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: 2022-04-21

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-04-25

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 18 28 3 0 0
OW 0 0 0 7 14 11 0 0
VODI 0 0 0 4 13 20 0 0
ODI 0 0 0 0 17 39 9 0
CDI 0 0 0 0 3 54 44 0
VCDI 0 0 0 0 1 597 5128 30892
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 23 35 9 0 0
OW 0 0 0 4 13 21 0 0
VODI 0 0 0 2 15 33 9 0
ODI 0 0 0 0 11 29 17 0
CDI 0 0 0 0 1 52 57 0
VCDI 0 0 0 0 1 580 5098 30892

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 1 315 2817
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 1 315 2817

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 30 8 0
VCDI 0 0 0 0 0 103 1617 8224
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 1 0 0
CDI 0 0 0 0 0 62 19 0
VCDI 0 0 0 0 0 70 1606 8224

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 14 1 0 0
ODI 0 0 0 0 20 1 0 0
CDI 0 0 0 0 20 19 4 0
VCDI 0 0 0 0 79 313 1894 3289
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 1 0 0 0
VODI 0 0 0 0 7 0 0 0
ODI 0 0 0 0 11 3 8 0
CDI 0 0 0 0 20 28 37 0
VCDI 0 0 0 0 94 303 1853 3289

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 0
VCDI 0 0 0 0 0 0 0 7246

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 0 0
VCDI 0 0 0 0 0 0 0 5326
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 5326

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 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 5 0 0
ODI 0 0 0 0 0 15 0 0
CDI 0 0 0 0 0 33 6 4
VCDI 0 0 0 0 0 153 4222 1893
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 5 0 0
VODI 0 0 0 0 0 13 0 0
ODI 0 0 0 0 0 14 0 0
CDI 0 0 0 0 0 26 9 17
VCDI 0 0 0 0 0 148 4219 1880

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3600 3212 27 192 69 0 0 0
OW 0 188 24 206 74 3 0 0
VODI 0 10 5 235 223 20 0 0
ODI 0 0 0 14 259 40 0 0
CDI 0 0 0 0 160 211 1 0
VCDI 0 0 0 0 42 1092 1424 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3600 3148 25 195 84 0 0 0
OW 0 205 18 164 93 11 0 0
VODI 0 53 12 204 195 26 0 0
ODI 0 4 1 76 166 58 0 0
CDI 0 0 0 8 198 155 4 0
VCDI 0 0 0 0 91 1116 1421 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 4540 3351 29 151 23 0 0 0
OW 0 60 7 90 50 0 0 0
VODI 0 13 8 84 94 0 0 0
ODI 0 5 0 36 116 22 0 0
CDI 0 0 1 27 243 479 83 0
VCDI 0 0 0 0 31 917 1236 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4540 3310 24 165 48 0 0 0
OW 0 70 11 59 77 1 0 0
VODI 0 35 6 59 90 22 0 0
ODI 0 11 3 49 61 72 0 0
CDI 0 3 1 56 170 349 180 0
VCDI 0 0 0 0 111 974 1139 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 8034 3355 47 202 153 51 0 0
OW 0 53 8 80 56 1 0 0
VODI 0 6 11 81 89 5 0 0
ODI 0 0 0 15 148 33 1 0
CDI 0 0 0 0 56 394 65 0
VCDI 0 0 0 0 0 3 41 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8034 3372 47 264 221 51 0 0
OW 0 41 11 48 69 4 0 0
VODI 0 1 8 48 91 50 0 0
ODI 0 0 0 18 91 113 5 0
CDI 0 0 0 0 30 269 102 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 0 2 2 5 0 0 0 0
OW 0 0 0 11 5 0 0 0
VODI 0 0 0 15 27 0 0 0
ODI 0 0 0 17 54 0 0 0
CDI 0 0 0 5 51 26 0 0
VCDI 0 0 0 0 12 351 2773 2447
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2 1 2 0 0 0 0
OW 0 0 1 9 0 0 0 0
VODI 0 0 0 11 13 0 0 0
ODI 0 0 0 8 22 0 0 0
CDI 0 0 0 20 80 11 0 0
VCDI 0 0 0 3 34 366 2773 2447

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 2 0 0 0
CDI 0 0 0 0 77 106 25 0
VCDI 0 0 0 0 117 1055 4339 2866
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 2 10 0 0
CDI 0 0 0 0 32 57 51 0
VCDI 0 0 0 0 162 1094 4313 2866

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10623 4957 58 228 28 0 0 0
OW 0 80 20 243 149 0 0 0
VODI 0 0 0 105 495 14 0 0
ODI 0 0 0 0 361 245 0 0
CDI 0 0 0 0 188 613 125 0
VCDI 0 0 0 0 11 481 1185 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10623 5024 73 433 234 0 0 0
OW 0 13 5 120 300 10 0 0
VODI 0 0 0 21 239 173 4 0
ODI 0 0 0 2 234 278 29 0
CDI 0 0 0 0 102 280 229 0
VCDI 0 0 0 0 123 612 1048 0


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