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: 2022-10-20

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-10-24

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 0 886 13 44 4 0 0 0
OW 0 87 23 145 12 0 0 0
VODI 0 45 9 179 158 5 0 0
ODI 0 6 6 68 323 68 0 0
CDI 0 0 0 71 222 604 64 0
VCDI 0 0 0 16 228 1511 10387 21718
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 789 8 47 3 0 0 0
OW 0 143 18 60 13 0 0 0
VODI 0 63 10 198 205 47 2 0
ODI 0 19 7 77 191 152 41 0
CDI 0 10 6 70 167 318 110 0
VCDI 0 0 2 71 368 1671 10298 21718

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 0 254 24 71 0 0 0 0
OW 0 11 3 26 0 0 0 0
VODI 0 19 4 94 17 0 0 0
ODI 0 0 0 15 142 5 0 0
CDI 0 0 0 0 69 286 0 0
VCDI 0 0 0 0 23 693 490 887
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 239 20 56 0 0 0 0
OW 0 41 10 52 10 0 0 0
VODI 0 4 1 98 91 0 0 0
ODI 0 0 0 0 34 4 0 0
CDI 0 0 0 0 50 67 0 0
VCDI 0 0 0 0 66 913 490 887

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 942 19 105 9 0 0 0
OW 0 135 23 232 40 0 0 0
VODI 0 15 0 120 270 7 0 0
ODI 0 0 0 5 676 135 0 0
CDI 0 0 0 0 101 583 0 0
VCDI 0 0 0 0 0 554 3711 2300
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 864 33 208 39 0 0 0
OW 0 153 6 156 176 13 0 0
VODI 0 75 3 88 602 120 0 0
ODI 0 0 0 10 210 183 0 0
CDI 0 0 0 0 65 306 4 0
VCDI 0 0 0 0 4 657 3707 2300

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3110 2172 8 44 6 0 0 0
OW 3 97 10 44 15 0 0 0
VODI 0 1 0 11 58 0 0 0
ODI 0 0 0 0 34 25 0 0
CDI 0 0 0 0 0 16 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 3111 1838 9 38 16 0 0 0
OW 2 360 9 61 71 5 0 0
VODI 0 57 0 0 26 18 0 0
ODI 0 14 0 0 0 12 0 0
CDI 0 1 0 0 0 6 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 0 934 19 55 0 0 0 0
OW 0 530 61 272 24 0 0 0
VODI 0 87 21 649 236 3 0 0
ODI 0 0 0 42 797 115 0 0
CDI 0 0 0 1 119 1114 93 0
VCDI 0 0 0 0 0 618 1456 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 840 22 118 9 0 0 0
OW 0 374 32 229 64 8 0 0
VODI 0 332 45 543 387 57 3 0
ODI 0 5 2 105 453 319 26 0
CDI 0 0 0 22 218 597 124 0
VCDI 0 0 0 2 45 869 1396 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 0 701 26 84 1 0 0 0
OW 0 291 28 225 29 0 0 0
VODI 0 67 13 222 254 3 0 0
ODI 0 0 0 18 340 78 0 0
CDI 0 0 0 2 87 797 2 0
VCDI 0 0 0 0 9 581 1416 52
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 751 37 173 47 0 0 0
OW 0 231 20 170 138 16 0 0
VODI 0 77 10 191 254 173 0 0
ODI 0 0 0 15 175 310 1 0
CDI 0 0 0 2 91 360 10 0
VCDI 0 0 0 0 15 600 1407 52

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3291 2533 15 72 5 0 0 0
OW 0 43 19 78 27 0 0 0
VODI 0 0 0 58 86 0 0 0
ODI 0 0 0 0 101 0 0 0
CDI 0 0 0 0 3 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 3290 2415 16 93 11 0 0 0
OW 1 157 14 58 47 0 0 0
VODI 0 4 4 56 135 0 0 0
ODI 0 0 0 1 27 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 9797 1487 9 19 0 0 0 0
OW 0 5 3 9 2 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 9797 1490 10 26 0 0 0 0
OW 0 2 2 2 2 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 6920 2455 13 95 75 31 0 0
OW 0 68 10 41 28 49 0 0
VODI 0 28 12 72 42 73 0 0
ODI 0 4 1 57 42 37 0 0
CDI 0 0 0 39 94 57 0 0
VCDI 0 0 0 0 92 387 874 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6920 2389 13 99 120 146 0 0
OW 0 80 6 35 13 17 0 0
VODI 0 71 11 35 21 20 0 0
ODI 0 11 5 58 28 16 0 0
CDI 0 4 1 63 97 48 0 0
VCDI 0 0 0 14 94 387 874 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 12289 686 5 8 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 12289 686 5 8 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 2506 1929 19 201 228 15 0 0
OW 0 15 8 39 35 14 0 0
VODI 0 5 3 64 51 23 0 0
ODI 0 0 0 21 78 53 0 0
CDI 0 0 0 13 48 129 0 0
VCDI 0 0 0 9 99 177 21 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2506 1904 16 187 248 41 0 0
OW 0 23 3 25 26 21 0 0
VODI 0 17 7 35 19 38 0 0
ODI 0 5 4 43 39 40 0 0
CDI 0 0 0 29 60 70 0 0
VCDI 0 0 0 28 147 201 21 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 5692 2837 18 30 1 0 0 0
OW 0 8 1 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 5692 2824 17 30 1 0 0 0
OW 0 21 2 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

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 19806 381 5 17 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 19806 381 5 12 0 0 0 0
OW 0 0 0 5 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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