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: 2021-06-03

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-06-07

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 38 6 26 51 22 0 0
OW 0 11 2 16 9 22 0 0
VODI 0 27 2 21 7 30 1 0
ODI 0 24 7 51 26 40 7 0
CDI 0 0 0 75 399 1000 164 0
VCDI 0 0 0 0 604 6467 18158 9589
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 21 4 19 56 48 0 0
OW 0 4 1 2 7 28 0 0
VODI 0 4 3 24 6 37 9 0
ODI 0 35 2 17 1 43 28 0
CDI 0 36 7 126 293 787 451 0
VCDI 0 0 0 1 733 6638 17842 9589

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 8 3 14 4 1 0 0
VODI 0 75 5 26 5 0 0 0
ODI 0 18 2 17 38 4 1 0
CDI 0 4 0 37 51 27 11 0
VCDI 0 0 0 0 15 71 1392 1304
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 1 0 0 0
OW 0 8 3 14 3 1 0 0
VODI 0 71 4 19 4 0 0 0
ODI 0 26 3 21 34 6 8 0
CDI 0 0 0 38 54 25 20 0
VCDI 0 0 0 2 17 71 1376 1304

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 3 9 0 0 0
OW 0 3 3 24 22 6 0 0
VODI 0 14 1 75 43 3 0 0
ODI 0 5 2 49 185 46 1 0
CDI 0 11 3 70 244 589 21 0
VCDI 0 0 0 35 139 1086 5470 1820
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 13 25 1 0 0
OW 0 0 2 23 17 6 0 0
VODI 0 7 1 31 44 37 0 0
ODI 0 8 1 56 138 63 1 0
CDI 0 9 2 36 168 366 42 0
VCDI 0 9 3 97 250 1257 5449 1820

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 294 6 29 7 0 0 0
OW 0 97 1 11 2 0 0 0
VODI 0 62 1 14 2 1 0 0
ODI 0 43 1 38 26 5 0 0
CDI 0 63 3 58 186 218 81 0
VCDI 0 107 10 101 117 208 2655 1207
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 217 5 26 7 0 0 0
OW 0 71 2 4 2 0 0 0
VODI 0 78 0 8 4 0 0 0
ODI 0 74 1 13 9 16 0 0
CDI 0 93 3 84 179 222 171 0
VCDI 0 133 11 116 139 194 2565 1207

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 199 3 14 0 0 0 0
OW 0 48 15 46 1 0 0 0
VODI 0 10 2 78 35 3 0 0
ODI 0 15 1 22 205 23 3 0
CDI 0 39 4 38 1154 540 94 0
VCDI 0 1 0 2 576 2383 1692 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 112 3 6 0 0 0 0
OW 0 47 3 23 1 0 0 0
VODI 0 48 7 39 25 5 0 0
ODI 0 40 3 43 81 16 29 0
CDI 0 64 8 74 823 443 135 0
VCDI 0 1 1 15 1041 2485 1625 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 0 554 21 46 15 0 0 0
OW 0 165 19 80 41 0 0 0
VODI 0 109 15 189 198 6 0 0
ODI 0 68 10 104 796 65 0 0
CDI 0 4 2 18 590 1263 186 0
VCDI 0 0 0 0 6 24 732 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 347 26 61 20 0 0 0
OW 0 153 4 47 62 0 0 0
VODI 0 187 18 110 177 12 0 0
ODI 0 193 11 120 386 118 5 0
CDI 0 20 8 99 970 1169 456 0
VCDI 0 0 0 0 31 59 457 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 0 382 49 155 46 0 0 0
OW 0 78 19 227 81 3 0 0
VODI 0 34 6 298 283 4 0 0
ODI 0 0 0 52 914 183 0 7
CDI 0 0 0 0 322 1078 64 10
VCDI 0 0 0 0 9 221 1315 491
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 396 60 234 141 3 0 0
OW 0 54 5 139 197 29 0 0
VODI 0 42 7 195 331 195 1 4
ODI 0 2 2 138 545 536 18 5
CDI 0 0 0 26 423 511 227 36
VCDI 0 0 0 0 18 215 1133 463

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5361 4379 43 213 0 0 0 0
OW 0 53 8 139 20 0 0 0
VODI 0 10 3 251 129 0 0 0
ODI 0 0 0 84 470 2 0 0
CDI 0 0 0 0 139 27 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 5361 4337 42 267 3 0 0 0
OW 0 52 6 147 31 0 0 0
VODI 0 45 5 149 141 0 0 0
ODI 0 8 1 87 312 11 0 0
CDI 0 0 0 37 271 18 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 5979 2522 37 419 18 0 0 0
OW 0 86 21 329 42 0 0 0
VODI 0 15 13 318 125 4 0 0
ODI 0 1 1 80 385 59 0 0
CDI 0 0 0 64 675 388 8 0
VCDI 0 0 0 0 0 22 85 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5979 2544 42 551 50 0 0 0
OW 0 58 21 330 60 11 0 0
VODI 0 17 6 155 129 23 0 0
ODI 0 5 3 94 184 33 0 0
CDI 0 0 0 80 818 373 48 0
VCDI 0 0 0 0 4 33 45 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 8541 3397 52 293 71 26 0 0
OW 0 6 7 99 27 0 0 0
VODI 0 0 0 45 93 1 0 0
ODI 0 0 0 1 127 25 0 0
CDI 0 0 0 0 14 130 33 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 8541 3403 59 365 107 26 0 0
OW 0 0 0 73 94 1 0 0
VODI 0 0 0 0 129 63 0 0
ODI 0 0 0 0 2 92 27 0
CDI 0 0 0 0 0 0 6 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 18 1036 36 131 16 1 0 0
OW 0 24 12 94 36 3 0 0
VODI 0 8 1 82 152 6 0 0
ODI 0 1 0 45 380 62 2 0
CDI 0 0 0 14 353 1219 124 0
VCDI 0 0 0 0 3 457 1475 12
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 18 948 27 137 22 1 0 0
OW 0 70 11 44 70 8 0 0
VODI 0 32 5 63 132 27 0 0
ODI 0 19 6 53 171 83 9 0
CDI 0 0 0 69 520 1168 275 0
VCDI 0 0 0 0 25 461 1317 12

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 284 41 271 48 5 2 0
OW 0 48 11 237 108 12 4 0
VODI 0 17 4 216 388 31 6 0
ODI 0 1 0 38 726 145 9 0
CDI 0 0 0 10 739 1852 325 0
VCDI 0 0 0 3 117 590 2299 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 307 49 397 120 19 5 0
OW 0 27 3 188 170 23 1 0
VODI 0 16 3 116 315 81 9 0
ODI 0 0 1 46 428 110 63 0
CDI 0 0 0 24 851 1862 1510 0
VCDI 0 0 0 4 242 540 1057 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 15845 3116 64 486 170 11 0 0
OW 0 11 4 163 65 1 0 0
VODI 0 0 0 86 95 9 0 0
ODI 0 0 0 0 43 15 0 0
CDI 0 0 0 0 0 25 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 15845 3093 62 492 236 13 0 0
OW 0 34 6 203 91 18 0 0
VODI 0 0 0 40 46 30 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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