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: 2023-10-26

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: 2023-10-30

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 0 124 5 5 0 0 0 0
OW 0 52 43 55 8 0 0 0
VODI 0 1 15 244 62 0 0 0
ODI 0 0 0 157 214 32 0 0
CDI 0 0 0 10 275 406 51 0
VCDI 0 0 0 0 64 942 10351 23786
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 67 0 4 10 0 0 0
OW 0 94 16 46 21 0 0 0
VODI 0 16 36 105 70 3 0 0
ODI 0 0 10 189 87 46 0 0
CDI 0 0 1 125 225 331 91 0
VCDI 0 0 0 2 210 1000 10311 23786

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 401 234 19 4 0 0 0 0
OW 0 22 25 44 9 0 0 0
VODI 0 0 2 60 78 12 0 0
ODI 0 0 0 7 171 133 0 0
CDI 0 0 0 0 21 232 34 0
VCDI 0 0 0 0 0 229 1149 233
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 401 209 30 33 15 0 0 0
OW 0 47 16 61 70 41 0 0
VODI 0 0 0 16 84 85 0 0
ODI 0 0 0 5 86 51 0 0
CDI 0 0 0 0 23 177 45 0
VCDI 0 0 0 0 1 252 1138 233

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 423 1990 122 92 0 0 0 0
OW 0 79 95 235 23 0 0 0
VODI 0 0 10 338 234 2 0 0
ODI 0 0 0 19 392 86 0 0
CDI 0 0 0 0 88 514 0 0
VCDI 0 0 0 0 0 1402 3343 491
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 423 1947 130 139 6 0 0 0
OW 0 94 76 227 52 0 0 0
VODI 0 26 19 252 213 18 0 0
ODI 0 2 2 61 287 103 0 0
CDI 0 0 0 5 177 283 9 0
VCDI 0 0 0 0 2 1600 3334 491

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1735 1792 95 121 0 0 0 0
OW 0 14 29 178 11 0 0 0
VODI 0 0 0 154 96 0 0 0
ODI 0 0 0 4 218 2 0 0
CDI 0 0 0 0 50 286 0 0
VCDI 0 0 0 0 0 283 585 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1735 1777 82 219 12 0 0 0
OW 0 27 37 156 80 2 0 0
VODI 0 2 5 79 198 34 0 0
ODI 0 0 0 3 79 114 0 0
CDI 0 0 0 0 6 207 13 0
VCDI 0 0 0 0 0 214 572 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 20 0 0 0 0 0 0
OW 0 6 8 11 0 0 0 0
VODI 0 0 0 199 27 0 0 0
ODI 0 0 0 17 494 68 3 0
CDI 0 0 0 0 337 1403 46 0
VCDI 0 0 0 0 0 2036 2172 377
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 44 2 0 0 0
OW 0 16 0 103 89 3 0 0
VODI 0 9 8 55 290 142 0 0
ODI 0 0 0 25 104 337 18 0
CDI 0 0 0 0 121 941 370 0
VCDI 0 0 0 0 252 2084 1833 377

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 5 12 9
VCDI 0 0 0 0 0 7 890 4376
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 4 5 5
CDI 0 0 0 0 0 1 46 124
VCDI 0 0 0 0 0 7 851 4256

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1051 1296 47 54 1 0 0 0
OW 0 56 31 168 125 9 0 0
VODI 0 0 0 217 346 40 0 0
ODI 0 0 0 15 249 530 0 0
CDI 0 0 0 0 48 1100 14 0
VCDI 0 0 0 0 0 540 380 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1051 1263 55 150 94 8 0 0
OW 0 86 20 237 330 222 0 0
VODI 0 3 3 65 291 709 0 0
ODI 0 0 0 2 45 492 14 0
CDI 0 0 0 0 9 408 9 0
VCDI 0 0 0 0 0 380 371 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 9310 1556 34 21 0 0 0 0
OW 3 84 34 108 11 0 0 0
VODI 0 0 0 63 63 0 0 0
ODI 0 0 0 0 35 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 9300 1325 44 56 0 0 0 0
OW 13 306 24 128 48 0 0 0
VODI 0 9 0 8 54 0 0 0
ODI 0 0 0 0 7 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 6002 2197 36 39 0 0 0 0
OW 0 176 70 68 24 0 0 0
VODI 0 10 27 197 122 3 0 0
ODI 0 0 3 62 182 72 0 0
CDI 0 0 0 0 88 397 54 1
VCDI 0 0 0 0 0 294 1540 32
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6002 2170 44 42 1 0 0 0
OW 0 149 42 78 31 2 0 0
VODI 0 44 28 120 100 28 0 0
ODI 0 19 13 64 86 48 11 0
CDI 0 1 9 58 186 357 334 3
VCDI 0 0 0 4 12 331 1249 30

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11339 1368 49 69 39 4 0 0
OW 0 2 6 49 54 1 0 0
VODI 0 0 0 5 2 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 11339 1369 50 63 37 4 0 0
OW 0 1 5 51 50 1 0 0
VODI 0 0 0 9 8 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 3489 944 44 74 14 0 0 0
OW 0 79 36 172 81 0 0 0
VODI 0 0 7 156 130 0 0 0
ODI 0 0 0 33 184 0 0 0
CDI 0 0 0 3 196 29 1 0
VCDI 0 0 0 0 2 50 79 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3460 919 50 179 114 0 0 0
OW 29 104 37 184 91 0 0 0
VODI 0 0 0 41 117 0 0 0
ODI 0 0 0 21 102 0 0 0
CDI 0 0 0 13 174 29 0 0
VCDI 0 0 0 0 9 50 80 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 7981 501 8 18 0 0 0 0
OW 0 1 1 26 0 0 0 0
VODI 0 0 0 2 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 7981 490 9 24 0 0 0 0
OW 0 12 0 19 0 0 0 0
VODI 0 0 0 3 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

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0


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