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: 2023-03-30

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-04-03

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 0 5 0 0
OW 0 0 0 0 0 11 0 0
VODI 0 0 0 0 0 7 8 0
ODI 0 0 0 0 0 8 16 0
CDI 0 0 0 0 0 12 93 0
VCDI 0 0 0 0 0 26 1994 34722
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 10 1 0
OW 0 0 0 0 0 12 22 0
VODI 0 0 0 0 0 5 46 0
ODI 0 0 0 0 0 5 37 0
CDI 0 0 0 0 0 12 52 0
VCDI 0 0 0 0 0 25 1953 34722

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 6 5
VCDI 0 0 0 0 0 24 412 2686
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 7 7
VCDI 0 0 0 0 0 24 411 2684

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 4 0 0
CDI 0 0 0 0 2 79 32 17
VCDI 0 0 0 0 23 581 2306 6938
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 11 0 0
CDI 0 0 0 0 0 79 19 24
VCDI 0 0 0 0 25 574 2319 6931

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 2 4
VCDI 0 0 0 0 0 15 669 4964
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 4 2
VCDI 0 0 0 0 0 15 667 4966

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 7 1 96
VCDI 0 0 0 0 0 48 1575 5519
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 6 1 48
VCDI 0 0 0 0 0 49 1575 5567

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 2 2 0
VCDI 0 0 0 0 0 4 457 4861
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 2 2 0
VCDI 0 0 0 0 0 4 457 4861

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 0 0 0 8 8 0 0
OW 0 0 0 0 5 14 0 0
VODI 0 0 0 0 5 17 0 0
ODI 0 0 0 0 0 14 2 0
CDI 0 0 0 0 0 15 5 0
VCDI 0 0 0 0 0 87 1959 4192
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 8 15 0 0
OW 0 0 0 0 6 19 0 0
VODI 0 0 0 0 4 19 4 0
ODI 0 0 0 0 0 11 6 0
CDI 0 0 0 0 0 13 15 0
VCDI 0 0 0 0 0 78 1941 4192

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3070 3807 198 367 134 15 0 0
OW 0 20 19 145 89 15 0 0
VODI 0 0 8 114 163 46 0 0
ODI 0 0 0 35 184 88 0 0
CDI 0 0 0 11 186 278 28 0
VCDI 0 0 0 1 7 880 1423 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3070 3792 191 373 165 21 0 0
OW 0 29 21 107 101 24 0 0
VODI 0 6 12 103 122 64 0 0
ODI 0 0 1 62 117 91 4 0
CDI 0 0 0 28 219 195 22 0
VCDI 0 0 0 0 39 927 1425 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 3967 3355 143 145 23 1 0 0
OW 0 25 34 119 19 0 0 0
VODI 0 1 9 102 86 5 0 0
ODI 0 0 0 51 126 5 0 0
CDI 0 0 0 3 126 74 1 0
VCDI 0 0 0 0 59 526 2316 375
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3967 3348 147 174 25 1 0 0
OW 0 22 26 101 34 1 0 0
VODI 0 11 11 84 90 4 0 0
ODI 0 0 2 41 103 16 0 0
CDI 0 0 0 18 95 87 2 0
VCDI 0 0 0 2 92 502 2315 375

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7390 3459 98 125 74 0 0 0
OW 0 45 61 104 41 0 0 0
VODI 0 7 16 121 86 10 0 0
ODI 0 0 3 62 102 32 0 0
CDI 0 0 0 11 138 171 19 0
VCDI 0 0 0 0 18 477 318 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7390 3461 107 169 100 0 0 0
OW 0 46 45 87 57 8 0 0
VODI 0 4 26 91 101 23 0 0
ODI 0 0 0 66 74 74 6 0
CDI 0 0 0 10 113 147 57 0
VCDI 0 0 0 0 14 438 274 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 2 4 0 0 0 0
OW 0 0 0 6 0 0 0 0
VODI 0 0 0 11 2 1 0 0
ODI 0 0 0 9 14 5 0 0
CDI 0 0 0 2 43 19 3 0
VCDI 0 0 0 0 113 532 2200 2837
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 2 4 0 0 0 0
VODI 0 0 0 9 1 0 0 0
ODI 0 0 0 9 6 2 0 0
CDI 0 0 0 8 22 21 7 0
VCDI 0 0 0 2 143 534 2196 2837

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 0 0 0
VCDI 0 0 0 0 0 21 554 8012
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 21 554 8012

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9993 5854 195 291 82 0 0 0
OW 0 40 41 264 92 0 0 0
VODI 0 8 4 113 191 33 0 0
ODI 0 5 1 14 127 78 3 0
CDI 0 0 0 3 60 186 31 0
VCDI 0 0 0 0 14 512 1923 51
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9993 5845 189 451 172 14 0 0
OW 0 48 38 125 104 27 13 0
VODI 0 12 14 81 153 42 33 0
ODI 0 2 0 25 84 94 30 0
CDI 0 0 0 3 34 162 54 0
VCDI 0 0 0 0 19 470 1827 51


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