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: 2022-05-19

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-05-23

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 0 0 0 2 2 0 0
OW 0 0 0 0 3 6 0 0
VODI 0 3 0 1 4 19 0 0
ODI 0 3 0 0 0 30 8 0
CDI 0 13 1 6 1 120 47 0
VCDI 0 5 1 17 68 592 6779 29171
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 3 6 0 0
OW 0 0 0 0 4 11 0 0
VODI 0 0 0 1 2 24 3 0
ODI 0 2 0 0 0 33 16 0
CDI 0 5 0 0 0 133 282 0
VCDI 0 17 2 23 69 562 6533 29171

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 2 1 0 0 0
ODI 0 0 0 2 2 0 0 0
CDI 0 0 0 8 4 5 1 0
VCDI 0 0 0 2 3 51 510 2542
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 2 1 0 0 0
CDI 0 0 0 6 4 5 13 0
VCDI 0 0 0 6 5 51 498 2542

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 53 11 126 340 480 2549 6423
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 53 11 126 340 480 2549 6423

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 17 0 0 0 0 0 0
OW 0 39 2 5 4 0 6 0
VODI 0 32 4 29 9 7 2 0
ODI 0 56 2 39 57 7 3 0
CDI 0 108 12 116 250 228 2 0
VCDI 0 39 5 32 87 571 2853 1031
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 13 0 0 0 0 2 0
OW 0 26 2 3 0 2 8 0
VODI 0 25 2 15 13 9 3 0
ODI 0 38 3 24 33 17 0 0
CDI 0 113 8 76 121 72 0 0
VCDI 0 76 10 103 240 713 2853 1031

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 8 2 0 0
CDI 0 0 0 1 102 162 24 0
VCDI 0 0 0 15 235 1435 4648 614
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 4 4 0 0
CDI 0 0 0 1 84 120 53 0
VCDI 0 0 0 15 257 1475 4619 614

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 1 2 0 0 0
OW 0 0 1 16 9 0 0 0
VODI 0 47 11 52 21 4 0 0
ODI 0 50 4 57 39 13 11 0
CDI 0 117 16 137 276 141 87 0
VCDI 0 86 5 105 386 920 2492 220
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 1 3 0 0 0
OW 0 0 0 9 5 0 0 0
VODI 0 7 4 28 12 4 10 0
ODI 0 35 11 33 25 18 17 0
CDI 0 114 6 107 94 133 141 0
VCDI 0 144 16 190 594 923 2422 220

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 0 0 6 0 0 0 0
OW 0 0 0 46 7 0 0 0
VODI 0 0 0 74 86 17 2 0
ODI 0 0 0 27 284 103 7 0
CDI 0 0 0 17 710 1000 128 0
VCDI 0 0 0 2 551 2167 1097 0
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 22 0 0 0 0
OW 0 0 0 30 8 0 0 0
VODI 0 0 0 52 90 15 2 0
ODI 0 0 0 28 174 113 8 0
CDI 0 0 0 23 673 701 376 0
VCDI 0 0 0 17 693 2458 848 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 3935 3299 62 358 19 0 0 0
OW 0 41 11 270 60 0 0 0
VODI 0 22 1 255 265 0 0 0
ODI 0 29 4 114 764 12 0 0
CDI 0 113 12 167 1013 266 11 0
VCDI 0 0 0 0 121 106 1 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3935 3289 68 491 55 0 0 0
OW 0 9 3 184 124 0 0 0
VODI 0 24 2 155 237 0 0 0
ODI 0 23 0 99 282 13 0 0
CDI 0 83 11 135 898 195 8 0
VCDI 0 76 6 100 646 176 4 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 4758 3309 18 120 13 0 0 0
OW 0 47 18 120 27 0 0 0
VODI 0 0 0 124 82 1 0 0
ODI 0 0 0 47 199 22 0 0
CDI 0 0 0 5 308 1089 19 0
VCDI 0 0 0 0 2 739 629 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4758 3297 23 151 32 0 0 0
OW 0 44 7 91 46 1 0 0
VODI 0 15 6 78 98 18 0 0
ODI 0 0 0 72 128 71 0 0
CDI 0 0 0 24 322 931 21 0
VCDI 0 0 0 0 5 830 627 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 8249 3306 58 236 190 5 0 0
OW 0 53 9 75 73 19 0 0
VODI 0 15 5 34 86 34 1 0
ODI 0 0 1 27 91 59 9 0
CDI 0 0 0 0 26 129 108 0
VCDI 0 0 0 0 0 0 90 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8249 3318 62 304 289 35 1 0
OW 0 27 3 14 72 41 3 0
VODI 0 22 4 23 42 88 24 0
ODI 0 7 4 30 44 55 88 0
CDI 0 0 0 1 19 27 92 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 0 178 6 17 0 0 0 0
OW 0 49 3 8 0 0 0 0
VODI 0 37 7 50 45 0 0 0
ODI 0 24 5 129 160 9 0 0
CDI 0 11 7 191 424 294 33 0
VCDI 0 0 0 6 182 1309 2619 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 127 5 15 0 0 0 0
OW 0 43 1 5 0 0 0 0
VODI 0 44 2 17 20 0 0 0
ODI 0 43 6 25 108 10 0 0
CDI 0 28 11 159 232 121 40 0
VCDI 0 14 3 180 451 1481 2612 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 0 16 4 40 15 0 0 0
OW 0 14 1 79 69 3 0 0
VODI 0 5 2 267 357 17 2 0
ODI 0 3 0 44 851 126 3 0
CDI 0 8 3 55 627 671 83 0
VCDI 0 0 3 28 131 528 4159 373
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 30 5 84 76 2 0 0
OW 0 4 1 118 196 35 2 0
VODI 0 1 1 148 260 66 1 0
ODI 0 2 0 53 370 82 25 0
CDI 0 9 4 57 664 420 366 16
VCDI 0 0 2 53 484 740 3853 357

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12234 4485 46 697 439 0 0 0
OW 0 47 17 113 71 0 0 0
VODI 0 5 4 99 411 3 0 0
ODI 0 0 0 0 404 58 2 0
CDI 0 0 0 0 46 344 85 0
VCDI 0 0 0 0 0 197 402 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12234 4490 55 823 573 2 0 0
OW 0 22 8 46 338 15 0 0
VODI 0 20 1 28 251 85 47 0
ODI 0 5 3 12 131 74 8 0
CDI 0 0 0 0 78 250 25 0
VCDI 0 0 0 0 0 176 409 0


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