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 2257 78 91 0 0 0 0
OW 0 165 48 79 19 1 0 0
VODI 0 51 29 114 110 10 0 0
ODI 0 10 16 114 80 53 0 0
CDI 0 0 5 183 318 608 38 0
VCDI 0 0 0 3 248 4175 12139 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 995 119 10 45 24 0 0 0
OW 7 111 16 39 68 7 0 0
VODI 0 0 0 31 123 77 0 0
ODI 0 0 0 0 64 88 0 0
CDI 0 0 0 0 61 17 1 0
VCDI 0 0 0 0 52 141 788 235
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 2046 75 64 0 0 0 0
OW 0 187 44 183 27 0 0 0
VODI 0 42 52 196 167 11 0 0
ODI 0 0 0 88 156 104 0 0
CDI 0 0 0 9 130 348 102 0
VCDI 0 0 0 0 14 199 2317 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 2139 144 183 20 0 0 0
OW 0 138 53 192 79 7 0 0
VODI 0 13 17 178 123 26 0 0
ODI 0 0 6 43 137 69 0 0
CDI 0 0 0 25 127 147 0 0
VCDI 0 0 0 4 54 596 432 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 31 3 0
OW 0 0 0 0 0 195 73 0
VODI 0 0 0 0 8 338 132 0
ODI 0 0 0 0 11 438 65 0
CDI 0 0 0 0 21 690 153 0
VCDI 0 0 0 0 174 1808 2833 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 2 0 0
OW 0 0 0 0 11 31 0 0
VODI 0 0 0 0 68 91 26 0
ODI 0 0 0 0 17 362 50 0
CDI 0 0 0 0 10 1278 196 0
VCDI 0 0 0 0 0 1596 1561 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 1384 58 132 154 21 0 0
OW 0 92 34 101 224 160 0 0
VODI 0 0 3 67 102 121 14 0
ODI 0 0 0 4 30 78 31 0
CDI 0 0 0 0 26 156 63 0
VCDI 0 0 0 0 27 478 81 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 2333 45 32 0 0 0 0
OW 0 80 59 71 59 31 0 0
VODI 0 14 52 105 44 74 0 0
ODI 0 2 10 104 53 35 0 0
CDI 0 0 7 81 149 199 0 0
VCDI 0 0 0 27 90 580 474 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 661 62 28 0 0 0 0
OW 0 32 20 38 0 0 0 0
VODI 0 9 7 64 19 0 0 0
ODI 0 2 0 7 45 0 0 0
CDI 0 0 0 4 17 4 5 0
VCDI 0 0 0 0 0 0 82 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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