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: 2023-08-03

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-08-07

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 0 813 131 53 0 0 0 0
OW 0 38 174 353 9 0 0 0
VODI 0 0 4 1384 275 0 0 0
ODI 0 0 0 119 5975 389 0 0
CDI 0 0 0 1 2315 14030 511 0
VCDI 0 0 0 0 0 1253 7738 1337
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 543 104 106 3 0 0 0
OW 0 239 121 259 27 0 0 0
VODI 0 67 82 1249 831 5 0 0
ODI 0 2 2 238 3857 1312 0 0
CDI 0 0 0 58 3851 11780 2191 0
VCDI 0 0 0 0 5 2575 6058 1337

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 288 557 61 135 39 0 0 0
OW 0 35 12 110 36 0 0 0
VODI 0 1 0 269 143 0 0 0
ODI 0 0 0 17 269 7 0 0
CDI 0 0 0 19 202 766 0 0
VCDI 0 0 0 1 19 147 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 288 548 61 203 71 0 0 0
OW 0 39 12 115 51 0 0 0
VODI 0 6 0 195 213 0 0 0
ODI 0 0 0 17 121 21 0 0
CDI 0 0 0 9 216 657 0 0
VCDI 0 0 0 12 36 242 0 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 537 3070 180 115 0 0 0 0
OW 0 54 103 433 0 0 0 0
VODI 0 2 1 1798 160 0 0 0
ODI 0 0 0 72 2681 140 0 0
CDI 0 0 0 0 123 513 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 537 3075 203 449 0 0 0 0
OW 0 51 78 884 13 0 0 0
VODI 0 0 3 1009 1169 5 0 0
ODI 0 0 0 76 1688 377 0 0
CDI 0 0 0 0 94 271 0 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 1078 2581 414 406 0 0 0 0
OW 0 2 41 352 0 0 0 0
VODI 0 0 0 715 23 0 0 0
ODI 0 0 0 8 34 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 1078 2563 407 518 0 0 0 0
OW 0 20 48 556 6 0 0 0
VODI 0 0 0 407 34 0 0 0
ODI 0 0 0 0 17 0 0 0
CDI 0 0 0 0 0 0 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 217 2520 127 57 0 0 0 0
OW 0 68 110 372 0 0 0 0
VODI 0 0 0 1583 271 0 0 0
ODI 0 0 0 17 1789 20 0 0
CDI 0 0 0 0 25 70 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 217 2336 103 204 0 0 0 0
OW 0 228 105 571 52 0 0 0
VODI 0 24 29 987 618 13 0 0
ODI 0 0 0 267 1385 74 0 0
CDI 0 0 0 0 30 3 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 1413 1383 89 28 0 0 0 0
OW 0 2 34 160 0 0 0 0
VODI 0 0 0 241 62 0 0 0
ODI 0 0 0 9 618 94 0 0
CDI 0 0 0 0 71 1122 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 1413 1338 54 27 0 0 0 0
OW 0 47 63 179 1 0 0 0
VODI 0 0 6 192 72 0 0 0
ODI 0 0 0 40 567 149 0 0
CDI 0 0 0 0 111 1067 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 1190 3775 191 116 4 0 0 0
OW 0 9 44 312 1 0 0 0
VODI 0 0 1 272 145 0 0 0
ODI 0 0 0 12 259 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 1190 3747 146 202 8 0 0 0
OW 0 35 79 231 30 0 0 0
VODI 0 2 11 249 160 0 0 0
ODI 0 0 0 30 209 0 0 0
CDI 0 0 0 0 2 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 9334 1988 4 1 0 0 0 0
OW 0 4 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 9334 1970 4 1 0 0 0 0
OW 0 18 0 0 0 0 0 0
VODI 0 4 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 6861 2598 184 170 0 0 0 0
OW 0 33 82 232 1 0 0 0
VODI 0 0 1 716 116 4 0 0
ODI 0 0 0 52 342 7 0 0
CDI 0 0 0 0 69 136 49 0
VCDI 0 0 0 0 0 0 43 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6861 2597 192 230 0 0 0 0
OW 0 32 73 303 47 0 0 0
VODI 0 2 2 553 223 6 0 0
ODI 0 0 0 81 181 24 0 0
CDI 0 0 0 3 77 98 90 0
VCDI 0 0 0 0 0 19 2 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 12988 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 12988 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3460 2049 39 101 65 0 0 0
OW 0 3 0 10 31 0 0 0
VODI 0 0 0 6 27 0 0 0
ODI 0 0 0 0 12 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 3460 2049 39 106 79 0 0 0
OW 0 3 0 1 33 0 0 0
VODI 0 0 0 8 14 0 0 0
ODI 0 0 0 2 9 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 7501 675 43 96 3 0 0 0
OW 0 0 4 66 38 0 0 0
VODI 0 0 0 34 58 0 0 0
ODI 0 0 0 2 67 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 7501 675 44 108 4 0 0 0
OW 0 0 3 81 76 0 0 0
VODI 0 0 0 9 70 0 0 0
ODI 0 0 0 0 16 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 20209 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 20209 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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