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: 2020-05-14

Model: ARC MFC - TOPAZ

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2020-05-18

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 41 3 34 19 5 0 0
OW 0 47 5 37 6 20 1 0
VODI 0 47 1 26 17 19 9 0
ODI 0 24 8 28 18 15 25 0
CDI 0 1 5 72 162 158 90 0
VCDI 0 0 0 1 87 560 7823 27488
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 29 5 51 21 13 0 0
OW 0 33 1 24 7 24 6 0
VODI 0 41 2 15 17 11 36 0
ODI 0 37 1 10 15 9 37 0
CDI 0 20 13 74 76 130 105 0
VCDI 0 0 0 24 173 590 7764 27488

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 3 0 0 0 0
ODI 0 0 0 9 7 0 0 0
CDI 0 0 0 13 35 35 15 0
VCDI 0 0 0 0 6 273 1503 1234
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 3 0 0 0 0
CDI 0 0 0 14 17 14 14 0
VCDI 0 0 0 8 31 294 1504 1234

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 1 0 0 0
VODI 0 0 0 6 24 2 0 0
ODI 0 0 0 2 68 5 0 0
CDI 0 0 0 0 188 120 0 0
VCDI 0 0 0 0 9 450 6119 2988
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 13 1 0 0
ODI 0 0 0 6 32 6 0 0
CDI 0 0 0 1 175 84 0 0
VCDI 0 0 0 0 70 486 6119 2988

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 71 3 39 80 10 0 0
OW 0 110 6 90 56 2 0 0
VODI 0 24 6 166 91 0 0 0
ODI 0 2 1 37 67 4 0 0
CDI 0 0 0 46 149 110 2 0
VCDI 0 0 0 2 48 237 2678 1517
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 39 3 61 104 10 0 0
OW 0 46 4 68 65 2 0 0
VODI 0 73 4 91 39 0 0 0
ODI 0 20 2 72 21 3 0 0
CDI 0 21 1 54 126 35 0 0
VCDI 0 8 2 34 136 313 2680 1517

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 7 0 0 0
VODI 0 0 0 59 51 22 0 0
ODI 0 0 0 55 78 28 0 0
CDI 0 0 0 38 181 244 36 0
VCDI 0 0 0 27 294 969 3713 1444
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 6 0 0 0
VODI 0 0 0 6 26 13 0 0
ODI 0 0 0 48 48 33 1 0
CDI 0 0 0 73 166 228 145 0
VCDI 0 0 0 52 365 989 3603 1444

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 1 0 24 3 0 0 0
VODI 0 2 5 54 38 13 6 0
ODI 0 7 3 17 107 20 10 0
CDI 0 0 2 105 322 137 64 8
VCDI 0 0 0 34 251 1139 2389 565
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 14 1 2 2 0
VODI 0 1 4 32 22 13 9 0
ODI 0 5 2 24 71 22 43 4
CDI 0 4 4 57 276 114 198 6
VCDI 0 0 0 107 351 1158 2217 563

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 851 34 177 9 0 0 0
OW 0 191 26 214 33 0 0 0
VODI 0 26 9 206 176 3 1 0
ODI 0 12 0 40 369 87 0 0
CDI 0 13 3 41 175 1163 87 0
VCDI 0 0 0 4 58 514 1809 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 784 38 294 16 0 0 0
OW 0 130 12 136 76 0 0 0
VODI 0 85 13 98 178 7 1 0
ODI 0 37 4 61 220 107 0 0
CDI 0 45 2 45 185 893 240 0
VCDI 0 12 3 48 145 760 1656 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 5289 3271 21 68 0 0 0 0
OW 0 277 18 81 14 0 0 0
VODI 0 55 19 306 235 2 0 0
ODI 0 0 0 25 589 83 0 0
CDI 0 0 0 2 54 280 94 0
VCDI 0 0 0 0 0 25 523 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5289 3136 20 67 6 0 0 0
OW 0 216 11 72 44 0 0 0
VODI 0 198 14 151 245 21 0 0
ODI 0 51 12 130 393 155 20 0
CDI 0 2 1 62 191 129 105 0
VCDI 0 0 0 0 13 85 492 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 4333 3329 47 320 134 31 2 0
OW 0 52 8 73 63 22 6 0
VODI 0 26 5 58 150 32 19 0
ODI 0 3 3 35 313 85 26 0
CDI 0 0 0 12 249 835 189 0
VCDI 0 0 0 0 0 511 725 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4333 3317 46 333 166 59 11 0
OW 0 42 7 54 167 31 14 0
VODI 0 34 3 41 225 116 42 0
ODI 0 16 6 33 78 94 65 0
CDI 0 1 1 37 252 547 147 0
VCDI 0 0 0 0 21 669 688 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 9140 3303 29 243 64 0 0 0
OW 0 0 0 2 66 0 0 0
VODI 0 0 0 0 67 0 0 0
ODI 0 0 0 0 74 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 9140 3303 29 245 126 0 0 0
OW 0 0 0 0 65 0 0 0
VODI 0 0 0 0 80 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 0 827 22 28 0 0 0 0
OW 0 51 17 112 6 0 0 0
VODI 0 3 3 122 66 0 0 0
ODI 0 1 0 14 235 13 0 0
CDI 0 0 0 15 308 702 209 0
VCDI 0 0 0 11 37 684 2317 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 689 8 23 3 0 0 0
OW 0 87 11 39 10 0 0 0
VODI 0 88 16 82 40 0 0 0
ODI 0 17 7 87 81 25 0 0
CDI 0 1 0 43 305 611 378 0
VCDI 0 0 0 28 213 763 2148 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 0 169 21 100 5 0 0 0
OW 0 7 4 158 39 2 0 0
VODI 0 14 0 179 330 47 0 0
ODI 0 3 0 31 413 263 27 0
CDI 0 0 0 0 296 1111 105 2
VCDI 0 0 0 0 79 1675 3433 74
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 162 18 133 31 0 0 0
OW 0 10 4 71 78 14 0 0
VODI 0 16 3 101 236 101 13 0
ODI 0 5 0 106 283 304 82 1
CDI 0 0 0 44 325 828 347 43
VCDI 0 0 0 13 209 1851 3123 32

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14383 3839 55 227 184 13 0 0
OW 0 1 3 55 262 34 0 0
VODI 0 0 0 6 135 64 9 0
ODI 0 0 0 0 102 102 27 0
CDI 0 0 0 0 13 86 209 0
VCDI 0 0 0 0 0 5 395 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14383 3840 57 267 325 71 17 0
OW 0 0 1 19 203 104 36 0
VODI 0 0 0 2 168 63 85 0
ODI 0 0 0 0 0 59 239 0
CDI 0 0 0 0 0 7 260 0
VCDI 0 0 0 0 0 0 3 0


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