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: 2022-06-30

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-07-04

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 0 339 4 16 0 0 0 0
OW 0 55 9 35 0 0 0 0
VODI 0 29 5 61 8 1 0 0
ODI 0 20 2 42 54 7 0 0
CDI 0 10 5 68 742 3848 417 0
VCDI 0 0 0 6 417 15107 15132 463
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 267 3 16 0 0 0 0
OW 0 67 2 11 1 0 0 0
VODI 0 57 6 32 7 1 0 0
ODI 0 29 7 43 26 8 0 0
CDI 0 33 7 118 422 2736 641 0
VCDI 0 0 0 8 765 16218 14908 463

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 4 0 0 0 0
OW 0 0 0 5 1 0 0 0
VODI 0 6 0 12 25 2 0 0
ODI 0 7 0 10 164 38 0 0
CDI 0 0 0 3 553 251 0 0
VCDI 0 1 0 2 636 1381 32 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 4 0 0 0 0
OW 0 0 0 5 2 0 0 0
VODI 0 4 0 15 29 11 0 0
ODI 0 9 0 6 77 36 0 0
CDI 0 0 0 3 414 213 0 0
VCDI 0 1 0 3 857 1412 32 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 0 0 49 18 0 0 0
OW 0 0 0 20 11 0 0 0
VODI 0 0 0 69 27 0 0 0
ODI 0 59 10 135 149 0 0 0
CDI 0 65 18 342 1749 440 0 0
VCDI 0 1 0 3 901 5916 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 0 0 47 24 0 0 0
OW 0 0 0 15 10 0 0 0
VODI 0 2 0 44 13 0 0 0
ODI 0 40 5 52 108 0 0 0
CDI 0 73 22 423 1164 226 0 0
VCDI 0 10 1 37 1536 6130 0 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 642 1588 34 80 1 0 0 0
OW 5 45 17 178 9 0 0 0
VODI 0 5 5 310 153 0 0 0
ODI 0 0 0 104 678 1 0 0
CDI 0 0 0 29 1192 507 0 0
VCDI 0 0 0 0 71 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 642 1503 30 96 12 0 0 0
OW 5 90 9 143 43 0 0 0
VODI 0 45 16 170 178 0 0 0
ODI 0 0 1 194 306 0 0 0
CDI 0 0 0 98 1138 360 0 0
VCDI 0 0 0 0 427 148 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 0 124 5 23 0 0 0 0
OW 0 86 8 67 11 0 0 0
VODI 0 16 5 192 183 6 0 0
ODI 0 32 3 91 670 74 0 0
CDI 0 0 0 27 480 4952 189 0
VCDI 0 0 0 1 0 1 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 87 8 85 12 0 0 0
OW 0 45 2 47 77 0 0 0
VODI 0 61 3 64 163 22 0 0
ODI 0 32 4 72 303 211 0 0
CDI 0 33 4 132 764 4712 189 0
VCDI 0 0 0 1 25 88 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 1076 19 118 38 0 0 0
OW 0 117 37 108 38 0 0 0
VODI 0 15 7 303 234 0 0 0
ODI 0 3 1 46 754 88 0 0
CDI 0 0 0 1 342 733 54 0
VCDI 0 0 0 0 0 151 1028 15
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1019 26 119 61 0 0 0
OW 0 150 24 150 66 0 0 0
VODI 0 33 12 198 316 13 0 0
ODI 0 6 1 75 454 153 0 0
CDI 0 3 1 34 509 740 846 1
VCDI 0 0 0 0 0 66 236 14

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 227 3499 58 141 10 1 0 0
OW 0 185 40 290 44 1 0 0
VODI 0 37 16 563 219 3 0 0
ODI 0 4 1 89 368 11 0 0
CDI 0 0 2 36 180 228 42 0
VCDI 0 0 0 0 1 26 9 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 227 3446 63 233 33 1 0 0
OW 0 163 22 327 124 3 0 0
VODI 0 92 22 316 178 5 0 0
ODI 0 20 7 161 232 14 0 0
CDI 0 4 3 82 254 202 49 0
VCDI 0 0 0 0 1 45 2 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 9513 1808 5 3 0 0 0 0
OW 0 2 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 9513 1805 5 3 0 0 0 0
OW 0 5 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7079 2602 25 117 0 0 0 0
OW 0 73 17 122 28 0 0 0
VODI 0 20 7 193 120 0 0 0
ODI 0 1 1 80 330 12 0 0
CDI 0 0 0 5 504 193 0 0
VCDI 0 0 0 0 14 153 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7079 2631 29 164 18 0 0 0
OW 0 52 13 109 41 0 0 0
VODI 0 11 6 149 106 0 0 0
ODI 0 2 2 72 182 7 0 0
CDI 0 0 0 23 615 182 0 0
VCDI 0 0 0 0 34 169 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 9316 3137 23 102 1 0 0 0
OW 0 20 6 99 13 0 0 0
VODI 0 0 0 98 72 1 0 0
ODI 0 0 0 6 94 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 9316 3149 27 129 2 0 0 0
OW 0 8 2 106 19 0 0 0
VODI 0 0 0 69 129 1 0 0
ODI 0 0 0 1 30 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 14 2116 42 254 93 7 0 0
OW 0 237 49 318 61 2 0 0
VODI 0 0 5 270 284 0 0 0
ODI 0 0 0 3 683 100 0 0
CDI 0 0 0 0 125 1137 3 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 14 2035 36 294 131 6 0 0
OW 0 171 34 278 155 3 0 0
VODI 0 147 26 254 563 48 0 0
ODI 0 0 0 19 290 365 0 0
CDI 0 0 0 0 107 824 3 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 1992 3351 41 277 81 3 0 0
OW 0 161 27 528 94 17 0 0
VODI 0 16 3 336 306 36 0 0
ODI 0 26 3 122 566 326 0 0
CDI 0 0 0 1 30 244 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 1992 3363 52 489 125 18 0 0
OW 0 149 16 469 181 25 0 0
VODI 0 2 1 148 269 180 0 0
ODI 0 40 5 135 428 317 0 0
CDI 0 0 0 23 73 86 0 0
VCDI 0 0 0 0 1 0 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 17958 1749 8 34 28 0 0 0
OW 0 23 25 41 12 0 0 0
VODI 0 0 0 48 51 4 0 0
ODI 0 0 0 0 119 35 0 0
CDI 0 0 0 0 4 70 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 17958 1770 26 59 47 0 0 0
OW 0 2 7 47 19 6 0 0
VODI 0 0 0 17 104 32 0 0
ODI 0 0 0 0 44 45 0 0
CDI 0 0 0 0 0 26 0 0
VCDI 0 0 0 0 0 0 0 0


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