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: 2024-07-18

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: 2024-07-22

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 0 341 6 1 0 0 0 0
OW 0 358 103 47 4 0 0 0
VODI 0 0 21 765 100 0 0 0
ODI 0 0 0 62 5964 524 0 0
CDI 0 0 0 0 1970 23985 301 0
VCDI 0 0 0 0 0 927 1423 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 290 6 0 0 0 0 0
OW 0 269 46 53 9 0 0 0
VODI 0 128 66 539 242 14 0 0
ODI 0 12 12 278 3218 2656 0 0
CDI 0 0 0 5 4568 20723 1100 0
VCDI 0 0 0 0 1 2043 624 0

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 289 28 0 0 0 0 0 0
OW 3 22 0 5 4 0 0 0
VODI 0 33 0 84 23 0 0 0
ODI 0 38 0 12 49 0 0 0
CDI 0 93 10 54 509 440 0 0
VCDI 0 0 0 0 742 681 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 284 23 0 0 0 0 0 0
OW 1 12 0 43 12 0 0 0
VODI 2 26 0 47 18 0 0 0
ODI 2 5 0 10 31 0 0 0
CDI 3 97 6 31 362 208 0 0
VCDI 0 51 4 24 904 913 0 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 426 1336 3 0 0 0 0 0
OW 0 387 197 75 0 0 0 0
VODI 0 1 13 1382 202 0 0 0
ODI 0 0 0 62 2891 85 0 0
CDI 0 0 0 0 293 2605 0 0
VCDI 0 0 0 0 0 20 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 426 1223 19 3 0 0 0 0
OW 0 367 88 131 0 0 0 0
VODI 0 134 106 1117 545 0 0 0
ODI 0 0 0 254 1466 0 0 0
CDI 0 0 0 14 1375 2620 0 0
VCDI 0 0 0 0 0 90 0 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 85 1209 0 0 0 0 0 0
OW 0 281 147 68 0 0 0 0
VODI 0 1 5 965 118 0 0 0
ODI 0 0 0 21 1694 52 0 0
CDI 0 0 0 0 296 711 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 85 1026 0 1 0 0 0 0
OW 0 412 80 75 4 0 0 0
VODI 0 53 72 760 286 0 0 0
ODI 0 0 0 214 880 66 0 0
CDI 0 0 0 4 938 697 0 0
VCDI 0 0 0 0 0 0 0 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3 1051 0 0 0 0 0 0
OW 27 973 223 107 0 0 0 0
VODI 0 46 9 1201 143 0 0 0
ODI 0 3 0 65 3256 0 0 0
CDI 0 0 0 0 117 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 1 740 11 0 0 0 0 0
OW 6 882 78 114 0 0 0 0
VODI 23 292 103 634 288 0 0 0
ODI 0 137 40 552 1168 0 0 0
CDI 0 22 0 73 2060 0 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2200 1480 0 0 0 0 0 0
OW 53 252 122 56 0 0 0 0
VODI 0 1 16 386 50 0 0 0
ODI 0 0 0 5 674 4 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 2131 1363 8 2 0 0 0 0
OW 122 325 84 86 0 0 0 0
VODI 0 45 46 359 620 4 0 0
ODI 0 0 0 0 104 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 719 3263 9 2 0 0 0 0
OW 34 767 304 132 2 0 0 0
VODI 0 3 15 811 119 0 0 0
ODI 0 0 1 5 123 0 0 0
CDI 0 0 0 3 5 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 643 2790 19 9 0 0 0 0
OW 94 1076 141 174 5 0 0 0
VODI 16 165 168 712 191 0 0 0
ODI 0 2 0 50 49 0 0 0
CDI 0 0 1 8 4 0 0 0
VCDI 0 0 0 0 0 0 0 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 10812 497 0 0 0 0 0 0
OW 0 13 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 10812 477 0 0 0 0 0 0
OW 0 33 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7200 2387 2 2 0 0 0 0
OW 0 311 62 72 0 0 0 0
VODI 0 11 14 772 121 1 0 0
ODI 0 0 0 68 521 30 0 0
CDI 0 0 0 0 11 106 5 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 7200 2194 5 1 0 0 0 0
OW 0 462 52 117 7 0 0 0
VODI 0 53 21 481 113 10 0 0
ODI 0 0 0 313 484 63 4 0
CDI 0 0 0 2 49 64 1 0
VCDI 0 0 0 0 0 0 0 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 10827 1781 18 5 0 0 0 0
OW 0 121 55 62 0 0 0 0
VODI 0 0 3 92 23 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 10827 1666 8 2 0 0 0 0
OW 0 232 59 82 0 0 0 0
VODI 0 4 9 75 23 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 714 2842 14 1 0 0 0 0
OW 0 724 213 169 1 0 0 0
VODI 0 0 5 957 81 0 0 0
ODI 0 0 0 8 12 0 0 0
CDI 0 0 0 8 54 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 714 2547 12 0 0 0 0 0
OW 0 784 100 140 12 0 0 0
VODI 0 235 120 954 75 0 0 0
ODI 0 0 0 36 6 0 0 0
CDI 0 0 0 13 55 0 0 0
VCDI 0 0 0 0 0 0 0 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 4206 2686 24 35 0 0 0 0
OW 0 238 124 205 6 0 0 0
VODI 0 6 6 647 117 0 0 0
ODI 0 0 0 11 227 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 4206 2555 41 36 0 0 0 0
OW 0 329 91 285 39 0 0 0
VODI 0 46 22 571 229 0 0 0
ODI 0 0 0 6 82 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 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 14609 927 9 8 0 0 0 0
OW 0 41 37 31 0 0 0 0
VODI 0 2 0 38 17 0 0 0
ODI 0 0 0 0 27 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 14609 892 11 7 0 0 0 0
OW 0 72 34 51 0 0 0 0
VODI 0 6 1 19 36 0 0 0
ODI 0 0 0 0 8 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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