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: 2021-07-01

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-07-05

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 0 211 10 42 2 0 0 0
OW 0 14 9 89 17 0 0 0
VODI 0 3 2 121 108 0 0 0
ODI 0 5 2 96 819 80 1 0
CDI 0 11 5 43 1505 10725 1231 0
VCDI 0 0 0 0 21 6427 12747 2556
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 182 11 57 6 0 0 0
OW 0 35 4 70 36 0 0 0
VODI 0 10 4 73 116 4 0 0
ODI 0 4 3 57 393 378 2 0
CDI 0 13 6 134 1583 8191 1745 0
VCDI 0 0 0 0 338 8659 12232 2556

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 0 240 10 44 21 0 0 0
OW 0 7 3 2 0 0 0 0
VODI 0 3 0 5 3 0 0 0
ODI 0 2 0 3 2 12 0 0
CDI 0 1 3 12 47 404 5 0
VCDI 0 0 0 0 177 1322 805 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 227 10 44 21 0 0 0
OW 0 16 1 1 0 0 0 0
VODI 0 7 2 6 4 4 0 0
ODI 0 2 0 3 1 12 0 0
CDI 0 1 3 12 40 300 1 0
VCDI 0 0 0 0 184 1422 809 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 0 663 11 62 1 0 0 0
OW 0 36 4 39 12 0 0 0
VODI 0 13 2 50 36 0 0 0
ODI 0 16 3 40 106 22 0 0
CDI 0 20 4 86 196 1769 212 0
VCDI 0 0 0 0 4 3234 2740 601
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 596 10 59 11 0 0 0
OW 0 47 1 31 22 0 0 0
VODI 0 37 2 32 46 17 0 0
ODI 0 18 4 27 47 64 0 0
CDI 0 49 6 99 169 1208 235 0
VCDI 0 1 1 29 60 3736 2717 601

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 223 1448 15 16 0 0 0 0
OW 2 44 23 131 1 0 0 0
VODI 0 11 1 167 52 0 0 0
ODI 0 24 2 72 458 65 0 0
CDI 0 1 1 13 198 2131 479 0
VCDI 0 0 0 0 0 62 14 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 223 1257 14 31 0 0 0 0
OW 2 139 6 62 6 0 0 0
VODI 0 76 14 105 39 0 0 0
ODI 0 23 4 113 225 60 0 0
CDI 0 33 4 88 439 2084 493 0
VCDI 0 0 0 0 0 114 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 1195 25 97 24 0 0 0
OW 0 83 39 314 59 0 0 0
VODI 0 10 6 717 452 0 0 0
ODI 0 1 0 20 2423 187 0 0
CDI 0 0 0 1 213 1380 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 0 1113 20 129 65 0 0 0
OW 0 141 39 319 96 0 0 0
VODI 0 28 9 512 836 0 0 0
ODI 0 7 2 188 1787 521 0 0
CDI 0 0 0 1 387 1046 0 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 0 3111 107 767 2 0 0 0
OW 0 45 21 330 18 0 0 0
VODI 0 0 2 194 92 0 0 0
ODI 0 0 0 1 499 102 0 0
CDI 0 0 0 0 27 8 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 0 2986 106 903 31 0 0 0
OW 0 139 19 212 37 0 0 0
VODI 0 31 5 172 122 0 0 0
ODI 0 0 0 5 311 37 0 0
CDI 0 0 0 0 137 73 0 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 939 2762 31 73 0 0 0 0
OW 0 178 36 195 32 5 0 0
VODI 0 1 3 102 149 4 0 0
ODI 0 0 0 0 135 140 0 0
CDI 0 0 0 0 32 440 7 0
VCDI 0 0 0 0 0 491 576 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 939 2711 37 164 22 1 0 0
OW 0 217 31 143 120 8 0 0
VODI 0 13 2 63 154 113 0 0
ODI 0 0 0 0 20 215 0 0
CDI 0 0 0 0 24 194 42 0
VCDI 0 0 0 0 8 549 541 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 9072 1658 7 16 0 0 0 0
OW 0 19 10 61 1 0 0 0
VODI 0 0 0 142 51 0 0 0
ODI 0 0 0 11 235 0 0 0
CDI 0 0 0 0 48 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 9072 1665 9 28 0 0 0 0
OW 0 12 8 75 2 0 0 0
VODI 0 0 0 107 49 0 0 0
ODI 0 0 0 20 159 0 0 0
CDI 0 0 0 0 125 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 7291 2557 19 87 6 1 0 0
OW 0 51 12 169 22 0 0 0
VODI 0 5 3 739 128 0 0 0
ODI 0 0 0 164 308 51 0 0
CDI 0 0 0 8 41 34 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 7291 2544 27 153 1 0 0 0
OW 0 46 3 270 90 1 0 0
VODI 0 23 3 394 97 0 0 0
ODI 0 0 1 295 236 39 0 0
CDI 0 0 0 55 81 46 0 0
VCDI 0 0 0 0 0 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 11531 1393 16 37 0 0 0 0
OW 6 1 0 4 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 11536 1393 15 36 0 0 0 0
OW 1 1 1 5 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 155 3091 46 202 21 24 0 0
OW 0 154 28 275 34 12 0 0
VODI 0 0 0 220 246 12 0 0
ODI 0 0 0 25 912 78 0 0
CDI 0 0 0 0 51 217 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 155 2991 50 296 51 33 0 0
OW 0 218 18 326 174 15 0 0
VODI 0 36 6 88 611 73 0 0
ODI 0 0 0 12 326 140 0 0
CDI 0 0 0 0 102 82 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 997 3811 56 395 30 0 0 0
OW 0 293 45 391 92 1 0 0
VODI 0 36 15 730 589 42 0 0
ODI 0 0 0 57 546 105 0 0
CDI 0 0 0 0 32 315 9 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 997 3708 72 674 224 1 0 0
OW 0 253 20 190 413 38 0 0
VODI 0 171 20 403 371 126 0 0
ODI 0 8 4 287 236 231 9 0
CDI 0 0 0 19 45 64 0 0
VCDI 0 0 0 0 0 3 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 19180 998 4 21 0 0 0 0
OW 0 6 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 19180 984 4 21 0 0 0 0
OW 0 19 0 0 0 0 0 0
VODI 0 1 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


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