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: 2020-05-21

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-05-25

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 64 4 57 21 0 0 0
OW 0 36 4 27 26 8 0 0
VODI 0 1 6 44 24 27 0 0
ODI 0 0 0 25 60 71 0 0
CDI 0 0 0 5 248 467 61 0
VCDI 0 0 0 0 22 4483 12988 18123
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 61 5 68 35 2 0 0
OW 0 29 1 5 19 32 0 0
VODI 0 11 8 23 15 55 2 0
ODI 0 0 0 41 31 77 11 0
CDI 0 0 0 21 204 344 106 0
VCDI 0 0 0 0 97 4546 12930 18123

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 2 0 0 0 0
OW 0 0 0 9 0 0 0 0
VODI 0 0 0 13 1 0 0 0
ODI 0 0 0 14 1 0 1 0
CDI 0 2 0 15 13 96 36 0
VCDI 0 0 0 6 23 427 1412 1062
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 2 0 0 0 0
OW 0 0 0 7 0 0 0 0
VODI 0 0 0 11 1 0 1 0
ODI 0 0 0 8 0 0 1 0
CDI 0 1 0 18 8 63 45 0
VCDI 0 1 0 13 29 460 1402 1062

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 0 0 0 0
VODI 0 0 0 0 26 11 0 0
ODI 0 0 0 0 107 48 0 0
CDI 0 0 0 0 178 702 28 0
VCDI 0 0 0 0 0 1938 6483 461
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 19 6 0 0
ODI 0 0 0 0 95 56 0 0
CDI 0 0 0 0 196 578 63 0
VCDI 0 0 0 0 1 2059 6448 461

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 292 20 108 27 1 0 0
OW 0 76 9 70 10 0 0 0
VODI 0 93 4 49 46 0 0 0
ODI 0 22 7 102 77 6 0 0
CDI 0 0 0 35 178 208 6 0
VCDI 0 0 0 0 40 852 2860 456
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 346 26 146 29 1 0 0
OW 0 37 3 36 14 0 0 0
VODI 0 45 3 26 42 1 0 0
ODI 0 36 3 46 38 24 0 0
CDI 0 19 5 99 203 149 21 0
VCDI 0 0 0 11 52 892 2845 456

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 6 2 1 0 0
VODI 0 5 1 60 48 0 13 0
ODI 0 4 0 51 59 9 34 0
CDI 0 1 2 65 253 222 51 0
VCDI 0 0 0 13 126 941 3766 1513
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 2 1 0 0
VODI 0 0 0 3 22 0 1 0
ODI 0 0 0 33 44 5 35 0
CDI 0 4 1 102 136 64 64 0
VCDI 0 6 2 57 284 1103 3764 1513

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 126 3 1 0 0 0 0
OW 0 41 12 26 0 0 0 0
VODI 0 6 2 63 67 0 0 0
ODI 0 4 2 38 143 17 4 0
CDI 0 0 0 31 527 546 140 0
VCDI 0 0 0 0 59 1411 2047 10
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 17 3 0 0 0 0 0
OW 0 24 2 2 2 0 0 0
VODI 0 53 0 13 31 1 0 0
ODI 0 59 7 34 77 6 14 0
CDI 0 24 7 100 439 435 309 4
VCDI 0 0 0 10 247 1532 1868 6

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 1524 34 135 32 0 0 0
OW 0 49 20 203 30 1 0 0
VODI 0 0 6 172 187 0 0 0
ODI 0 0 0 13 613 151 18 0
CDI 0 0 0 0 171 1201 238 0
VCDI 0 0 0 0 0 250 1283 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1462 36 204 47 1 0 0
OW 0 64 11 131 135 3 0 0
VODI 0 47 13 139 304 67 8 0
ODI 0 0 0 48 311 323 83 0
CDI 0 0 0 1 231 900 723 0
VCDI 0 0 0 0 5 309 725 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 5618 3439 48 344 26 0 0 0
OW 0 2 5 190 83 0 0 0
VODI 0 0 0 58 280 15 0 0
ODI 0 0 0 0 264 114 0 0
CDI 0 0 0 0 14 527 155 0
VCDI 0 0 0 0 0 3 146 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5618 3430 47 529 119 0 0 0
OW 0 11 6 38 283 15 0 0
VODI 0 0 0 24 193 166 0 0
ODI 0 0 0 1 67 286 81 0
CDI 0 0 0 0 5 192 207 0
VCDI 0 0 0 0 0 0 13 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 4679 3247 46 342 138 3 0 0
OW 0 37 8 89 79 8 2 0
VODI 0 2 3 81 129 29 16 0
ODI 0 0 0 21 268 102 24 0
CDI 0 0 0 6 270 793 327 0
VCDI 0 0 0 0 6 195 746 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4679 3199 39 347 204 43 9 0
OW 0 60 14 66 106 102 29 0
VODI 0 22 1 67 98 86 70 0
ODI 0 5 3 30 173 96 104 0
CDI 0 0 0 29 266 583 346 0
VCDI 0 0 0 0 43 220 557 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 10203 2311 23 119 81 0 0 0
OW 0 0 0 31 44 0 0 0
VODI 0 0 0 4 65 0 0 0
ODI 0 0 0 0 91 0 0 0
CDI 0 0 0 0 16 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 10203 2311 23 154 128 0 0 0
OW 0 0 0 0 157 0 0 0
VODI 0 0 0 0 12 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 1114 25 104 7 0 0 0
OW 0 59 18 162 13 0 0 0
VODI 0 4 0 167 319 0 4 0
ODI 0 0 0 21 427 136 10 0
CDI 0 0 0 0 45 1223 94 0
VCDI 0 0 0 0 7 219 1601 24
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1015 22 122 14 0 0 0
OW 0 91 14 76 57 0 6 0
VODI 0 66 6 145 181 7 12 0
ODI 0 5 1 81 413 166 21 0
CDI 0 0 0 30 140 1131 219 0
VCDI 0 0 0 0 13 274 1451 24

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 322 30 155 38 0 0 0
OW 0 75 15 285 45 1 0 0
VODI 0 1 0 199 356 63 26 0
ODI 0 0 0 28 508 381 18 0
CDI 0 0 0 3 198 1195 636 0
VCDI 0 0 0 0 1 873 3102 33
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 389 43 335 120 37 24 0
OW 0 8 2 172 142 90 12 0
VODI 0 1 0 100 240 280 5 0
ODI 0 0 0 43 267 307 76 0
CDI 0 0 0 20 353 1053 1806 7
VCDI 0 0 0 0 24 746 1859 26

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14210 3770 65 408 290 15 0 0
OW 0 0 2 79 109 11 0 0
VODI 0 0 0 25 231 33 0 0
ODI 0 0 0 0 213 114 0 0
CDI 0 0 0 0 25 358 86 0
VCDI 0 0 0 0 0 3 162 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14210 3770 67 482 421 26 0 0
OW 0 0 0 27 164 54 0 0
VODI 0 0 0 3 217 123 0 0
ODI 0 0 0 0 66 234 48 0
CDI 0 0 0 0 0 97 178 0
VCDI 0 0 0 0 0 0 22 0


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