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: 2024-10-24

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: 2024-10-28

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 542 2198 62 45 0 0 0 0
OW 0 280 98 135 1 0 0 0
VODI 0 5 16 256 56 0 0 0
ODI 0 0 0 112 172 4 0 0
CDI 0 0 0 36 390 1085 51 0
VCDI 0 0 0 0 156 3758 12126 15318
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 542 2118 63 105 4 0 0 0
OW 0 296 54 68 27 0 0 0
VODI 0 65 37 124 117 10 0 0
ODI 0 4 22 117 79 66 0 0
CDI 0 0 0 167 295 515 31 0
VCDI 0 0 0 3 253 4256 12146 15318

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 1001 165 15 4 1 0 0 0
OW 1 65 8 33 1 0 0 0
VODI 0 0 3 63 53 7 0 0
ODI 0 0 0 15 187 30 0 0
CDI 0 0 0 0 145 228 35 0
VCDI 0 0 0 0 5 65 754 235
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 989 109 9 40 25 0 0 0
OW 13 120 16 29 74 5 0 0
VODI 0 1 1 46 124 95 0 0
ODI 0 0 0 0 49 72 0 0
CDI 0 0 0 0 50 14 0 0
VCDI 0 0 0 0 70 144 789 235

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 708 2023 19 9 0 0 0 0
OW 0 250 112 95 0 0 0 0
VODI 0 2 40 377 46 2 0 0
ODI 0 0 0 59 324 101 14 0
CDI 0 0 0 0 124 339 199 0
VCDI 0 0 0 0 0 220 2206 2709
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 708 1791 29 28 0 0 0 0
OW 0 384 82 170 12 0 0 0
VODI 0 100 59 224 172 2 0 0
ODI 0 0 1 111 188 196 1 0
CDI 0 0 0 7 122 330 218 0
VCDI 0 0 0 0 0 134 2200 2709

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 701 2196 66 16 0 0 0 0
OW 0 94 144 258 12 0 0 0
VODI 0 0 10 330 114 0 0 0
ODI 0 0 0 21 330 114 0 0
CDI 0 0 0 0 84 404 0 0
VCDI 0 0 0 0 0 327 432 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 701 2040 79 89 11 0 0 0
OW 0 229 101 197 46 6 0 0
VODI 0 21 36 258 136 29 0 0
ODI 0 0 4 58 187 95 0 0
CDI 0 0 0 22 120 199 11 0
VCDI 0 0 0 1 40 516 421 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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 1 0 0 0
ODI 0 0 0 0 11 227 66 0
CDI 0 0 0 0 91 1788 253 0
VCDI 0 0 0 0 111 1485 2940 251
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 12 4 0
OW 0 0 0 0 0 203 49 0
VODI 0 0 0 0 14 379 138 0
ODI 0 0 0 0 8 460 77 0
CDI 0 0 0 0 24 763 178 0
VCDI 0 0 0 0 168 1683 2813 251

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 5 1 0 0
ODI 0 0 0 0 72 237 5 0
CDI 0 0 0 0 29 1896 150 0
VCDI 0 0 0 0 0 1226 1678 0
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 14 31 0 0
VODI 0 0 0 0 62 82 28 0
ODI 0 0 0 0 20 431 67 0
CDI 0 0 0 0 10 1311 195 0
VCDI 0 0 0 0 0 1505 1543 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 2676 1402 33 48 13 0 0 0
OW 0 69 46 98 86 0 0 0
VODI 0 5 16 126 153 27 0 0
ODI 0 0 0 32 261 207 2 0
CDI 0 0 0 0 29 313 42 0
VCDI 0 0 0 0 21 467 145 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2676 1369 52 137 264 86 0 0
OW 0 91 38 128 186 164 4 0
VODI 0 16 5 38 41 96 20 0
ODI 0 0 0 1 30 79 37 0
CDI 0 0 0 0 21 167 71 0
VCDI 0 0 0 0 21 422 57 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 6886 2329 41 23 0 0 0 0
OW 0 99 115 89 37 15 0 0
VODI 0 1 13 195 125 61 0 0
ODI 0 0 4 43 67 157 0 0
CDI 0 0 0 54 99 171 0 0
VCDI 0 0 0 16 67 515 474 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6886 2289 40 43 0 0 0 0
OW 0 109 60 70 64 30 0 0
VODI 0 26 42 92 41 76 0 0
ODI 0 5 22 97 43 40 0 0
CDI 0 0 9 95 156 177 0 0
VCDI 0 0 0 23 91 596 474 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 12613 374 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 12613 374 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 4697 674 61 15 0 0 0 0
OW 0 25 26 41 0 0 0 0
VODI 0 5 2 63 15 0 0 0
ODI 0 0 0 20 51 0 0 0
CDI 0 0 0 2 15 4 6 0
VCDI 0 0 0 0 0 0 81 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4697 653 62 24 0 0 0 0
OW 0 41 19 39 0 0 0 0
VODI 0 8 8 70 18 0 0 0
ODI 0 2 0 4 49 0 0 0
CDI 0 0 0 4 14 4 6 0
VCDI 0 0 0 0 0 0 81 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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