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: 2024-05-23

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-05-27

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 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 1 4 13 0 0 0
ODI 0 0 0 28 51 11 0 0
CDI 0 0 0 34 214 1068 68 0
VCDI 0 0 0 0 144 1362 12337 21567
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 1 1 11 1 0 0
ODI 0 0 0 3 20 11 0 0
CDI 0 0 0 43 155 712 944 336
VCDI 0 0 0 19 236 1717 11461 21231

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 2 0 0 0 0 0 0
OW 0 117 33 5 0 0 0 0
VODI 0 14 18 38 6 0 0 0
ODI 0 3 0 33 34 15 2 0
CDI 0 0 0 23 26 39 14 0
VCDI 0 0 0 0 45 78 1203 1371
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 0 0 0 0 0 0
OW 0 7 0 1 0 0 0 0
VODI 0 75 8 8 0 3 2 0
ODI 0 51 27 22 14 9 7 0
CDI 0 2 16 61 39 42 23 0
VCDI 0 0 0 7 58 78 1187 1371

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 35 4 13 7 0 0 0
OW 0 52 44 38 12 0 0 0
VODI 0 6 18 135 81 0 0 0
ODI 0 0 0 69 234 7 0 0
CDI 0 0 0 32 314 792 26 0
VCDI 0 0 0 0 7 537 4891 2624
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 17 5 20 9 0 0 0
OW 0 28 7 22 0 0 0 0
VODI 0 30 26 52 33 0 0 0
ODI 0 12 17 59 102 3 0 0
CDI 0 6 11 131 454 584 40 0
VCDI 0 0 0 3 57 749 4877 2624

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 36 0 0 0 0 0 0
OW 0 80 8 11 4 0 0 0
VODI 0 15 7 32 27 3 0 0
ODI 0 17 4 17 34 2 0 0
CDI 0 3 16 64 180 61 0 0
VCDI 0 0 0 0 82 245 3020 1685
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 30 0 0 0 0 0 0
OW 0 20 1 3 1 0 0 0
VODI 0 34 1 16 15 0 0 0
ODI 0 25 5 13 29 3 0 0
CDI 0 34 11 35 91 19 3 0
VCDI 0 8 17 57 191 289 3017 1685

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 11 0 0 0
ODI 0 0 0 0 38 5 13 0
CDI 0 0 0 0 74 108 50 0
VCDI 0 0 0 0 67 912 4511 1435
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 1 0 0 0
VODI 0 0 0 0 4 0 12 0
ODI 0 0 0 0 13 5 26 0
CDI 0 0 0 0 82 60 83 0
VCDI 0 0 0 0 90 960 4453 1435

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 0 0 0 0
VODI 0 0 0 21 11 2 2 0
ODI 0 0 0 16 38 18 8 0
CDI 0 0 0 25 130 160 39 0
VCDI 0 0 0 0 163 760 3898 6
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 4 0 0 0 0
VODI 0 0 0 10 19 8 3 0
ODI 0 0 0 11 32 27 14 0
CDI 0 0 0 39 89 117 127 0
VCDI 0 0 0 0 202 788 3803 6

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 0 0 0 0 0
OW 0 0 0 0 3 0 0 0
VODI 0 0 0 23 21 3 0 0
ODI 0 0 0 38 209 17 4 0
CDI 0 0 0 8 322 1396 163 0
VCDI 0 0 0 0 107 706 3297 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 0 0 0 0 0
OW 0 0 0 0 1 0 0 0
VODI 0 0 0 9 14 1 0 0
ODI 0 0 0 23 62 8 1 0
CDI 0 0 0 37 400 1192 486 0
VCDI 0 0 0 0 185 921 2977 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 4396 2795 12 2 0 0 0 0
OW 0 377 133 113 2 2 0 0
VODI 0 31 33 506 50 7 0 0
ODI 0 8 6 196 634 30 0 0
CDI 0 1 2 80 610 1210 52 0
VCDI 0 0 0 1 11 17 5 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4396 2631 13 5 0 0 0 0
OW 0 438 72 99 4 4 0 0
VODI 0 100 72 330 59 7 0 0
ODI 0 23 10 246 472 34 0 0
CDI 0 20 19 209 702 1201 54 0
VCDI 0 0 0 9 70 20 3 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 5408 2837 18 2 0 0 0 0
OW 0 190 149 77 0 0 0 0
VODI 0 2 13 354 71 0 0 0
ODI 0 0 0 54 514 24 0 0
CDI 0 0 0 0 569 1247 11 0
VCDI 0 0 0 0 0 2 154 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5408 2738 16 4 0 0 0 0
OW 0 250 90 59 2 0 0 0
VODI 0 39 72 208 28 0 0 0
ODI 0 2 2 200 287 42 0 0
CDI 0 0 0 16 837 1181 69 0
VCDI 0 0 0 0 0 50 96 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 8101 3107 63 24 0 0 0 0
OW 0 53 102 151 11 0 0 0
VODI 0 0 3 215 123 9 0 0
ODI 0 0 0 8 201 30 0 0
CDI 0 0 0 0 112 290 40 0
VCDI 0 0 0 0 0 153 191 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8101 3041 72 41 1 0 0 0
OW 0 111 81 151 30 2 0 0
VODI 0 8 15 173 134 31 0 0
ODI 0 0 0 31 134 42 2 0
CDI 0 0 0 2 148 211 112 0
VCDI 0 0 0 0 0 196 117 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 0 251 0 0 0 0 0 0
OW 0 154 42 19 0 0 0 0
VODI 0 5 27 179 8 0 0 0
ODI 0 1 14 146 152 0 0 0
CDI 0 0 0 60 472 2018 198 0
VCDI 0 0 0 1 31 349 1620 56
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 236 0 0 0 0 0 0
OW 0 111 5 4 0 0 0 0
VODI 0 32 27 23 0 0 0 0
ODI 0 24 10 85 23 2 1 0
CDI 0 8 41 264 535 1418 538 0
VCDI 0 0 0 29 105 947 1279 56

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 149 957 5 6 0 0 0 0
OW 0 341 36 75 3 0 0 0
VODI 0 69 18 505 57 0 0 0
ODI 0 32 10 207 169 20 0 0
CDI 0 32 28 199 365 228 23 8
VCDI 0 0 0 8 175 809 2652 1352
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 149 711 3 16 7 0 0 0
OW 0 357 17 46 8 0 0 0
VODI 0 122 10 215 9 0 0 0
ODI 0 86 12 280 74 15 1 0
CDI 0 80 23 301 314 170 81 8
VCDI 0 75 32 142 357 872 2593 1352

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8923 3778 12 52 5 0 0 0
OW 0 283 148 107 19 0 0 0
VODI 0 10 22 844 201 1 0 0
ODI 0 0 0 112 546 17 0 0
CDI 0 0 0 0 190 367 48 0
VCDI 0 0 0 0 1 23 37 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8922 3481 15 42 5 0 0 0
OW 1 509 97 107 21 0 0 0
VODI 0 67 48 569 214 2 0 0
ODI 0 14 20 243 354 13 0 0
CDI 0 0 2 154 348 276 32 0
VCDI 0 0 0 0 20 117 53 0


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