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: 2020-06-18

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-06-22

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 2 18 13 13 0 0
OW 0 0 0 3 26 8 1 0
VODI 0 5 2 25 75 9 3 0
ODI 0 3 2 16 273 47 6 0
CDI 0 0 0 34 180 2878 619 0
VCDI 0 0 0 0 144 4949 17757 9786
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 5 2 20 32 18 1 0
OW 0 0 0 6 58 13 3 0
VODI 0 2 2 13 99 53 6 0
ODI 0 6 1 15 144 474 99 0
CDI 0 0 1 42 224 2077 2219 9
VCDI 0 0 0 0 154 5269 16058 9777

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 28 2 171 24 0 0 0
OW 0 11 1 7 11 0 0 0
VODI 0 7 0 6 23 0 0 0
ODI 0 7 1 2 62 2 0 0
CDI 0 1 1 3 317 6 0 0
VCDI 0 0 0 14 1410 881 135 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 28 2 174 35 0 0 0
OW 0 10 1 4 18 0 0 0
VODI 0 8 0 4 28 2 0 0
ODI 0 7 1 5 32 2 0 0
CDI 0 0 1 0 120 1 0 0
VCDI 0 1 0 16 1614 884 135 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 0 379 44 279 27 0 0 0
OW 0 4 1 72 40 0 0 0
VODI 0 0 0 39 106 4 0 0
ODI 0 0 0 34 233 46 0 0
CDI 0 0 0 32 257 1696 0 0
VCDI 0 0 0 0 9 3110 2802 768
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 362 41 287 51 0 0 0
OW 0 12 2 41 77 0 0 0
VODI 0 8 2 26 142 70 0 0
ODI 0 1 0 25 99 70 0 0
CDI 0 0 0 66 237 1299 0 0
VCDI 0 0 0 11 66 3417 2802 768

Chuckchi Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 282 1103 24 50 0 0 0 0
OW 8 15 20 166 2 0 0 0
VODI 0 0 2 196 112 0 0 0
ODI 0 0 0 8 767 66 0 0
CDI 0 0 0 0 230 1620 398 0
VCDI 0 0 0 0 0 384 201 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 285 1088 34 114 1 0 0 0
OW 5 22 8 163 17 0 0 0
VODI 0 8 3 106 237 0 0 0
ODI 0 0 1 34 498 180 0 0
CDI 0 0 0 3 358 1465 395 0
VCDI 0 0 0 0 0 425 204 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 0 643 48 205 20 0 0 0
OW 0 65 24 360 72 3 0 0
VODI 0 5 6 477 371 21 0 0
ODI 0 0 0 14 1393 163 0 0
CDI 0 0 0 0 100 3226 23 0
VCDI 0 0 0 0 1 0 6 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 656 56 428 85 16 0 0
OW 0 45 13 355 182 25 0 0
VODI 0 12 9 265 644 67 0 0
ODI 0 0 0 8 814 242 0 0
CDI 0 0 0 0 231 3062 21 0
VCDI 0 0 0 0 1 1 8 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 1447 47 172 16 0 0 0
OW 0 83 31 426 51 0 0 0
VODI 0 2 0 343 350 16 0 0
ODI 0 0 0 46 903 190 0 0
CDI 0 0 0 4 34 766 79 0
VCDI 0 0 0 0 0 3 317 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1328 42 299 80 0 0 0
OW 0 183 26 344 185 27 0 0
VODI 0 21 10 292 714 258 0 0
ODI 0 0 0 19 268 548 240 0
CDI 0 0 0 37 107 142 156 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 631 2807 45 252 0 0 0 0
OW 0 120 41 432 11 0 0 0
VODI 0 0 0 200 177 0 0 0
ODI 0 0 0 1 387 73 0 0
CDI 0 0 0 0 40 441 62 0
VCDI 0 0 0 0 0 91 520 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 631 2851 69 558 22 0 0 0
OW 0 72 15 256 113 0 0 0
VODI 0 4 2 71 380 36 0 0
ODI 0 0 0 0 63 169 28 0
CDI 0 0 0 0 37 287 118 0
VCDI 0 0 0 0 0 113 436 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 7117 3344 35 163 17 0 0 0
OW 0 3 13 160 22 1 2 0
VODI 0 0 0 91 131 6 5 0
ODI 0 0 0 0 156 19 8 0
CDI 0 0 0 0 4 32 2 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 7117 3289 37 209 33 0 0 0
OW 0 58 11 159 80 4 2 0
VODI 0 0 0 46 197 21 12 0
ODI 0 0 0 0 20 31 2 0
CDI 0 0 0 0 0 2 1 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 5542 2549 39 433 120 0 0 0
OW 0 13 1 176 95 0 0 0
VODI 0 4 3 73 420 4 0 0
ODI 0 0 0 10 1056 91 0 0
CDI 0 0 0 23 642 402 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 5542 2529 38 559 240 0 0 0
OW 0 21 1 85 373 4 0 0
VODI 0 12 2 32 639 5 0 0
ODI 0 4 2 15 380 89 0 0
CDI 0 0 0 24 696 399 0 0
VCDI 0 0 0 0 5 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 10916 1756 24 139 26 0 0 0
OW 0 0 0 59 35 0 0 0
VODI 0 0 0 8 25 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 10916 1740 23 176 40 0 0 0
OW 0 16 1 30 46 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 64 2662 49 368 53 2 0 0
OW 0 30 9 166 186 1 0 0
VODI 0 2 3 98 547 1 0 0
ODI 0 0 0 4 499 98 0 0
CDI 0 0 0 0 34 917 10 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 64 2634 45 442 293 2 0 0
OW 0 54 12 146 517 2 0 0
VODI 0 6 4 45 423 131 0 0
ODI 0 0 0 3 86 432 0 0
CDI 0 0 0 0 0 452 10 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 10 2454 93 535 102 2 0 0
OW 0 11 9 311 184 6 0 0
VODI 0 0 0 76 411 9 2 0
ODI 0 0 0 14 492 399 5 0
CDI 0 0 0 3 144 2248 79 0
VCDI 0 0 0 1 21 686 280 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 10 2453 97 639 245 5 0 0
OW 0 12 5 218 326 17 1 0
VODI 0 0 0 49 471 194 9 0
ODI 0 0 0 14 86 619 18 0
CDI 0 0 0 19 151 1542 146 0
VCDI 0 0 0 1 75 973 192 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 16283 2364 59 433 103 0 0 0
OW 0 18 8 110 52 2 0 0
VODI 0 2 2 74 114 6 0 0
ODI 0 0 0 1 205 72 0 0
CDI 0 0 0 0 32 267 2 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 16283 2365 64 463 106 1 0 0
OW 0 15 3 101 88 2 0 0
VODI 0 4 2 30 138 64 0 0
ODI 0 0 0 24 167 166 2 0
CDI 0 0 0 0 7 114 0 0
VCDI 0 0 0 0 0 0 0 0


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