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: 2024-03-07

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: 2024-03-11

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 1 0 0 0 0
OW 0 0 3 21 0 0 0 0
VODI 0 0 0 107 7 0 0 0
ODI 0 0 0 34 81 0 0 0
CDI 0 0 0 7 105 299 35 0
VCDI 0 0 0 0 0 212 4576 31414
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 0 0 0 0
OW 0 0 3 30 0 0 0 0
VODI 0 0 0 67 6 0 0 0
ODI 0 0 0 53 43 0 0 0
CDI 0 0 0 19 144 342 263 0
VCDI 0 0 0 0 0 169 4348 31414

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 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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 353 2766
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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 353 2766

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 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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 9978
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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 9978

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 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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 34 1019 4600
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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 34 1019 4600

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 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 7224
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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 7224

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 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 5299
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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 5299

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 28 0 0 0 0 0 0
OW 0 105 12 2 0 0 0 0
VODI 0 24 7 13 0 0 0 0
ODI 0 3 10 10 0 0 0 0
CDI 0 0 5 53 28 8 0 0
VCDI 0 0 0 26 74 259 2589 3061
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 7 0 0 0 0 0 0
OW 0 62 0 0 0 0 0 0
VODI 0 48 6 5 0 0 0 0
ODI 0 25 5 5 0 0 0 0
CDI 0 18 21 19 1 0 0 0
VCDI 0 0 2 75 101 267 2589 3061

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3026 3582 19 0 0 0 0 0
OW 0 299 202 99 2 0 0 0
VODI 0 8 41 489 62 0 0 0
ODI 0 1 0 88 489 28 0 0
CDI 0 0 0 4 170 836 65 0
VCDI 0 0 0 0 0 271 1541 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3026 3475 36 6 0 0 0 0
OW 0 290 145 146 1 0 0 0
VODI 0 112 66 385 156 11 0 0
ODI 0 11 11 103 346 208 4 0
CDI 0 2 4 38 209 683 898 0
VCDI 0 0 0 2 11 233 704 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 4467 2841 12 6 0 0 0 0
OW 11 316 120 63 1 0 0 0
VODI 0 2 28 361 38 0 0 0
ODI 0 0 0 86 261 6 0 0
CDI 0 0 0 0 211 966 31 0
VCDI 0 0 0 0 0 267 1320 282
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4478 2725 11 5 0 0 0 0
OW 0 283 67 63 1 0 0 0
VODI 0 112 43 193 33 0 0 0
ODI 0 37 34 177 136 37 0 0
CDI 0 2 5 78 341 948 60 0
VCDI 0 0 0 0 0 254 1291 282

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7843 3080 92 100 11 0 0 0
OW 0 148 51 106 19 0 0 0
VODI 0 12 21 162 48 7 0 0
ODI 0 0 4 88 170 15 1 0
CDI 0 0 0 8 202 298 11 0
VCDI 0 0 0 0 0 122 368 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7843 3033 69 84 19 3 0 0
OW 0 111 43 94 22 8 0 0
VODI 0 64 27 151 64 11 5 0
ODI 0 27 10 43 67 7 8 0
CDI 0 5 19 88 250 194 8 0
VCDI 0 0 0 4 28 219 359 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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 1 2 0 0 0
ODI 0 0 0 3 35 22 0 0
CDI 0 0 0 2 70 343 7 3
VCDI 0 0 0 0 3 208 2942 2162
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 2 0 0 0
VODI 0 0 0 0 11 8 0 0
ODI 0 0 0 0 13 23 0 0
CDI 0 0 0 6 70 227 132 8
VCDI 0 0 0 0 14 315 2817 2157

Hudson Bay:

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 0 0 0 0
CDI 0 0 0 0 0 11 5 2
VCDI 0 0 0 0 0 331 4410 3779
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 0 2 1 0
CDI 0 0 0 0 0 15 9 7
VCDI 0 0 0 0 0 325 4405 3774

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6168 4259 61 59 20 0 0 0
OW 60 241 100 195 16 0 0 0
VODI 2 17 16 289 143 0 0 0
ODI 0 0 1 95 316 41 0 0
CDI 0 0 0 3 317 856 0 0
VCDI 0 0 0 0 79 1360 1032 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6230 4023 53 65 29 0 0 0
OW 0 367 72 240 32 0 0 0
VODI 0 88 31 152 175 2 0 0
ODI 0 39 22 143 143 83 0 0
CDI 0 0 0 41 370 675 2 0
VCDI 0 0 0 0 142 1497 1030 0


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