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: 2024-02-01

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2024-02-05

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 82 14 4 0 0 0 0
OW 0 8 11 13 1 0 0 0
VODI 0 10 9 145 12 0 0 0
ODI 0 22 9 101 34 4 0 0
CDI 0 51 33 135 93 80 1 0
VCDI 0 1 25 192 373 1009 5074 29356
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 70 12 8 1 0 0 0
OW 0 9 7 15 4 0 0 0
VODI 0 8 3 10 15 1 0 0
ODI 0 4 5 12 15 7 0 0
CDI 0 3 2 98 26 45 2 0
VCDI 0 80 72 447 452 1040 5073 29356

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 0 71 3062
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 71 3062

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 8 770 9204
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 8 770 9204

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 0
VCDI 0 0 0 0 0 0 0 7246
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 7246

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 2
VCDI 0 0 0 0 16 261 1034 4013
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 5
VCDI 0 0 0 0 16 261 1034 4010

Kara Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 4 156 0 0 0 0 0 0
OW 0 150 27 3 0 0 0 0
VODI 0 73 38 82 29 0 0 0
ODI 0 9 4 92 61 62 0 0
CDI 0 6 2 59 250 254 24 0
VCDI 0 6 4 68 285 1785 2785 13
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2 37 0 0 0 0 0 0
OW 2 31 0 0 0 0 0 0
VODI 0 111 1 0 0 0 0 0
ODI 0 174 30 56 20 3 0 0
CDI 0 29 32 48 122 128 29 0
VCDI 0 18 12 200 483 1970 2780 13

Barents Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 3835 4192 75 90 16 0 0 0
OW 0 312 61 107 18 0 0 0
VODI 0 150 13 180 66 2 0 0
ODI 0 40 20 47 193 21 0 0
CDI 0 26 29 70 113 345 9 0
VCDI 0 14 16 101 158 403 609 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 3821 3785 74 129 28 0 0 0
OW 14 318 27 89 39 1 0 0
VODI 0 272 28 107 56 12 0 0
ODI 0 134 6 59 100 30 0 0
CDI 0 110 17 47 151 239 13 0
VCDI 0 115 62 164 190 489 605 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 4463 3226 90 65 4 0 0 0
OW 0 95 27 61 13 0 0 0
VODI 0 83 29 77 38 1 0 0
ODI 0 55 18 59 36 6 0 0
CDI 0 48 32 141 83 25 0 0
VCDI 0 0 0 66 303 1275 1277 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 4463 2988 70 69 5 0 0 0
OW 0 119 24 49 7 0 0 0
VODI 0 111 27 50 39 0 0 0
ODI 0 81 13 48 25 6 0 0
CDI 0 51 15 49 42 21 5 0
VCDI 0 157 47 204 359 1280 1272 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 7013 3406 197 300 194 90 3 0
OW 0 9 29 123 37 13 3 0
VODI 0 0 3 88 103 20 0 0
ODI 0 0 0 18 106 34 0 0
CDI 0 0 0 0 78 215 51 0
VCDI 0 0 0 0 5 360 490 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 7013 3410 203 340 213 102 3 0
OW 0 5 20 106 64 22 3 0
VODI 0 0 6 55 97 46 0 0
ODI 0 0 0 25 66 59 3 0
CDI 0 0 0 3 68 118 79 0
VCDI 0 0 0 0 15 385 459 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 0 0 4 0 0 0 0
OW 0 0 0 9 3 0 0 0
VODI 0 0 0 9 16 0 0 0
ODI 0 0 0 0 35 4 0 0
CDI 0 0 0 0 22 42 0 0
VCDI 0 0 0 0 19 459 3038 2143
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 6 1 0 0 0
OW 0 0 0 6 2 0 0 0
VODI 0 0 0 9 11 0 0 0
ODI 0 0 0 1 23 0 0 0
CDI 0 0 0 0 26 10 0 0
VCDI 0 0 0 0 32 495 3038 2143

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 23 2 7
VCDI 0 0 0 0 0 599 3676 4280
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 28 5 3
VCDI 0 0 0 0 0 594 3673 4284

Labrador Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 10773 4981 212 268 2 0 0 0
OW 54 12 30 261 38 1 0 0
VODI 0 1 0 131 201 2 0 0
ODI 0 0 0 10 287 28 0 0
CDI 0 0 0 0 221 354 0 0
VCDI 0 0 0 0 45 1356 941 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 10824 4851 201 273 12 0 0 0
OW 3 93 12 203 39 1 0 0
VODI 0 47 15 119 151 6 0 0
ODI 0 3 14 63 198 27 0 0
CDI 0 0 0 12 287 202 0 0
VCDI 0 0 0 0 107 1505 941 0


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