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: 2021-05-13

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-05-17

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 0 0 0 73 84 0 0
OW 0 8 2 18 3 40 2 0
VODI 0 1 2 18 4 47 8 0
ODI 0 0 0 11 6 36 9 0
CDI 0 0 0 63 87 94 128 0
VCDI 0 0 0 0 77 2091 8119 25871
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 75 115 1 0
OW 0 1 1 9 1 50 7 0
VODI 0 7 2 13 0 58 13 0
ODI 0 1 1 13 3 41 39 0
CDI 0 0 0 37 39 60 136 0
VCDI 0 0 0 38 132 2068 8070 25871

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 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 34 36 9 0
VCDI 0 0 0 0 26 194 383 2451
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 0 0 0 0 0
CDI 0 0 0 0 11 13 3 0
VCDI 0 0 0 0 49 217 389 2451

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 4 1 0 0
VODI 0 0 0 0 35 3 0 0
ODI 0 0 0 1 41 32 0 0
CDI 0 0 0 27 91 171 56 2
VCDI 0 0 0 19 180 399 3385 5535
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 12 2 0 0
ODI 0 0 0 0 26 25 0 0
CDI 0 0 0 4 68 133 69 2
VCDI 0 0 0 43 245 446 3372 5535

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 5 1 0 0 0 0 0
OW 0 8 3 4 1 0 0 0
VODI 0 18 2 11 3 0 0 0
ODI 0 20 1 10 21 0 0 0
CDI 0 26 7 73 139 51 16 0
VCDI 0 24 5 67 196 339 2803 1800
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 0 0 0 0 0 0
OW 0 5 2 0 0 0 0 0
VODI 0 11 2 7 1 0 0 0
ODI 0 12 2 6 2 0 0 0
CDI 0 43 3 27 67 39 25 0
VCDI 0 29 10 125 290 351 2794 1800

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 10 1 13 0
CDI 0 0 0 0 70 54 102 20
VCDI 0 0 0 0 112 491 3522 2850
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 0 7 1 14 13
CDI 0 0 0 0 58 80 193 48
VCDI 0 0 0 0 128 465 3430 2809

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 1 0 0 0 0
VODI 0 0 0 15 11 1 0 0
ODI 0 1 1 31 44 23 3 0
CDI 0 11 4 80 278 181 52 34
VCDI 0 0 0 37 269 1374 2315 560
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 2 1 0 0 0
ODI 0 0 0 10 19 10 10 6
CDI 0 12 5 85 117 90 68 43
VCDI 0 0 0 67 465 1479 2292 545

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 3 1 61 10 0 0 0
OW 0 1 0 53 36 0 0 0
VODI 0 0 0 113 188 3 0 0
ODI 0 0 0 7 285 28 0 0
CDI 0 0 0 1 364 480 78 6
VCDI 0 0 0 0 125 1330 2615 543
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2 1 63 20 0 0 0
OW 0 2 0 52 105 1 0 0
VODI 0 0 0 68 174 21 0 0
ODI 0 0 0 38 148 101 5 0
CDI 0 0 0 13 202 277 833 8
VCDI 0 0 0 1 359 1441 1855 541

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4078 3921 70 511 140 0 0 0
OW 0 3 4 124 152 0 0 0
VODI 0 0 0 135 249 3 0 0
ODI 0 0 0 83 323 26 0 0
CDI 0 0 0 7 552 427 40 0
VCDI 0 0 0 0 78 357 48 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4078 3920 68 524 229 0 0 0
OW 0 4 5 82 226 2 0 0
VODI 0 0 1 68 231 10 0 0
ODI 0 0 0 72 150 31 0 0
CDI 0 0 0 104 353 341 53 0
VCDI 0 0 0 10 305 429 35 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 5176 3263 22 143 56 4 0 0
OW 0 41 10 109 26 9 0 0
VODI 0 3 2 137 64 11 0 0
ODI 0 0 0 23 220 50 0 0
CDI 0 0 0 1 388 763 19 0
VCDI 0 0 0 0 26 306 824 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5176 3259 24 163 80 13 0 0
OW 0 42 7 95 25 11 0 0
VODI 0 6 3 132 78 35 0 0
ODI 0 0 0 22 169 80 0 0
CDI 0 0 0 1 401 590 12 0
VCDI 0 0 0 0 27 414 831 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 7843 3438 46 162 68 0 0 0
OW 0 17 24 124 11 3 0 0
VODI 0 0 0 69 114 5 0 0
ODI 0 0 0 0 211 32 1 0
CDI 0 0 0 0 163 316 47 0
VCDI 0 0 0 0 0 30 264 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7843 3445 59 229 75 0 0 0
OW 0 10 11 94 64 3 0 0
VODI 0 0 0 32 172 21 0 0
ODI 0 0 0 0 111 113 18 0
CDI 0 0 0 0 145 249 294 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 0 207 12 31 0 0 0 0
OW 0 36 8 47 5 0 0 0
VODI 0 4 1 96 52 0 0 0
ODI 0 0 0 40 199 6 0 0
CDI 0 0 0 12 506 780 7 0
VCDI 0 0 0 29 90 1123 2274 238
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 181 10 33 5 0 0 0
OW 0 35 2 20 11 0 0 0
VODI 0 31 7 33 15 4 0 0
ODI 0 0 2 75 52 16 0 0
CDI 0 0 0 47 590 354 13 0
VCDI 0 0 0 47 179 1535 2268 238

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 0 0 0 4 0 0 0
OW 0 0 0 45 42 0 0 0
VODI 0 0 0 108 189 0 0 0
ODI 0 0 0 38 310 23 0 0
CDI 0 0 0 9 415 450 44 0
VCDI 0 0 1 11 204 1754 4267 673
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 17 0 0 0
OW 0 0 0 31 53 0 0 0
VODI 0 0 0 71 171 0 0 0
ODI 0 0 0 51 178 24 0 0
CDI 0 0 0 44 411 276 26 0
VCDI 0 0 1 14 334 1927 4285 673

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14253 4132 67 321 92 16 0 0
OW 0 5 9 133 53 12 0 0
VODI 0 0 0 84 143 4 0 0
ODI 0 0 0 12 317 59 0 0
CDI 0 0 0 0 91 376 27 0
VCDI 0 0 0 0 0 0 3 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14253 4090 59 347 104 15 0 0
OW 0 47 17 127 111 15 0 0
VODI 0 0 0 50 191 26 0 0
ODI 0 0 0 26 181 137 1 0
CDI 0 0 0 0 109 274 29 0
VCDI 0 0 0 0 0 0 0 0


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