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: 2024-07-04

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: 2024-07-08

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 45 0 0 0 0 0 0
OW 0 234 79 51 1 0 0 0
VODI 0 12 15 583 172 4 0 0
ODI 0 0 0 68 1462 92 0 0
CDI 0 0 0 1 1684 19845 508 0
VCDI 0 0 0 0 155 9783 2108 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 33 0 0 0 0 0 0
OW 0 63 26 36 3 0 0 0
VODI 0 92 27 286 159 28 0 0
ODI 0 103 37 283 628 515 0 0
CDI 0 0 4 98 2189 14200 1061 0
VCDI 0 0 0 0 495 14981 1555 0

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 246 21 0 0 0 0 0 0
OW 9 33 0 3 1 0 0 0
VODI 6 15 0 43 22 1 0 0
ODI 7 4 0 6 38 24 0 0
CDI 17 0 2 34 52 951 0 0
VCDI 3 0 0 33 250 1278 20 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 249 19 0 0 0 0 0 0
OW 6 22 0 21 26 1 0 0
VODI 0 18 0 24 19 2 0 0
ODI 0 14 0 5 13 46 0 0
CDI 23 0 2 10 47 727 0 0
VCDI 10 0 0 59 258 1478 20 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 196 886 2 0 0 0 0 0
OW 0 320 139 68 0 0 0 0
VODI 0 1 8 467 59 0 0 0
ODI 0 0 0 39 3256 99 0 0
CDI 0 0 0 0 332 3943 0 0
VCDI 0 0 0 0 0 163 0 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 196 686 4 0 0 0 0 0
OW 0 380 64 58 0 0 0 0
VODI 0 127 72 352 252 41 0 0
ODI 0 14 9 155 2322 285 0 0
CDI 0 0 0 9 1067 3216 0 0
VCDI 0 0 0 0 6 663 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 151 742 0 1 0 0 0 0
OW 0 199 107 38 0 0 0 0
VODI 0 0 10 352 41 0 0 0
ODI 0 0 0 24 1179 88 0 0
CDI 0 0 0 0 577 2144 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 150 657 0 7 0 0 0 0
OW 1 231 35 33 3 0 0 0
VODI 0 53 76 187 61 31 0 0
ODI 0 0 6 135 408 217 0 0
CDI 0 0 0 53 1322 1864 0 0
VCDI 0 0 0 0 3 120 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 0 209 4 7 4 0 0 0
OW 0 192 53 35 15 0 0 0
VODI 0 8 31 856 121 0 0 0
ODI 0 1 0 350 1433 74 0 0
CDI 0 0 0 48 1308 2153 0 0
VCDI 0 0 0 2 229 91 0 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 189 6 15 8 0 0 0
OW 0 128 17 48 60 0 0 0
VODI 0 51 45 346 147 0 0 0
ODI 0 32 13 239 852 243 0 0
CDI 0 10 7 545 871 1115 0 0
VCDI 0 0 0 105 1172 960 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 28 1754 48 6 0 0 0 0
OW 3 381 300 214 0 0 0 0
VODI 0 0 3 1145 128 0 0 0
ODI 0 0 0 14 963 46 0 0
CDI 0 0 0 2 40 224 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 22 1463 69 29 0 0 0 0
OW 8 613 185 392 5 0 0 0
VODI 1 54 97 937 460 0 0 0
ODI 0 5 0 23 479 78 0 0
CDI 0 0 0 0 185 192 0 0
VCDI 0 0 0 0 2 0 0 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 1 1209 41 62 11 0 0 0
OW 0 579 247 167 0 0 0 0
VODI 0 7 22 1348 178 0 0 0
ODI 0 0 0 256 1503 8 0 0
CDI 0 0 0 10 602 41 0 0
VCDI 0 0 0 8 1 16 0 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1 993 41 61 11 0 0 0
OW 0 623 124 213 5 0 0 0
VODI 0 139 118 714 243 0 0 0
ODI 0 39 25 406 550 0 0 0
CDI 0 1 2 447 1466 48 0 0
VCDI 0 0 0 10 20 17 0 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 9528 1708 18 1 0 0 0 0
OW 0 63 0 0 0 0 0 0
VODI 0 4 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 9527 1567 17 1 0 0 0 0
OW 1 183 1 0 0 0 0 0
VODI 0 25 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 7028 2288 26 4 0 0 0 0
OW 0 183 152 120 0 0 0 0
VODI 0 0 19 470 44 0 0 0
ODI 0 0 0 33 608 45 0 0
CDI 0 0 0 0 105 541 23 0
VCDI 0 0 0 0 0 0 7 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 7028 2184 50 15 0 0 0 0
OW 0 229 91 202 5 0 0 0
VODI 0 58 56 361 160 2 0 0
ODI 0 0 0 49 482 221 4 0
CDI 0 0 0 0 110 363 26 0
VCDI 0 0 0 0 0 0 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 8660 3153 45 10 0 0 0 0
OW 0 135 122 169 0 0 0 0
VODI 0 3 11 366 153 0 0 0
ODI 0 0 0 8 152 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 8660 2968 42 23 0 0 0 0
OW 0 315 104 250 34 0 0 0
VODI 0 8 32 274 197 0 0 0
ODI 0 0 0 6 74 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 50 1771 2 0 0 0 0 0
OW 0 669 219 89 0 2 0 0
VODI 0 2 29 695 110 5 0 0
ODI 0 0 0 125 1560 84 0 0
CDI 0 0 0 5 181 205 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 39 1533 2 0 0 0 0 0
OW 11 603 42 26 5 4 0 0
VODI 0 244 146 386 94 5 0 0
ODI 0 57 42 329 712 48 0 0
CDI 0 5 18 173 1038 239 0 0
VCDI 0 0 0 0 2 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 3129 2307 24 20 3 0 0 0
OW 0 649 167 204 46 0 0 0
VODI 0 9 12 689 276 2 0 0
ODI 0 0 0 59 758 54 0 0
CDI 0 0 0 1 44 85 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 3129 2092 26 50 29 0 0 0
OW 0 768 83 312 150 0 0 0
VODI 0 94 86 471 551 65 0 0
ODI 0 11 8 107 249 20 0 0
CDI 0 0 0 33 148 56 0 0
VCDI 0 0 0 0 0 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 14265 1034 2 0 0 0 0 0
OW 17 115 37 34 0 0 0 0
VODI 0 0 2 100 29 0 0 0
ODI 0 0 0 5 53 12 0 0
CDI 0 0 0 0 4 37 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 14201 981 2 4 0 0 0 0
OW 81 141 22 40 5 0 0 0
VODI 0 27 17 91 62 5 0 0
ODI 0 0 0 4 17 35 0 0
CDI 0 0 0 0 2 9 0 0
VCDI 0 0 0 0 0 0 0 0


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