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: 2024-10-17

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: 2024-10-21

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 682 2082 15 0 0 0 0 0
OW 0 527 143 77 0 0 0 0
VODI 0 54 51 194 39 0 0 0
ODI 0 10 19 166 87 32 12 0
CDI 0 1 4 151 408 1054 38 0
VCDI 0 0 0 24 308 4179 11029 15516
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 682 1960 45 29 0 0 0 0
OW 0 284 30 71 11 0 0 0
VODI 0 249 31 47 61 0 0 0
ODI 0 84 52 70 60 6 0 0
CDI 0 90 59 246 266 219 9 0
VCDI 0 7 15 149 444 5040 11070 15516

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 1185 506 40 54 5 0 0 0
OW 0 42 9 20 4 0 0 0
VODI 0 14 3 86 5 0 0 0
ODI 0 2 1 24 30 0 0 0
CDI 0 0 0 4 14 6 0 0
VCDI 0 0 0 0 60 608 397 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1185 484 29 22 0 0 0 0
OW 0 46 14 48 9 0 0 0
VODI 0 20 8 22 3 0 0 0
ODI 0 8 1 67 10 0 0 0
CDI 0 6 1 27 29 0 0 0
VCDI 0 0 0 2 67 614 397 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 2434 1751 7 20 0 0 0 0
OW 0 335 103 96 11 0 0 0
VODI 0 8 12 227 106 1 0 0
ODI 0 0 0 19 308 75 13 0
CDI 0 0 0 0 117 683 59 0
VCDI 0 0 0 0 0 383 2944 266
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2434 1693 31 41 0 0 0 0
OW 0 276 62 136 55 0 0 0
VODI 0 125 29 156 306 58 0 0
ODI 0 0 0 29 123 153 5 0
CDI 0 0 0 0 58 402 45 0
VCDI 0 0 0 0 0 529 2966 266

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2134 1640 1 5 0 0 0 0
OW 0 722 148 94 0 0 0 0
VODI 0 3 5 290 59 0 0 0
ODI 0 0 0 31 180 20 0 0
CDI 0 0 0 14 202 22 0 0
VCDI 0 0 0 0 72 11 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2133 1439 2 4 0 0 0 0
OW 1 509 47 47 0 0 0 0
VODI 0 358 75 160 29 0 0 0
ODI 0 52 27 120 56 0 0 0
CDI 0 7 3 88 147 29 0 0
VCDI 0 0 0 15 281 24 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 1778 189 226 43 0 0 0
OW 0 334 227 332 137 0 0 0
VODI 0 18 19 336 277 52 0 0
ODI 0 0 0 28 699 175 0 0
CDI 0 0 0 0 361 680 8 0
VCDI 0 0 0 0 29 383 893 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1479 163 279 239 53 0 0
OW 0 500 179 310 136 72 0 0
VODI 0 146 85 304 305 118 0 0
ODI 0 5 8 29 318 141 0 0
CDI 0 0 0 0 240 333 0 0
VCDI 0 0 0 0 308 573 901 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 0 121 31 152 42 14 0 0
OW 0 36 5 171 80 57 0 0
VODI 0 1 0 99 441 372 1 0
ODI 0 0 0 20 522 530 25 0
CDI 0 0 0 0 223 891 61 0
VCDI 0 0 0 0 1 266 1132 5
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 127 34 262 255 236 1 0
OW 0 25 2 114 493 877 36 0
VODI 0 6 0 54 407 484 50 0
ODI 0 0 0 12 125 184 7 0
CDI 0 0 0 0 29 157 107 0
VCDI 0 0 0 0 0 192 1018 5

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3129 1757 126 312 7 0 0 0
OW 0 47 15 139 159 3 0 0
VODI 0 3 2 60 166 28 0 0
ODI 0 0 0 6 160 70 0 0
CDI 0 0 0 1 64 57 0 0
VCDI 0 0 0 0 3 3 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 1747 129 398 156 7 0 0
OW 0 58 12 105 191 49 0 0
VODI 0 2 2 13 147 68 0 0
ODI 0 0 0 2 62 31 0 0
CDI 0 0 0 0 3 6 0 0
VCDI 0 0 0 0 0 0 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 11322 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 11322 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7433 2231 8 4 2 0 0 0
OW 0 167 85 45 16 0 0 0
VODI 0 6 28 168 85 0 0 0
ODI 0 0 0 40 151 5 0 0
CDI 0 0 0 31 101 267 3 0
VCDI 0 0 0 0 4 355 461 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7433 2221 14 4 0 0 0 0
OW 0 147 50 68 37 0 0 0
VODI 0 34 34 94 95 0 0 0
ODI 0 2 23 68 91 9 0 0
CDI 0 0 0 54 119 148 1 0
VCDI 0 0 0 0 17 470 463 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 12987 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 12987 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5029 587 7 3 0 0 0 0
OW 0 17 18 18 0 0 0 0
VODI 0 2 1 18 0 0 0 0
ODI 0 0 0 5 2 0 0 0
CDI 0 0 0 1 5 5 0 0
VCDI 0 0 0 0 0 73 12 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5029 580 13 2 0 0 0 0
OW 0 24 12 28 0 0 0 0
VODI 0 2 1 11 1 0 0 0
ODI 0 0 0 3 2 0 0 0
CDI 0 0 0 1 4 4 0 0
VCDI 0 0 0 0 0 74 12 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 8538 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 8538 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

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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