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: 2024-02-08

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: 2024-02-12

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 72 18 24 0 0 0 0
OW 0 30 11 41 8 0 0 0
VODI 0 0 4 33 73 0 0 0
ODI 0 0 1 12 110 30 0 0
CDI 0 0 0 18 118 228 40 0
VCDI 0 0 0 5 88 883 4634 30421
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 45 18 46 10 0 0 0
OW 0 44 5 24 34 1 0 0
VODI 0 11 5 20 69 21 0 0
ODI 0 2 4 10 72 42 7 0
CDI 0 0 2 19 87 148 115 2
VCDI 0 0 0 14 125 929 4552 30419

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 0 76 3043
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 76 3043

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 0 0 0
VCDI 0 0 0 0 0 0 291 9687
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 0 291 9687

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 0 111 1800 3742
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 0 111 1800 3742

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 48 594 4657
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 48 594 4657

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 5 0 0 0 0 0 0
OW 0 70 14 15 0 0 0 0
VODI 0 33 8 90 16 0 0 0
ODI 0 27 5 12 33 0 0 0
CDI 0 10 10 35 33 44 0 0
VCDI 0 6 2 35 122 1225 4273 194
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 40 1 17 0 0 0 0
VODI 0 40 17 49 3 0 0 0
ODI 0 7 2 25 19 0 0 0
CDI 0 13 3 25 41 3 3 1
VCDI 0 51 16 71 141 1266 4270 193

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3299 3631 45 15 0 0 0 0
OW 0 528 182 130 0 0 0 0
VODI 0 91 29 434 85 1 0 0
ODI 0 21 5 116 160 11 0 0
CDI 0 40 22 96 429 439 33 0
VCDI 0 7 12 168 187 470 636 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3299 3690 61 40 0 0 0 0
OW 0 248 120 214 21 0 0 0
VODI 0 151 44 224 108 0 0 0
ODI 0 74 11 97 102 37 0 0
CDI 0 70 15 95 230 270 94 0
VCDI 0 85 44 289 400 614 575 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 3281 4063 159 215 0 0 0 0
OW 0 181 86 160 14 0 0 0
VODI 0 11 27 298 57 0 0 0
ODI 0 0 5 89 122 27 0 0
CDI 0 0 0 82 174 244 35 0
VCDI 0 0 0 2 55 618 1491 200
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3281 4010 147 259 1 0 0 0
OW 0 138 50 181 28 0 0 0
VODI 0 70 31 165 71 3 0 0
ODI 0 29 22 63 59 24 0 0
CDI 0 8 27 153 120 195 69 8
VCDI 0 0 0 25 143 667 1457 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 7438 3179 61 36 1 0 0 0
OW 0 43 123 141 27 2 0 0
VODI 0 0 11 175 95 8 0 0
ODI 0 0 0 68 141 30 0 0
CDI 0 0 0 25 146 147 7 0
VCDI 0 0 0 0 69 549 465 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7438 3029 47 38 5 0 0 0
OW 0 158 67 110 26 2 0 0
VODI 0 32 64 99 86 24 0 0
ODI 0 3 15 91 89 24 1 0
CDI 0 0 2 98 166 43 11 0
VCDI 0 0 0 9 107 643 460 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 0 1 1 0 0 0 0
VODI 0 0 5 23 14 0 0 0
ODI 0 1 1 6 23 9 0 0
CDI 0 0 0 34 71 144 36 0
VCDI 0 0 0 1 9 317 3055 2052
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 2 13 7 0 0 0
ODI 0 0 4 9 13 7 0 0
CDI 0 1 1 27 56 103 114 2
VCDI 0 0 0 16 41 360 2977 2050

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 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 461 3427 4650
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 0 461 3427 4650

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7206 3765 35 17 0 0 0 0
OW 69 315 135 171 4 0 0 0
VODI 0 21 25 359 157 3 0 0
ODI 0 0 6 45 413 112 0 0
CDI 0 0 0 34 220 476 0 0
VCDI 0 0 0 0 104 1204 850 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7249 3563 34 9 0 0 0 0
OW 26 379 75 142 1 0 0 0
VODI 0 140 62 214 99 6 0 0
ODI 0 18 24 191 349 67 0 0
CDI 0 1 6 69 308 557 17 0
VCDI 0 0 0 1 141 1165 833 0


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