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: 2022-02-10

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-02-14

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 36 6 74 80 50 1 0
OW 0 1 0 7 20 22 6 0
VODI 0 5 0 10 27 40 6 0
ODI 0 10 1 30 31 59 33 0
CDI 0 13 2 31 165 148 64 0
VCDI 0 55 5 131 339 673 4638 30083
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 36 6 70 85 60 5 0
OW 0 1 0 6 16 24 8 0
VODI 0 0 0 7 18 34 9 0
ODI 0 4 0 8 6 34 19 0
CDI 0 11 2 23 17 33 31 0
VCDI 0 68 6 169 520 807 4676 30083

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 0 0 0 2
VCDI 0 0 0 0 0 80 698 2353
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 0 0 0 0
VCDI 0 0 0 0 0 80 698 2355

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 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 9982
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 0 0 0 0
VCDI 0 0 0 0 0 0 0 9982

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 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 5654
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 0 0 0 0
VCDI 0 0 0 0 0 0 0 5654

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 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 39
VCDI 0 0 0 0 0 0 0 7207
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 0 0 0 68
VCDI 0 0 0 0 0 0 0 7178

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 0 0 0 0
ODI 0 0 0 0 2 0 0 0
CDI 0 0 0 3 37 4 0 1
VCDI 0 0 0 4 252 248 1363 3412
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 24 5 4 0
VCDI 0 0 0 7 267 247 1359 3413

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 91 9 39 0 0 0 0
OW 0 36 1 8 0 0 0 0
VODI 0 145 2 16 0 0 0 0
ODI 0 140 3 15 6 5 0 0
CDI 0 135 5 24 62 53 10 0
VCDI 0 204 18 112 257 1100 3784 51
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 53 9 35 0 0 0 0
OW 0 29 0 10 0 0 0 0
VODI 0 60 1 6 0 0 0 0
ODI 0 103 1 8 11 12 0 0
CDI 0 145 4 24 57 75 7 0
VCDI 0 361 23 131 257 1071 3787 51

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3057 4202 37 91 4 8 0 0
OW 0 243 37 176 15 4 0 0
VODI 0 117 9 225 141 10 0 0
ODI 0 31 7 56 308 45 0 0
CDI 0 8 0 31 150 339 11 0
VCDI 0 15 5 44 100 528 1277 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3057 3961 30 88 6 6 0 0
OW 0 382 39 142 32 8 0 0
VODI 0 169 13 221 138 11 0 0
ODI 0 68 5 68 228 68 0 0
CDI 0 19 3 58 178 295 30 0
VCDI 0 17 5 46 136 546 1258 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 4827 3376 24 98 13 1 0 0
OW 0 132 7 58 23 0 0 0
VODI 0 69 11 112 87 3 0 0
ODI 0 10 7 70 112 16 0 0
CDI 0 2 0 34 152 146 10 0
VCDI 0 0 0 0 13 285 1719 279
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4827 3250 22 97 18 0 0 0
OW 0 148 5 45 21 1 0 0
VODI 0 104 5 73 37 3 0 0
ODI 0 52 4 38 67 8 0 0
CDI 0 34 11 84 128 71 1 0
VCDI 0 1 2 35 129 368 1728 279

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7884 3277 34 139 84 0 0 0
OW 0 77 26 67 35 0 0 0
VODI 0 27 2 82 66 6 0 0
ODI 0 6 1 41 95 10 0 0
CDI 0 1 0 8 155 145 4 0
VCDI 0 0 0 0 9 280 427 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7884 3206 39 171 97 0 0 0
OW 0 75 10 42 56 6 0 0
VODI 0 59 10 41 71 15 0 0
ODI 0 27 3 31 59 33 4 0
CDI 0 21 1 48 97 145 43 0
VCDI 0 0 0 4 64 242 384 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 41 5 25 1 0 0 0
OW 0 0 1 30 26 0 0 0
VODI 0 0 0 19 51 3 0 0
ODI 0 0 0 5 53 11 0 0
CDI 0 0 0 2 45 41 3 0
VCDI 0 0 0 0 100 967 3395 979
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 41 5 45 21 0 0 0
OW 0 0 1 8 31 1 0 0
VODI 0 0 0 8 38 7 0 0
ODI 0 0 0 11 41 16 0 0
CDI 0 0 0 6 33 39 6 0
VCDI 0 0 0 3 112 959 3392 979

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 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 48 0 0
VCDI 0 0 0 0 0 690 3519 4330
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 0 40 0 0
VCDI 0 0 0 0 0 698 3519 4330

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9904 3930 63 369 190 5 0 0
OW 0 35 9 93 145 15 0 0
VODI 0 6 6 96 228 38 0 0
ODI 0 0 0 11 259 91 0 0
CDI 0 0 0 0 152 501 0 0
VCDI 0 0 0 0 95 2770 1198 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9904 3940 63 413 316 15 0 0
OW 0 28 11 88 163 36 0 0
VODI 0 3 4 53 211 84 0 0
ODI 0 0 0 13 147 131 0 0
CDI 0 0 0 2 119 375 0 0
VCDI 0 0 0 0 113 2779 1198 0


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