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: 2024-11-21

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: 2024-11-25

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 45 828 43 13 0 0 0 0
OW 0 37 42 64 6 0 0 0
VODI 0 0 12 130 47 2 0 0
ODI 0 0 0 28 134 19 0 0
CDI 0 0 0 14 112 365 23 0
VCDI 0 0 0 0 17 1262 6074 27585
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 45 771 44 44 3 0 0 0
OW 0 87 39 80 12 0 0 0
VODI 0 7 10 78 77 2 0 0
ODI 0 0 4 25 95 15 0 0
CDI 0 0 0 22 111 331 22 0
VCDI 0 0 0 0 18 1300 6075 27585

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 5 0 0 0
VODI 0 0 0 0 47 1 0 0
ODI 0 0 0 0 35 17 0 0
CDI 0 0 0 0 30 148 0 0
VCDI 0 0 0 0 0 434 1190 1212
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 24 0 0 0
VODI 0 0 0 0 79 32 0 0
ODI 0 0 0 0 13 32 0 0
CDI 0 0 0 0 1 99 0 0
VCDI 0 0 0 0 0 437 1190 1212

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 99 8 4
VCDI 0 0 0 0 0 293 1776 7798
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 2 0 0
ODI 0 0 0 0 0 12 0 0
CDI 0 0 0 0 0 83 7 3
VCDI 0 0 0 0 0 295 1777 7799

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 309 42 45 3 0 0 0
OW 0 72 55 158 43 0 0 0
VODI 0 24 25 295 210 7 0 0
ODI 0 1 1 41 376 45 0 0
CDI 0 0 0 0 117 373 0 0
VCDI 0 0 0 0 10 396 1752 1253
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 317 44 76 67 0 0 0
OW 0 56 39 159 114 0 0 0
VODI 0 13 25 212 162 62 0 0
ODI 0 17 14 70 165 47 0 0
CDI 0 3 1 21 181 138 0 0
VCDI 0 0 0 1 70 574 1752 1253

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 3 0 0
VCDI 0 0 0 0 0 34 2028 5159
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 3 0 0
VCDI 0 0 0 0 0 34 2028 5159

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 1 0 0
ODI 0 0 0 0 2 14 0 0
CDI 0 0 0 0 10 163 5 0
VCDI 0 0 0 0 1 471 2977 1655
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 2 0 0
ODI 0 0 0 0 2 13 0 0
CDI 0 0 0 0 10 126 2 0
VCDI 0 0 0 0 1 508 2980 1655

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 18 1316 35 3 0 0 0 0
OW 3 235 105 75 0 0 0 0
VODI 1 10 8 244 34 0 0 0
ODI 0 2 0 57 222 15 0 0
CDI 0 2 0 13 184 680 1 0
VCDI 0 9 0 0 1 639 2405 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14 1257 34 27 0 0 0 0
OW 7 198 62 100 36 0 0 0
VODI 1 94 34 120 122 17 0 0
ODI 0 14 18 80 61 38 0 0
CDI 0 2 0 61 184 291 0 0
VCDI 0 9 0 4 38 988 2406 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 9726 1331 35 18 0 0 0 0
OW 7 36 17 47 0 0 0 0
VODI 0 5 0 38 24 0 0 0
ODI 0 0 0 0 32 0 0 0
CDI 0 0 0 0 0 6 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 9724 1299 51 76 5 0 0 0
OW 9 57 1 26 39 0 0 0
VODI 0 16 0 1 12 4 0 0
ODI 0 0 0 0 0 2 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 6540 2200 1 0 0 0 0 0
OW 0 185 92 20 0 0 0 0
VODI 0 0 31 176 9 0 0 0
ODI 0 0 0 78 59 0 0 0
CDI 0 0 0 16 210 237 17 0
VCDI 0 0 0 0 16 279 1485 45
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6540 2050 1 0 0 0 0 0
OW 0 259 18 10 0 0 0 0
VODI 0 75 88 71 1 0 0 0
ODI 0 1 17 142 34 0 0 0
CDI 0 0 0 67 233 219 16 0
VCDI 0 0 0 0 26 297 1486 45

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9361 2317 73 88 1 0 0 0
OW 0 53 43 107 19 0 0 0
VODI 0 0 2 125 131 4 0 0
ODI 0 0 0 8 209 109 0 0
CDI 0 0 0 0 55 273 9 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 9360 2338 92 124 0 0 0 0
OW 1 32 25 131 85 15 0 0
VODI 0 0 1 59 133 113 0 0
ODI 0 0 0 14 145 111 3 0
CDI 0 0 0 0 52 147 6 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 264 1469 53 41 0 0 0 0
OW 0 82 85 234 11 0 0 0
VODI 0 0 10 269 84 0 0 0
ODI 0 0 0 56 302 34 0 0
CDI 0 0 0 0 159 616 30 0
VCDI 0 0 0 0 38 947 1019 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 264 1428 73 125 0 0 0 0
OW 0 114 64 274 50 0 0 0
VODI 0 9 11 181 280 10 0 0
ODI 0 0 0 20 103 279 32 0
CDI 0 0 0 0 112 389 182 0
VCDI 0 0 0 0 49 919 835 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 6356 1651 29 16 0 0 0 0
OW 10 86 32 54 1 0 0 0
VODI 0 10 3 140 20 0 0 0
ODI 0 0 0 49 47 0 0 0
CDI 0 0 0 15 7 0 0 0
VCDI 0 0 0 1 11 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 6354 1584 30 14 0 0 0 0
OW 12 127 23 61 2 0 0 0
VODI 0 32 10 71 22 0 0 0
ODI 0 4 1 48 10 0 0 0
CDI 0 0 0 36 29 0 0 0
VCDI 0 0 0 45 23 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 15620 122 4 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 15620 122 4 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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