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: 2024-03-28

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: 2024-04-01

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 4 0 0 0
ODI 0 0 0 0 7 0 0 0
CDI 0 0 0 0 7 28 0 0
VCDI 0 0 0 0 0 212 3856 32788
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 5 0 0 0
ODI 0 0 0 0 8 1 0 0
CDI 0 0 0 0 4 20 0 0
VCDI 0 0 0 0 1 219 3856 32788

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 0 100 239 2780
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 2
VCDI 0 0 0 0 0 100 239 2778

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 6 0 0
CDI 0 0 0 0 5 65 7 11
VCDI 0 0 0 0 73 481 2217 7113
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 15 0 0
CDI 0 0 0 0 8 79 18 32
VCDI 0 0 0 0 70 458 2206 7092

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 0 132 1641 3880
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 0 132 1641 3880

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 7224
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 7224

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 5299
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 8
VCDI 0 0 0 0 0 0 0 5291

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 23 13 0 0 0
VCDI 0 0 0 19 49 106 1464 4643
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 4
VCDI 0 0 0 42 62 106 1464 4639

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2084 3203 44 1 0 0 0 0
OW 0 139 170 120 0 0 0 0
VODI 0 4 22 501 110 0 0 0
ODI 0 0 0 92 506 36 0 0
CDI 0 0 0 71 302 1093 105 0
VCDI 0 0 0 0 27 486 2205 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2084 3126 39 21 0 0 0 0
OW 0 185 140 180 25 0 0 0
VODI 0 30 45 333 264 9 0 0
ODI 0 5 9 86 278 317 0 0
CDI 0 0 3 101 245 719 881 0
VCDI 0 0 0 64 133 570 1429 1

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4027 3136 41 10 0 0 0 0
OW 0 201 97 107 1 0 0 0
VODI 0 16 45 246 46 0 0 0
ODI 0 0 4 71 182 2 0 0
CDI 0 0 0 53 215 309 53 0
VCDI 0 0 0 0 29 235 2378 192
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4027 3018 43 18 0 0 0 0
OW 0 240 76 162 17 0 0 0
VODI 0 88 38 116 75 2 0 0
ODI 0 7 22 92 128 13 0 0
CDI 0 0 8 97 161 280 130 0
VCDI 0 0 0 2 92 251 2301 192

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7500 3153 86 104 2 0 0 0
OW 0 58 69 167 14 0 0 0
VODI 0 2 14 139 78 0 0 0
ODI 0 0 1 70 84 7 0 0
CDI 0 0 0 55 179 177 18 0
VCDI 0 0 0 2 97 359 552 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7500 3131 91 132 3 0 0 0
OW 0 54 34 154 25 0 0 0
VODI 0 23 23 91 90 4 0 0
ODI 0 5 14 52 82 13 0 0
CDI 0 0 8 87 127 180 7 0
VCDI 0 0 0 21 127 346 563 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 0 0 0 0 0 0 0
OW 0 31 13 2 0 0 0 0
VODI 0 0 3 80 34 3 0 0
ODI 0 0 0 26 37 6 0 0
CDI 0 0 0 7 113 328 7 1
VCDI 0 0 0 0 11 466 2934 1701
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 7 0 1 2 2 0 0
VODI 0 24 6 33 17 4 0 0
ODI 0 0 10 42 23 3 0 0
CDI 0 0 0 39 140 129 21 10
VCDI 0 0 0 0 13 665 2920 1692

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 0 0 1 0
CDI 0 0 0 0 1 5 27 4
VCDI 0 0 0 0 67 964 4596 2873
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 3 0
CDI 0 0 0 0 0 2 34 4
VCDI 0 0 0 0 68 967 4587 2873

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6944 4298 22 52 22 0 0 0
OW 0 488 118 117 28 2 0 0
VODI 0 29 57 285 87 13 0 0
ODI 0 0 6 154 383 58 0 0
CDI 0 0 0 103 383 244 14 0
VCDI 0 0 0 26 260 624 929 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6944 3952 13 44 8 0 0 0
OW 0 451 27 81 47 10 0 0
VODI 0 292 70 74 116 22 0 0
ODI 0 117 74 262 226 52 0 0
CDI 0 3 19 206 410 165 12 0
VCDI 0 0 0 70 356 692 931 0


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