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: 2023-06-22

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-06-26

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 1 4 15 0 0 0 0
OW 0 2 1 15 5 0 0 0
VODI 0 0 1 21 28 0 0 0
ODI 0 0 0 14 81 6 3 0
CDI 0 0 0 0 264 1071 105 0
VCDI 0 0 0 0 6 4034 18687 12538
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 4 15 0 0 0 0
OW 0 1 0 14 11 0 0 0
VODI 0 1 2 6 28 1 3 0
ODI 0 0 0 24 44 24 11 0
CDI 0 0 0 6 280 808 225 0
VCDI 0 0 0 0 21 4278 18556 12538

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 0 190 30 33 10 0 0 0
OW 0 5 1 41 9 0 0 0
VODI 0 6 1 21 19 0 0 0
ODI 0 3 1 8 57 2 1 0
CDI 0 0 0 3 519 321 3 0
VCDI 0 0 0 0 328 893 628 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 168 11 22 14 0 0 0
OW 0 23 20 60 7 0 0 0
VODI 0 7 0 1 18 0 0 0
ODI 0 4 1 15 26 3 1 0
CDI 0 2 1 8 367 145 14 0
VCDI 0 0 0 0 510 1068 617 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 0 679 58 103 0 0 0 0
OW 0 14 21 92 9 0 0 0
VODI 0 7 6 129 76 0 0 0
ODI 0 0 3 45 528 42 0 0
CDI 0 0 0 0 880 2141 0 0
VCDI 0 0 0 0 982 2871 1255 41
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 558 35 95 12 0 0 0
OW 0 97 31 63 19 0 0 0
VODI 0 24 10 118 62 0 0 0
ODI 0 12 5 35 189 27 0 0
CDI 0 9 7 58 884 1391 0 0
VCDI 0 0 0 0 1309 3636 1255 41

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 63 833 29 12 0 0 0 0
OW 1 16 41 70 0 0 0 0
VODI 0 0 3 117 30 0 0 0
ODI 0 0 0 26 207 15 0 0
CDI 0 0 0 0 267 1398 307 0
VCDI 0 0 0 0 0 214 2005 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 63 710 18 33 0 0 0 0
OW 1 85 23 43 1 0 0 0
VODI 0 45 19 72 53 0 0 0
ODI 0 9 13 41 156 63 0 0
CDI 0 0 0 36 294 1423 1713 0
VCDI 0 0 0 0 0 141 599 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 0 203 22 4 0 5 0 0
OW 0 7 48 44 5 24 0 0
VODI 0 0 5 154 120 34 0 0
ODI 0 0 0 84 1090 90 0 0
CDI 0 0 0 21 503 3083 72 0
VCDI 0 0 0 0 0 239 1389 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 173 22 4 12 31 0 0
OW 0 22 22 34 54 35 0 0
VODI 0 11 13 82 171 25 0 0
ODI 0 4 16 98 515 77 0 0
CDI 0 0 2 89 963 2227 430 0
VCDI 0 0 0 0 3 1080 1031 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 0 365 106 150 9 0 0 0
OW 0 5 45 262 50 0 0 0
VODI 0 0 2 338 302 16 0 0
ODI 0 0 0 58 998 210 0 0
CDI 0 0 0 0 132 1578 18 0
VCDI 0 0 0 0 0 324 358 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 289 84 224 20 6 0 0
OW 0 65 30 235 135 49 0 0
VODI 0 16 35 213 386 95 0 0
ODI 0 0 4 95 624 272 0 0
CDI 0 0 0 41 326 948 18 0
VCDI 0 0 0 0 0 758 358 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 39 1581 253 295 30 0 0 0
OW 0 28 38 330 69 0 0 0
VODI 0 0 0 330 293 4 0 0
ODI 0 0 0 19 1011 115 0 0
CDI 0 0 0 0 351 1245 82 0
VCDI 0 0 0 0 2 33 183 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 39 1516 223 423 82 0 0 0
OW 0 54 37 290 147 7 0 0
VODI 0 39 31 246 567 143 0 0
ODI 0 0 0 14 477 188 0 0
CDI 0 0 0 1 471 1022 175 0
VCDI 0 0 0 0 12 37 90 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 9157 1861 74 19 0 0 0 0
OW 0 3 10 53 8 0 0 0
VODI 0 0 0 107 10 0 0 0
ODI 0 0 0 12 17 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 9157 1853 53 14 0 0 0 0
OW 0 11 30 44 5 0 0 0
VODI 0 0 1 97 8 0 0 0
ODI 0 0 0 35 22 0 0 0
CDI 0 0 0 1 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 5299 2608 195 654 3 0 0 0
OW 0 0 13 236 27 0 0 0
VODI 0 0 0 295 216 0 0 0
ODI 0 0 0 55 778 7 0 0
CDI 0 0 0 21 702 345 34 0
VCDI 0 0 0 0 0 1 207 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5299 2608 207 808 25 0 0 0
OW 0 0 1 247 72 0 0 0
VODI 0 0 0 136 319 0 0 0
ODI 0 0 0 4 381 1 0 0
CDI 0 0 0 66 929 348 126 0
VCDI 0 0 0 0 0 4 115 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 8293 3522 258 656 43 0 0 0
OW 0 1 6 111 26 0 0 0
VODI 0 0 0 59 4 0 0 0
ODI 0 0 0 5 4 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 8293 3521 258 766 66 0 0 0
OW 0 2 6 48 5 0 0 0
VODI 0 0 0 17 6 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 13 1469 256 541 53 0 0 0
OW 0 0 3 257 91 1 4 0
VODI 0 0 0 223 337 2 9 0
ODI 0 0 0 13 1178 158 11 0
CDI 0 0 0 0 108 986 41 0
VCDI 0 0 0 0 0 4 45 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 1469 256 725 139 0 6 0
OW 0 0 3 223 274 15 7 0
VODI 0 0 0 75 593 103 15 0
ODI 0 0 0 11 639 668 22 0
CDI 0 0 0 0 122 364 60 0
VCDI 0 0 0 0 0 1 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 529 4113 342 1335 186 4 0 0
OW 0 6 10 563 67 10 0 0
VODI 0 0 0 374 295 14 0 0
ODI 0 0 0 0 264 18 7 0
CDI 0 0 0 0 12 86 37 0
VCDI 0 0 0 0 0 59 256 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 529 4087 331 1835 290 23 0 0
OW 0 27 20 397 359 17 0 0
VODI 0 5 1 33 116 18 11 0
ODI 0 0 0 7 23 21 31 0
CDI 0 0 0 0 34 51 86 0
VCDI 0 0 0 0 2 61 172 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 15551 3292 350 657 6 0 0 0
OW 0 0 5 97 24 0 0 0
VODI 0 0 0 40 109 0 0 0
ODI 0 0 0 1 77 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 15551 3292 355 731 20 0 0 0
OW 0 0 0 57 52 0 0 0
VODI 0 0 0 7 143 0 0 0
ODI 0 0 0 0 1 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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