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: 2024-04-04

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: 2024-04-08

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 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 3 0 0 0
CDI 0 0 0 0 5 32 1 0
VCDI 0 0 0 0 0 78 3294 33488
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 4 0 0 0
CDI 0 0 0 0 4 44 11 0
VCDI 0 0 0 0 0 66 3284 33488

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 9 4 0
VCDI 0 0 0 0 24 126 405 2551
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 6 0
VCDI 0 0 0 0 24 135 403 2551

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 8 9 0
VCDI 0 0 0 0 0 162 1993 7806
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 17 146 0
VCDI 0 0 0 0 0 153 1856 7806

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 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 0 177 5476
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 0 177 5476

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 9
VCDI 0 0 0 0 0 0 404 6811
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 5
VCDI 0 0 0 0 0 0 404 6815

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 1 3 0
VCDI 0 0 0 0 0 118 2278 2899
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 8 6 1
VCDI 0 0 0 0 0 111 2275 2898

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 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 97 14 0
VCDI 0 0 0 0 0 53 3020 3133
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 93 13 0
VCDI 0 0 0 0 0 57 3021 3133

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2138 2964 23 0 0 0 0 0
OW 0 309 150 68 0 0 0 0
VODI 0 4 56 487 72 0 0 0
ODI 0 1 2 100 556 29 0 0
CDI 0 0 8 56 280 727 86 0
VCDI 0 0 0 34 91 550 2531 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2138 2794 19 0 0 0 0 0
OW 0 352 66 53 0 0 0 0
VODI 0 113 108 346 82 2 0 0
ODI 0 14 25 169 477 82 0 0
CDI 0 4 11 82 275 624 1081 0
VCDI 0 1 10 95 165 598 1536 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 4004 3113 37 13 0 0 0 0
OW 0 177 112 94 0 0 0 0
VODI 0 9 6 236 30 0 0 0
ODI 0 0 7 54 148 2 0 0
CDI 0 0 0 30 268 397 36 0
VCDI 0 0 0 0 7 137 2306 473
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4004 3016 33 13 0 0 0 0
OW 0 213 75 102 0 0 0 0
VODI 0 52 31 141 32 0 0 0
ODI 0 18 16 85 89 3 0 0
CDI 0 0 7 86 302 335 219 0
VCDI 0 0 0 0 30 198 2123 473

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7511 3142 74 35 0 0 0 0
OW 0 56 102 154 2 0 0 0
VODI 0 0 5 225 62 0 0 0
ODI 0 0 0 43 153 12 0 0
CDI 0 0 0 9 211 357 32 0
VCDI 0 0 0 0 3 293 506 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7511 3121 92 59 0 0 0 0
OW 0 59 57 173 33 0 0 0
VODI 0 18 21 131 71 5 0 0
ODI 0 0 11 59 95 28 0 0
CDI 0 0 0 41 187 214 28 0
VCDI 0 0 0 3 45 415 510 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 5 0 0 0 0 0 0
OW 0 35 22 13 0 0 0 0
VODI 0 1 6 73 38 0 0 0
ODI 0 0 0 33 47 0 0 0
CDI 0 0 0 0 93 385 36 0
VCDI 0 0 0 0 13 434 3289 1280
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 4 0 0 2 0 0 0
VODI 0 34 13 31 21 0 0 0
ODI 0 3 15 64 38 0 0 0
CDI 0 0 0 24 112 327 96 0
VCDI 0 0 0 0 18 492 3229 1280

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 2 0
ODI 0 0 0 0 0 3 4 0
CDI 0 0 0 0 0 58 46 30
VCDI 0 0 0 0 23 883 5035 2454
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 2 0
ODI 0 0 0 0 0 4 5 0
CDI 0 0 0 0 0 53 106 35
VCDI 0 0 0 0 23 887 4974 2449

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6690 4744 40 77 20 0 0 0
OW 0 311 178 142 40 0 0 0
VODI 0 4 18 410 39 7 0 0
ODI 0 0 0 120 371 56 1 0
CDI 0 0 0 3 373 888 78 0
VCDI 0 0 0 0 15 414 707 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6690 4540 33 65 33 0 0 0
OW 0 407 120 129 47 6 0 0
VODI 0 107 58 229 16 16 0 0
ODI 0 5 25 191 128 46 6 0
CDI 0 0 0 138 599 836 279 0
VCDI 0 0 0 0 35 461 501 0


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