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: 2024-01-25

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2024-01-29

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 0 176 0 0 0 0 0 0
OW 0 39 7 0 0 0 0 0
VODI 0 22 23 17 0 0 0 0
ODI 0 10 10 29 2 0 0 0
CDI 0 13 15 44 61 5 1 0
VCDI 0 0 1 55 248 618 6175 29331
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 144 2 0 0 0 0 0
OW 0 36 3 3 0 0 0 0
VODI 0 34 8 7 0 0 0 0
ODI 0 8 14 17 5 0 0 0
CDI 0 16 8 22 17 6 1 0
VCDI 0 22 21 96 289 617 6175 29331

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 3 90 3040
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 3 90 3040

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 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 1
VCDI 0 0 0 0 0 0 0 7245

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 2 2
VCDI 0 0 0 0 6 52 755 4509
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 1 0
VCDI 0 0 0 0 6 52 756 4511

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 72 0 0 0 0 0 0
OW 0 31 0 0 0 0 0 0
VODI 0 26 3 5 0 0 0 0
ODI 0 30 1 14 5 23 0 0
CDI 0 31 4 20 21 73 23 4
VCDI 0 44 23 91 165 569 4646 407
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 5 0 0 0 0 0 0
OW 0 34 0 0 0 0 0 0
VODI 0 32 0 0 0 0 0 0
ODI 0 21 0 8 3 22 0 0
CDI 0 24 1 19 16 69 16 0
VCDI 0 118 30 103 172 574 4653 411

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3879 3857 87 83 20 0 0 0
OW 0 279 39 108 16 0 0 0
VODI 0 121 43 154 61 3 0 0
ODI 0 22 26 88 166 18 0 0
CDI 0 15 17 91 156 143 1 0
VCDI 0 0 3 52 211 590 982 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3879 3503 58 38 26 0 0 0
OW 0 302 29 76 17 1 0 0
VODI 0 216 42 158 32 7 0 0
ODI 0 120 27 90 108 13 0 0
CDI 0 79 10 54 128 64 0 0
VCDI 0 74 49 160 319 669 983 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 4778 3169 59 46 11 0 0 0
OW 0 125 40 59 4 0 0 0
VODI 0 62 34 93 19 1 0 0
ODI 0 44 11 57 44 2 0 0
CDI 0 43 29 62 71 13 3 0
VCDI 0 12 17 136 371 1234 1047 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4778 2823 39 38 11 0 0 0
OW 0 212 15 27 8 1 0 0
VODI 0 156 31 41 13 2 0 0
ODI 0 72 30 44 16 1 0 0
CDI 0 67 12 74 31 8 1 0
VCDI 0 125 63 229 441 1238 1049 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 7185 3489 182 296 148 63 0 0
OW 0 6 34 126 37 6 0 0
VODI 0 0 3 86 85 16 0 0
ODI 0 0 0 13 104 26 1 0
CDI 0 0 0 0 73 167 18 0
VCDI 0 0 0 0 9 403 412 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7185 3485 189 319 181 79 0 0
OW 0 10 30 124 47 20 2 0
VODI 0 0 0 64 74 23 10 0
ODI 0 0 0 14 72 45 7 0
CDI 0 0 0 0 63 101 0 0
VCDI 0 0 0 0 19 413 412 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 23 9 8 0 0 0 0
OW 0 4 7 20 5 0 0 0
VODI 0 0 0 17 32 1 0 0
ODI 0 0 0 4 71 37 0 0
CDI 0 0 0 0 42 144 5 0
VCDI 0 0 0 0 21 418 2760 2175
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 27 14 16 2 0 0 0
OW 0 0 2 22 16 2 0 0
VODI 0 0 0 7 67 63 0 0
ODI 0 0 0 4 32 75 1 0
CDI 0 0 0 0 27 72 14 0
VCDI 0 0 0 0 27 388 2750 2175

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 3 3 10 0
VCDI 0 0 0 0 24 318 4239 3990
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 3 19 0
VCDI 0 0 0 0 27 318 4230 3990

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9759 6373 260 263 8 0 0 0
OW 1 53 35 173 49 0 0 0
VODI 0 11 12 173 122 0 0 0
ODI 0 0 2 57 250 11 0 0
CDI 0 0 0 3 242 151 0 0
VCDI 0 0 0 0 224 1492 485 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9760 6402 280 296 19 0 0 0
OW 0 19 27 189 74 0 0 0
VODI 0 16 2 128 141 4 0 0
ODI 0 0 0 42 178 30 0 0
CDI 0 0 0 14 187 100 0 0
VCDI 0 0 0 0 296 1520 485 0


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