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: 2023-01-26

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-01-30

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 0 232 2 8 0 0 0 0
OW 0 34 4 16 0 0 0 0
VODI 0 37 3 33 0 0 0 0
ODI 0 12 3 30 13 0 0 0
CDI 0 3 4 37 94 0 0 0
VCDI 0 0 0 22 340 1252 5763 28960
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 164 0 0 0 0 0 0
OW 0 38 3 6 0 0 0 0
VODI 0 41 2 21 0 0 0 0
ODI 0 32 1 14 4 0 0 0
CDI 0 25 6 33 16 0 0 0
VCDI 0 18 4 72 427 1252 5763 28960

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 0
VCDI 0 0 0 0 0 73 1857 1203
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 73 1857 1203

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 6 729 9247
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 6 729 9247

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 33 0 0
CDI 0 0 0 0 0 57 17 0
VCDI 0 0 0 0 0 182 2361 3004
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 37 1 0
CDI 0 0 0 0 0 46 16 0
VCDI 0 0 0 0 0 189 2361 3004

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 5 0 0
VCDI 0 0 0 0 0 13 813 6415
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 9 0 3
VCDI 0 0 0 0 0 9 813 6412

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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 88 933 4305
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 88 933 4305

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4 125 0 0 0 0 0 0
OW 0 27 0 0 1 0 0 0
VODI 0 69 0 1 14 0 0 0
ODI 0 60 2 7 37 41 0 0
CDI 0 75 8 49 97 178 23 0
VCDI 0 61 6 47 99 779 3328 1193
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4 71 0 0 0 0 0 0
OW 0 20 0 0 0 0 0 0
VODI 0 42 0 0 12 1 0 0
ODI 0 32 0 1 19 107 1 0
CDI 0 39 0 2 18 92 28 9
VCDI 0 213 16 101 199 798 3322 1184

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5970 3128 25 44 0 0 0 0
OW 0 198 14 88 18 0 0 0
VODI 0 130 20 192 83 4 0 0
ODI 0 37 8 144 284 19 0 0
CDI 0 2 0 45 187 77 0 0
VCDI 0 0 0 3 175 366 70 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5970 3092 26 63 7 0 0 0
OW 0 167 11 68 18 0 0 0
VODI 0 92 14 106 82 5 0 0
ODI 0 47 7 99 158 26 0 0
CDI 0 42 1 73 182 37 0 0
VCDI 0 55 8 107 300 398 70 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 5867 2438 3 23 0 0 0 0
OW 0 111 5 48 1 0 0 0
VODI 0 89 6 65 23 0 0 0
ODI 0 105 5 75 42 0 0 0
CDI 0 35 4 98 95 10 2 0
VCDI 0 0 1 48 274 670 1553 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5867 2311 2 7 0 0 0 0
OW 0 134 3 21 0 0 0 0
VODI 0 105 4 61 6 0 0 0
ODI 0 63 5 50 26 0 0 0
CDI 0 55 1 57 45 0 2 0
VCDI 0 110 9 161 358 680 1553 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 8186 3104 21 64 37 0 0 0
OW 0 79 22 72 35 3 0 0
VODI 0 11 8 116 72 12 0 0
ODI 0 0 0 34 98 33 0 0
CDI 0 0 0 1 127 101 0 0
VCDI 0 0 0 0 47 521 184 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8186 3095 31 101 67 6 0 0
OW 0 62 3 66 60 10 0 0
VODI 0 37 14 43 61 50 0 0
ODI 0 0 3 50 47 58 0 0
CDI 0 0 0 27 67 68 6 0
VCDI 0 0 0 0 114 478 178 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 77 7 19 0 0 0 0
OW 0 0 0 17 4 0 0 0
VODI 0 0 0 24 16 0 0 0
ODI 0 3 2 15 32 1 0 0
CDI 0 4 1 14 39 14 2 0
VCDI 0 1 1 26 158 457 3364 1505
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 77 7 16 0 0 0 0
OW 0 0 0 14 3 0 0 0
VODI 0 0 0 14 11 0 0 0
ODI 0 0 0 6 23 3 0 0
CDI 0 0 0 16 30 13 2 0
VCDI 0 8 4 49 182 456 3364 1505

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 13 0 2
VCDI 0 0 0 0 0 160 2387 6025
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 26 5 3
VCDI 0 0 0 0 0 147 2382 6024

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12225 3903 53 225 40 0 0 0
OW 0 35 7 134 71 0 0 0
VODI 0 3 3 69 151 0 0 0
ODI 0 0 0 32 210 14 0 0
CDI 0 0 0 0 239 203 2 0
VCDI 0 0 0 0 87 1235 1268 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12225 3896 47 228 56 0 0 0
OW 0 40 12 97 62 0 0 0
VODI 0 5 3 95 137 1 0 0
ODI 0 0 1 31 173 13 0 0
CDI 0 0 0 9 214 191 0 0
VCDI 0 0 0 0 156 1247 1270 0


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