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: 2022-05-12

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-05-16

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 0 15 0 0
OW 0 0 0 0 0 14 2 0
VODI 0 4 0 0 0 10 12 0
ODI 0 5 0 0 0 8 27 0
CDI 0 12 0 1 1 41 94 0
VCDI 0 10 3 19 89 355 5013 31167
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 24 0 0
OW 0 0 0 0 0 12 13 0
VODI 0 0 0 0 0 10 49 0
ODI 0 1 0 0 0 8 64 0
CDI 0 11 0 0 2 33 176 1
VCDI 0 19 3 20 88 356 4846 31166

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 0 0 0 0 0
ODI 0 0 0 4 1 0 0 0
CDI 0 0 0 11 8 9 31 1
VCDI 0 0 0 0 0 3 668 2397
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 11 7 6 35 37
VCDI 0 0 0 4 2 6 664 2361

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 1 2 0 0
VCDI 0 56 8 123 316 729 3523 5224
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 8 3 0 0
VCDI 0 56 8 123 309 728 3523 5224

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 19 0 0 0 0
ODI 0 0 0 15 8 1 4 0
CDI 0 0 0 45 40 32 14 0
VCDI 0 0 0 8 243 998 2937 1290
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 4 0 0 0 0
ODI 0 0 0 16 2 0 6 0
CDI 0 0 0 57 37 32 49 0
VCDI 0 0 0 10 252 999 2900 1290

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 0 0 0 0
CDI 0 0 0 0 1 14 10 1
VCDI 0 0 0 0 64 199 2291 4666
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 8 8 14
VCDI 0 0 0 0 65 205 2293 4653

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 0 0 0 0 0
OW 0 0 0 2 4 0 0 0
VODI 0 0 0 7 14 2 0 0
ODI 0 0 0 10 36 21 0 0
CDI 0 0 0 41 119 124 26 18
VCDI 0 0 1 58 251 1094 2614 884
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 2 0 0
ODI 0 0 0 1 22 10 0 0
CDI 0 0 0 17 70 59 27 1
VCDI 0 0 1 100 332 1170 2613 901

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 3 0 0 0 0
OW 0 0 1 69 6 0 0 0
VODI 0 0 1 103 57 0 0 0
ODI 0 0 0 66 167 27 3 0
CDI 0 0 0 64 548 434 81 0
VCDI 0 0 0 11 559 2638 1493 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 6 1 0 0 0
OW 0 0 0 31 8 0 0 0
VODI 0 0 2 82 31 0 0 0
ODI 0 0 0 65 94 24 13 0
CDI 0 0 0 59 367 420 80 0
VCDI 0 0 0 73 836 2655 1484 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 3898 3259 54 344 108 2 0 0
OW 0 49 12 130 85 2 0 0
VODI 0 11 2 136 193 10 0 0
ODI 0 9 1 58 482 33 0 0
CDI 0 23 2 40 714 414 0 0
VCDI 0 50 2 81 300 818 9 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3898 3254 56 389 151 3 0 0
OW 0 47 5 79 99 7 0 0
VODI 0 7 6 90 172 21 0 0
ODI 0 3 1 74 198 26 0 0
CDI 0 8 0 36 645 143 0 0
VCDI 0 82 5 121 617 1079 9 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 4307 3506 26 159 54 1 0 0
OW 0 33 13 98 65 2 0 0
VODI 0 4 3 101 97 13 0 0
ODI 0 0 0 37 144 37 0 0
CDI 0 0 0 18 252 928 6 0
VCDI 0 0 0 0 2 641 1149 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4307 3473 29 165 85 2 0 0
OW 0 46 6 91 71 5 0 0
VODI 0 22 6 72 92 34 0 0
ODI 0 2 1 46 104 63 0 0
CDI 0 0 0 38 205 698 7 0
VCDI 0 0 0 1 57 820 1148 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 8528 3175 33 116 76 4 0 0
OW 0 70 13 70 27 0 0 0
VODI 0 23 9 85 113 0 0 0
ODI 0 1 2 30 172 46 2 0
CDI 0 0 0 0 39 305 49 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 8528 3161 41 154 91 4 0 0
OW 0 54 5 55 59 0 0 0
VODI 0 44 7 37 124 12 0 0
ODI 0 10 4 37 71 69 17 0
CDI 0 0 0 18 82 270 34 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 41 3 15 0 0 0 0
OW 0 19 1 26 9 0 0 0
VODI 0 15 5 22 26 0 0 0
ODI 0 0 3 53 76 12 0 0
CDI 0 3 1 111 349 176 23 0
VCDI 0 0 0 0 284 714 3455 361
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 23 3 14 0 0 0 0
OW 0 16 0 9 4 0 0 0
VODI 0 18 2 24 34 5 0 0
ODI 0 18 3 23 37 17 0 0
CDI 0 0 4 105 203 111 40 0
VCDI 0 3 1 52 466 769 3438 361

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 0 0 0 0 0 0 0
OW 0 0 0 26 18 0 0 0
VODI 0 0 0 38 196 3 0 0
ODI 0 0 0 48 403 32 2 0
CDI 0 0 0 65 996 1312 46 0
VCDI 0 0 0 25 212 1500 3228 437
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 1 0 0 0
OW 0 0 0 12 16 0 0 0
VODI 0 0 0 19 120 11 2 0
ODI 0 0 0 20 247 39 15 0
CDI 0 0 0 96 879 1096 87 0
VCDI 0 0 0 54 562 1701 3172 437

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12430 3859 47 366 127 70 19 0
OW 0 12 9 185 252 68 6 0
VODI 0 3 3 105 394 71 3 0
ODI 0 0 0 23 568 174 9 0
CDI 0 0 0 0 264 749 81 0
VCDI 0 0 0 0 0 83 229 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12430 3833 50 490 365 117 19 0
OW 0 19 4 99 342 92 9 0
VODI 0 15 1 44 302 141 4 0
ODI 0 7 4 17 202 188 26 0
CDI 0 0 0 29 354 478 99 0
VCDI 0 0 0 0 40 199 190 0


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