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: 2024-05-30

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: 2024-06-03

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 37 11 2 0 0 0 0
VODI 0 3 4 41 16 0 0 0
ODI 0 1 5 53 157 2 0 0
CDI 0 0 0 27 409 1064 31 0
VCDI 0 0 0 0 2 569 10814 23654
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 4 1 2 3 0 0 0
ODI 0 18 2 28 23 2 3 0
CDI 0 19 17 93 550 944 269 1
VCDI 0 0 0 0 8 689 10573 23653

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 27 0 0 0 0 0 0
OW 0 156 17 18 0 0 0 0
VODI 0 26 3 34 11 1 0 0
ODI 0 1 2 28 26 8 5 0
CDI 0 0 0 19 37 198 30 0
VCDI 0 0 0 0 24 336 1477 635
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 6 0 0 0 0 0 0
OW 0 116 10 2 0 0 0 0
VODI 0 64 8 39 15 3 0 0
ODI 0 22 2 30 20 18 15 0
CDI 0 2 2 25 39 85 42 0
VCDI 0 0 0 3 24 437 1455 635

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 72 4 10 1 0 0 0
OW 0 73 90 72 1 0 0 0
VODI 0 33 9 321 27 0 0 0
ODI 0 2 0 50 357 7 0 0
CDI 0 0 0 1 204 1160 116 0
VCDI 0 0 0 0 0 165 6045 1158
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 44 4 6 1 0 0 0
OW 0 81 21 58 0 0 0 0
VODI 0 24 54 130 2 0 0 0
ODI 0 23 21 185 47 0 0 0
CDI 0 8 3 75 540 824 1159 82
VCDI 0 0 0 0 0 508 5002 1076

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 66 2 6 0 0 0 0
OW 0 78 11 31 2 0 0 0
VODI 0 12 13 53 17 0 0 0
ODI 0 0 8 28 18 0 0 0
CDI 0 0 5 64 79 50 4 0
VCDI 0 0 0 10 93 199 2428 2376
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 52 2 16 0 0 0 0
OW 0 37 2 10 3 0 0 0
VODI 0 30 4 23 5 0 0 0
ODI 0 20 6 23 14 0 0 0
CDI 0 17 15 56 40 58 25 0
VCDI 0 0 10 64 147 191 2407 2376

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 1 0 0 0
ODI 0 0 0 2 10 0 0 0
CDI 0 0 0 19 77 6 2 0
VCDI 0 0 0 6 112 679 3595 2715
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 3 0 0 0
CDI 0 0 0 15 43 3 3 0
VCDI 0 0 0 12 154 682 3594 2715

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 3 0 0 0
OW 0 0 1 25 13 0 0 0
VODI 0 0 6 93 103 2 0 0
ODI 0 1 3 79 218 4 0 0
CDI 0 0 3 100 536 407 54 0
VCDI 0 0 0 64 201 381 2323 678
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 5 0 0 0
OW 0 0 0 10 21 0 0 0
VODI 0 0 2 50 76 2 0 0
ODI 0 0 4 66 124 13 0 0
CDI 0 1 7 137 515 300 314 0
VCDI 0 0 0 99 333 479 2063 678

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 3 3 1 0 0
VODI 0 0 0 240 87 8 1 0
ODI 0 0 0 101 397 19 1 0
CDI 0 0 0 16 644 2189 100 0
VCDI 0 0 0 16 165 514 1670 142
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 1 4 1 0 0
VODI 0 0 0 46 28 7 2 0
ODI 0 0 0 173 117 2 0 0
CDI 0 0 0 154 875 1310 82 0
VCDI 0 0 0 2 272 1411 1688 142

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4768 2785 24 7 0 0 0 0
OW 0 478 211 117 1 0 0 0
VODI 0 13 29 834 77 1 0 0
ODI 0 0 0 177 1173 64 0 0
CDI 0 0 0 0 132 431 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 4768 2659 35 10 0 0 0 0
OW 0 326 75 100 11 0 0 0
VODI 0 237 102 248 67 3 0 0
ODI 0 46 49 360 250 13 0 0
CDI 0 8 3 417 1052 480 0 0
VCDI 0 0 0 0 3 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 5444 2945 16 25 0 0 0 0
OW 0 138 120 137 0 0 0 0
VODI 0 1 2 463 102 0 0 0
ODI 0 0 0 34 853 73 0 0
CDI 0 0 0 0 145 744 23 0
VCDI 0 0 0 0 0 133 298 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5444 2871 23 30 0 0 0 0
OW 0 195 87 170 9 0 0 0
VODI 0 18 27 356 140 5 0 0
ODI 0 0 1 103 831 290 0 0
CDI 0 0 0 0 120 603 110 0
VCDI 0 0 0 0 0 52 211 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 7461 3011 37 25 1 0 0 0
OW 0 233 159 162 29 0 0 0
VODI 0 7 12 532 210 4 0 0
ODI 0 0 0 82 505 37 0 0
CDI 0 0 0 1 99 288 56 0
VCDI 0 0 0 0 0 1 35 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7461 2904 46 43 14 0 0 0
OW 0 297 106 226 80 2 0 0
VODI 0 49 55 419 248 42 0 0
ODI 0 1 1 106 412 109 2 0
CDI 0 0 0 8 90 177 89 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 0 302 0 0 0 0 0 0
OW 0 241 82 18 0 0 0 0
VODI 0 43 32 222 45 0 0 0
ODI 0 14 5 81 404 17 2 0
CDI 0 0 0 44 336 2106 85 0
VCDI 0 0 0 0 8 114 1583 19
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 246 0 0 0 0 0 0
OW 0 116 13 3 0 0 0 0
VODI 0 134 57 114 32 0 0 0
ODI 0 58 30 99 134 70 3 0
CDI 0 46 19 116 557 1990 412 0
VCDI 0 0 0 33 70 177 1255 19

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 313 953 4 29 3 0 0 0
OW 0 899 83 127 3 0 0 0
VODI 0 214 33 365 98 4 0 0
ODI 0 40 14 157 430 31 0 0
CDI 0 2 0 123 583 638 47 0
VCDI 0 17 0 37 304 793 2182 12
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 313 849 2 36 3 0 0 0
OW 0 519 49 130 4 0 0 0
VODI 0 299 31 145 44 0 0 0
ODI 0 163 5 141 176 26 11 0
CDI 0 277 40 246 661 279 91 0
VCDI 0 18 7 140 533 1161 2127 12

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10253 2759 1 1 0 0 0 0
OW 0 604 146 238 21 0 0 0
VODI 0 7 6 519 205 0 0 0
ODI 0 0 0 24 453 11 0 0
CDI 0 0 0 6 97 231 24 0
VCDI 0 0 0 0 2 8 130 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10250 2296 1 1 9 0 0 0
OW 3 996 95 277 86 0 0 0
VODI 0 78 53 432 250 1 0 0
ODI 0 0 4 71 329 79 6 0
CDI 0 0 0 7 99 165 142 0
VCDI 0 0 0 0 5 5 6 0


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