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: 2024-05-02

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: 2024-05-06

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 2 1 0 0 0
VODI 0 0 2 20 3 0 0 0
ODI 0 2 2 15 18 1 0 0
CDI 0 6 12 33 135 392 38 0
VCDI 0 0 0 1 56 650 5322 30191
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 4 0 0 0 0
VODI 0 0 0 13 3 0 0 0
ODI 0 0 0 3 6 0 0 0
CDI 0 8 14 37 117 155 27 0
VCDI 0 0 2 14 87 888 5333 30191

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 1 0 0 0
CDI 0 0 0 0 1 32 1 1
VCDI 0 0 0 0 30 245 1123 1685
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 4 2 1
VCDI 0 0 0 0 32 273 1122 1685

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 2 0 0
ODI 0 0 0 0 0 9 0 0
CDI 0 0 0 0 2 54 6 0
VCDI 0 0 0 0 2 340 2551 7012
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 0 13 2 0
CDI 0 0 0 0 2 41 60 0
VCDI 0 0 0 0 2 350 2495 7012

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 1 0 0
CDI 0 0 0 0 20 19 1 0
VCDI 0 0 0 0 105 435 2527 2545
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 9 7 1 0
VCDI 0 0 0 0 116 448 2527 2545

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 2 0 0
CDI 0 0 0 0 30 67 28 0
VCDI 0 0 0 0 0 206 4591 2300
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 4 1 0
CDI 0 0 0 0 28 65 127 0
VCDI 0 0 0 0 2 206 4491 2300

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 1 0 0 0
CDI 0 0 0 0 29 11 6 2
VCDI 0 0 0 0 69 281 2480 2420
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 1 0 0 0
CDI 0 0 0 0 31 17 145 11
VCDI 0 0 0 0 67 275 2341 2411

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 1 0 0 0 0
VODI 0 0 0 2 3 1 0 0
ODI 0 0 0 3 13 10 2 0
CDI 0 0 0 11 114 131 28 0
VCDI 0 0 0 6 90 555 3986 1361
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 1 1 1 0 0
ODI 0 0 0 2 8 4 2 0
CDI 0 0 0 5 67 85 106 0
VCDI 0 0 0 15 144 607 3908 1361

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3162 2610 3 6 0 0 0 0
OW 0 654 198 54 0 0 0 0
VODI 0 3 35 504 88 7 0 0
ODI 0 0 0 108 571 24 0 0
CDI 0 0 0 14 329 1057 100 0
VCDI 0 0 0 2 84 414 1295 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3162 2244 2 6 0 0 0 0
OW 0 828 87 45 15 0 0 0
VODI 0 191 132 360 148 5 0 0
ODI 0 4 13 186 379 97 1 0
CDI 0 0 2 82 389 785 847 0
VCDI 0 0 0 9 141 615 547 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 4991 2812 13 0 0 0 0 0
OW 0 284 131 68 0 0 0 0
VODI 0 5 17 325 41 0 0 0
ODI 0 0 0 78 303 14 0 0
CDI 0 0 0 2 324 1847 47 0
VCDI 0 0 0 0 0 93 301 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4991 2642 19 1 0 0 0 0
OW 0 335 50 47 0 0 0 0
VODI 0 103 63 181 17 0 0 0
ODI 0 17 25 143 124 6 1 0
CDI 0 4 4 101 501 1657 106 0
VCDI 0 0 0 0 26 291 241 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 7926 3009 21 20 1 0 0 0
OW 0 212 155 103 8 0 0 0
VODI 0 1 10 279 59 6 0 0
ODI 0 0 0 27 202 26 0 0
CDI 0 0 0 0 120 280 27 0
VCDI 0 0 0 0 0 52 443 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7926 2931 22 24 5 0 0 0
OW 0 227 105 101 31 6 0 0
VODI 0 64 47 181 66 32 7 0
ODI 0 0 12 110 87 39 23 0
CDI 0 0 0 13 201 218 123 0
VCDI 0 0 0 0 0 69 317 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 0 122 0 0 0 0 0 0
OW 0 120 43 17 0 0 0 0
VODI 0 0 6 94 11 0 0 0
ODI 0 0 0 28 80 0 0 0
CDI 0 0 0 0 181 521 57 0
VCDI 0 0 0 0 32 373 3924 194
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 92 0 0 0 0 0 0
OW 0 109 9 3 0 0 0 0
VODI 0 39 30 43 0 0 0 0
ODI 0 2 10 62 30 0 0 0
CDI 0 0 0 31 224 501 528 0
VCDI 0 0 0 0 50 393 3453 194

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 2 0 3 0 0 0 0
OW 0 23 4 21 3 0 0 0
VODI 0 50 15 61 39 2 0 0
ODI 0 34 21 84 102 35 0 0
CDI 0 3 9 139 495 1020 32 0
VCDI 0 0 0 91 451 1315 4474 10
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 9 1 0 0 0
VODI 0 4 3 23 25 17 0 0
ODI 0 14 2 43 67 42 3 0
CDI 0 81 18 101 330 727 156 0
VCDI 0 13 26 223 667 1586 4347 10

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9099 3424 37 18 0 0 0 0
OW 0 200 93 90 0 0 0 0
VODI 0 11 6 306 121 10 0 0
ODI 0 1 1 107 380 35 1 0
CDI 0 0 0 1 429 875 73 0
VCDI 0 0 0 0 63 145 220 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9028 3262 36 30 0 0 0 0
OW 71 310 70 92 8 0 0 0
VODI 0 41 25 188 89 5 0 0
ODI 0 22 2 104 252 75 0 0
CDI 0 1 4 108 487 726 221 0
VCDI 0 0 0 0 157 259 73 0


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