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 12987 1 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 711 3490 63 219 51 0 0 0
OW 9 48 9 215 32 0 0 0
VODI 0 0 1 312 210 0 0 0
ODI 0 0 0 68 357 2 0 0
CDI 0 0 0 0 3 3 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 708 3473 61 283 68 0 0 0
OW 11 62 8 237 57 0 0 0
VODI 1 3 4 158 330 1 0 0
ODI 0 0 0 93 157 4 0 0
CDI 0 0 0 43 41 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 4589 2987 81 641 33 0 0 0
OW 0 11 6 143 0 0 0 0
VODI 0 0 1 66 8 0 0 0
ODI 0 0 0 4 16 0 0 0
CDI 0 0 0 0 1 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 4589 2969 83 717 33 0 0 0
OW 0 23 1 78 0 0 0 0
VODI 0 6 3 46 6 0 0 0
ODI 0 0 1 12 11 0 0 0
CDI 0 0 0 1 8 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 18727 1219 17 74 1 0 0 0
OW 0 5 7 70 7 0 0 0
VODI 0 0 0 51 31 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 18727 1219 21 105 6 0 0 0
OW 0 5 3 76 15 0 0 0
VODI 0 0 0 14 18 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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