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: 2024-08-08

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-08-12

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 147 1382 25 3 0 0 0 0
OW 0 644 344 179 0 0 0 0
VODI 0 4 16 1829 234 0 0 0
ODI 0 0 0 110 12134 482 0 0
CDI 0 0 0 0 1043 14124 197 0
VCDI 0 0 0 0 0 190 3815 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 147 1118 15 4 0 0 0 0
OW 0 557 125 184 3 0 0 0
VODI 0 338 217 1117 542 0 0 0
ODI 0 17 28 816 8507 2947 0 0
CDI 0 0 0 0 4359 11724 2890 0
VCDI 0 0 0 0 0 125 1122 0

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 368 221 11 17 0 0 0 0
OW 36 453 74 20 0 0 0 0
VODI 1 127 23 120 3 3 0 0
ODI 0 57 7 164 23 29 0 0
CDI 0 52 7 120 382 422 98 0
VCDI 0 0 0 8 80 64 129 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 355 155 0 10 0 0 0 0
OW 43 160 17 5 0 0 0 0
VODI 7 183 24 43 3 2 0 0
ODI 0 101 30 45 16 16 0 0
CDI 0 144 48 298 219 409 152 0
VCDI 0 167 3 48 250 91 75 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2668 1501 0 0 0 0 0 0
OW 0 958 238 90 0 0 0 0
VODI 0 0 21 1639 74 0 0 0
ODI 0 0 0 116 1379 35 0 0
CDI 0 0 0 0 104 1119 31 0
VCDI 0 0 0 0 0 5 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2668 1230 1 0 0 0 0 0
OW 0 893 45 15 0 0 0 0
VODI 0 336 213 1079 59 0 0 0
ODI 0 0 0 751 1226 57 0 0
CDI 0 0 0 0 272 1102 31 0
VCDI 0 0 0 0 0 0 0 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1107 1983 0 0 0 0 0 0
OW 0 462 139 61 5 0 0 0
VODI 0 7 17 719 128 0 0 0
ODI 0 0 0 29 819 12 0 0
CDI 0 0 0 0 14 151 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1097 1619 0 0 0 0 0 0
OW 10 756 75 52 6 0 0 0
VODI 0 77 81 601 152 1 0 0
ODI 0 0 0 156 791 72 0 0
CDI 0 0 0 0 17 90 0 0
VCDI 0 0 0 0 0 0 0 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 919 1857 0 0 0 0 0 0
OW 0 820 356 144 1 0 0 0
VODI 0 14 24 2002 162 0 0 0
ODI 0 0 0 30 895 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 919 1356 0 0 0 0 0 0
OW 0 1101 124 68 1 0 0 0
VODI 0 234 256 1964 335 0 0 0
ODI 0 0 0 144 721 0 0 0
CDI 0 0 0 0 1 0 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2236 1350 0 0 0 0 0 0
OW 0 378 115 32 0 0 0 0
VODI 0 0 10 644 88 0 0 0
ODI 0 0 0 27 369 9 0 0
CDI 0 0 0 0 0 41 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2236 1182 0 0 0 0 0 0
OW 0 443 38 35 1 0 0 0
VODI 0 103 87 600 229 0 0 0
ODI 0 0 0 68 227 50 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5292 1012 3 4 0 0 0 0
OW 0 6 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5277 1009 2 1 0 0 0 0
OW 15 9 1 3 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 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11307 15 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11306 15 0 0 0 0 0 0
OW 1 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 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 9244 1526 9 7 0 0 0 0
OW 3 406 84 62 0 0 0 0
VODI 0 0 2 160 18 1 0 0
ODI 0 0 0 3 77 8 0 0
CDI 0 0 0 0 10 76 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9238 1333 6 6 0 0 0 0
OW 9 592 78 97 0 0 0 0
VODI 0 7 11 125 29 0 0 0
ODI 0 0 0 4 48 4 0 0
CDI 0 0 0 0 28 72 0 0
VCDI 0 0 0 0 0 9 0 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 12842 145 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12842 145 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 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 5557 133 0 0 0 0 0 0
OW 3 13 4 8 0 0 0 0
VODI 10 3 2 68 0 0 0 0
ODI 0 0 0 2 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5554 139 0 0 0 0 0 0
OW 6 2 1 3 0 0 0 0
VODI 7 8 5 71 0 0 0 0
ODI 3 0 0 4 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8452 4 0 0 0 0 0 0
OW 80 0 0 0 0 0 0 0
VODI 2 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8382 4 0 0 0 0 0 0
OW 151 0 0 0 0 0 0 0
VODI 1 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 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0


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