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: 2023-06-15

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-06-19

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 5 1 8 0 0 0 0
OW 0 1 2 17 2 0 0 0
VODI 0 0 1 20 16 0 0 0
ODI 0 0 0 7 60 14 3 0
CDI 0 0 0 0 83 541 117 0
VCDI 0 0 0 0 2 2113 19148 14741
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2 1 12 0 0 0 0
OW 0 3 0 9 4 0 0 0
VODI 0 1 3 15 18 2 0 0
ODI 0 0 0 16 39 16 9 0
CDI 0 0 0 0 93 707 1574 139
VCDI 0 0 0 0 9 1943 17685 14602

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 35 0 94 0 0 0 0
OW 0 9 0 47 7 10 0 0
VODI 0 1 1 21 48 0 0 0
ODI 0 0 1 4 75 2 3 0
CDI 0 0 0 7 171 95 12 0
VCDI 0 0 0 0 961 417 538 574
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 28 0 106 8 6 0 0
OW 0 11 0 47 92 4 0 0
VODI 0 6 1 6 13 0 1 0
ODI 0 0 0 6 11 2 9 0
CDI 0 0 1 8 67 29 13 0
VCDI 0 0 0 0 1071 483 530 574

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 232 15 128 81 0 0 0
OW 0 41 21 31 32 0 0 0
VODI 0 23 40 53 59 0 0 0
ODI 0 3 8 119 230 10 0 0
CDI 0 0 0 23 267 1382 9 0
VCDI 0 0 0 0 0 1482 4560 1133
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 123 8 145 109 0 0 0
OW 0 38 3 13 46 0 0 0
VODI 0 53 10 14 54 0 0 0
ODI 0 54 21 26 68 8 0 0
CDI 0 31 42 136 353 516 11 0
VCDI 0 0 0 20 39 2350 4558 1133

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1 634 49 7 0 0 0 0
OW 1 29 39 74 0 0 0 0
VODI 0 0 1 117 35 0 0 0
ODI 0 0 0 15 148 11 0 0
CDI 0 0 0 0 221 1724 177 0
VCDI 0 0 0 0 0 1246 1125 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1 588 46 27 0 0 0 0
OW 1 59 12 38 5 0 0 0
VODI 0 16 26 58 32 0 0 0
ODI 0 0 5 61 92 6 0 0
CDI 0 0 0 29 275 871 159 0
VCDI 0 0 0 0 0 2104 1143 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 74 15 14 0 0 0 0
OW 0 10 22 38 1 0 0 0
VODI 0 3 5 93 164 1 0 0
ODI 0 0 1 55 492 21 1 0
CDI 0 0 0 17 537 1376 152 0
VCDI 0 0 0 0 0 117 3596 441
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 35 6 25 1 0 0 0
OW 0 26 10 9 8 0 0 0
VODI 0 19 17 42 110 1 1 0
ODI 0 7 6 65 170 22 20 0
CDI 0 0 4 76 879 1096 665 18
VCDI 0 0 0 0 26 396 3063 423

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 194 49 79 13 0 0 0
OW 0 21 54 144 27 3 0 0
VODI 0 1 15 342 193 15 0 0
ODI 0 0 0 117 814 136 0 0
CDI 0 0 0 2 752 886 15 0
VCDI 0 0 0 0 37 101 1221 95
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 121 42 89 11 0 0 0
OW 0 38 20 106 28 7 0 0
VODI 0 51 31 146 142 33 0 0
ODI 0 6 25 253 397 70 0 0
CDI 0 0 0 90 1172 913 258 18
VCDI 0 0 0 0 86 118 978 77

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 41 1390 170 218 16 0 0 0
OW 0 16 34 255 47 0 0 0
VODI 0 0 2 268 250 13 0 0
ODI 0 0 0 40 698 96 0 0
CDI 0 0 0 13 679 1466 43 0
VCDI 0 0 0 0 26 248 302 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 41 1314 118 274 57 0 0 0
OW 0 64 28 182 80 9 0 0
VODI 0 27 43 139 209 38 0 0
ODI 0 1 17 145 424 152 0 0
CDI 0 0 0 54 797 755 30 0
VCDI 0 0 0 0 149 869 315 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 8171 2532 71 121 6 0 0 0
OW 0 5 40 100 8 0 0 0
VODI 0 0 0 111 37 0 0 0
ODI 0 0 0 6 109 0 0 0
CDI 0 0 0 0 14 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 8171 2516 63 133 4 0 0 0
OW 0 20 40 110 19 0 0 0
VODI 0 1 8 74 47 0 0 0
ODI 0 0 0 21 71 0 0 0
CDI 0 0 0 0 33 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 5244 2509 179 477 56 0 0 0
OW 0 0 12 210 47 0 0 0
VODI 0 0 0 336 167 0 0 0
ODI 0 0 0 18 673 15 3 0
CDI 0 0 0 10 310 958 31 0
VCDI 0 0 0 0 0 25 416 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5244 2503 181 572 121 0 0 0
OW 0 6 10 273 53 0 0 0
VODI 0 0 0 183 278 0 0 0
ODI 0 0 0 13 364 22 3 0
CDI 0 0 0 10 437 976 247 0
VCDI 0 0 0 0 0 0 200 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 7563 3464 265 807 42 0 0 0
OW 0 0 2 411 42 0 0 0
VODI 0 0 0 214 118 0 0 0
ODI 0 0 0 8 47 0 0 0
CDI 0 0 0 0 5 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 7563 3464 267 1208 68 0 0 0
OW 0 0 0 178 68 0 0 0
VODI 0 0 0 54 96 0 0 0
ODI 0 0 0 0 22 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 0 1205 223 422 48 0 0 0
OW 0 1 10 262 73 0 0 0
VODI 0 0 0 211 364 3 3 0
ODI 0 0 0 1 962 147 5 0
CDI 0 0 0 0 257 1446 105 0
VCDI 0 0 0 0 0 1 54 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1190 206 515 106 0 0 0
OW 0 16 25 228 237 1 0 0
VODI 0 0 2 142 531 93 6 0
ODI 0 0 0 11 485 401 42 0
CDI 0 0 0 0 345 1101 115 0
VCDI 0 0 0 0 0 1 4 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 61 2781 280 965 724 0 0 0
OW 0 5 17 380 354 0 0 0
VODI 0 0 0 357 906 1 0 0
ODI 0 0 0 10 1195 13 6 0
CDI 0 0 0 0 31 104 34 0
VCDI 0 0 0 0 0 55 308 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 61 2781 281 1138 1027 0 0 0
OW 0 5 16 361 629 6 0 0
VODI 0 0 0 194 978 16 0 0
ODI 0 0 0 19 514 15 23 0
CDI 0 0 0 0 53 76 48 0
VCDI 0 0 0 0 9 60 277 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 14019 3459 249 983 126 0 0 0
OW 0 0 1 378 197 0 0 0
VODI 0 0 0 270 356 0 0 0
ODI 0 0 0 3 168 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 14019 3459 250 1284 315 0 0 0
OW 0 0 0 264 251 0 0 0
VODI 0 0 0 86 192 0 0 0
ODI 0 0 0 0 89 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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