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: 2024-07-11

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: 2024-07-15

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 0 244 0 1 0 0 0 0
OW 0 445 115 43 1 0 0 0
VODI 0 5 45 887 138 0 0 0
ODI 0 0 0 148 2634 139 1 0
CDI 0 0 0 0 1171 29648 329 0
VCDI 0 0 0 0 0 188 720 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 236 0 3 0 0 0 0
OW 0 265 60 113 16 0 0 0
VODI 0 179 83 534 305 0 0 0
ODI 0 14 17 379 1288 343 0 0
CDI 0 0 0 50 2075 26776 973 0
VCDI 0 0 0 0 260 2856 77 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 263 25 0 0 0 0 0 0
OW 20 34 7 7 2 0 0 0
VODI 1 18 2 43 28 0 0 0
ODI 3 5 0 0 25 3 0 0
CDI 5 45 4 68 88 718 2 0
VCDI 0 0 0 21 597 878 207 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 259 17 0 0 0 0 0 0
OW 0 32 4 11 19 0 0 0
VODI 10 11 5 39 22 3 0 0
ODI 11 15 0 0 21 7 0 0
CDI 11 38 2 4 67 299 4 0
VCDI 1 14 2 85 611 1290 205 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 350 1305 3 0 0 0 0 0
OW 0 235 118 110 0 0 0 0
VODI 0 2 0 480 127 0 0 0
ODI 0 0 0 18 2866 17 0 0
CDI 0 0 0 0 362 3902 37 0
VCDI 0 0 0 0 0 10 36 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 350 1086 0 0 0 0 0 0
OW 0 345 48 84 0 0 0 0
VODI 0 111 73 410 883 0 0 0
ODI 0 0 0 110 1391 69 0 0
CDI 0 0 0 4 1081 3835 73 0
VCDI 0 0 0 0 0 25 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 62 1173 27 45 0 0 0 0
OW 0 123 105 85 25 0 0 0
VODI 0 0 4 435 84 0 0 0
ODI 0 0 0 17 1642 73 0 0
CDI 0 0 0 0 270 1447 0 0
VCDI 0 0 0 0 0 12 24 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 62 1127 29 53 7 0 0 0
OW 0 148 67 90 58 1 0 0
VODI 0 21 38 305 119 17 0 0
ODI 0 0 2 134 1132 94 0 0
CDI 0 0 0 0 705 1420 24 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 0 385 3 2 0 0 0 0
OW 0 501 213 144 0 0 0 0
VODI 0 26 29 967 93 0 0 0
ODI 0 1 0 207 1805 70 0 0
CDI 0 2 1 66 1009 1700 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 0 279 0 0 0 0 0 0
OW 0 275 42 92 8 0 0 0
VODI 0 271 143 605 139 0 0 0
ODI 0 83 41 314 964 180 0 0
CDI 0 7 20 369 1708 1381 0 0
VCDI 0 0 0 6 88 209 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 487 2451 12 0 0 0 0 0
OW 4 822 188 85 0 0 0 0
VODI 0 17 5 409 68 0 0 0
ODI 0 0 0 5 739 0 0 0
CDI 0 0 0 7 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 466 1995 5 0 0 0 0 0
OW 25 1032 136 119 0 0 0 0
VODI 0 250 63 374 263 0 0 0
ODI 0 13 1 3 543 0 0 0
CDI 0 0 0 10 1 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 120 2158 23 16 0 0 0 0
OW 0 1319 430 213 1 0 0 0
VODI 0 8 33 1092 233 0 0 0
ODI 0 0 0 57 563 0 0 0
CDI 0 0 0 10 41 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 120 1840 30 15 0 0 0 0
OW 0 942 150 155 13 0 0 0
VODI 0 567 220 592 112 0 0 0
ODI 0 136 86 573 498 0 0 0
CDI 0 0 0 46 215 0 0 0
VCDI 0 0 0 7 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 10599 698 1 0 0 0 0 0
OW 6 18 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 10601 696 1 0 0 0 0 0
OW 4 20 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 7147 2072 7 0 0 0 0 0
OW 0 538 182 66 0 0 0 0
VODI 0 9 20 576 27 0 0 0
ODI 0 0 0 99 587 21 0 0
CDI 0 0 0 0 42 231 40 0
VCDI 0 0 0 0 0 0 32 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7136 1706 0 0 0 0 0 0
OW 11 797 93 31 0 0 0 0
VODI 0 114 116 408 22 0 0 0
ODI 0 2 0 302 578 136 0 0
CDI 0 0 0 0 56 116 72 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 9353 2480 18 23 0 0 0 0
OW 1 532 95 134 0 0 0 0
VODI 0 12 0 256 82 0 0 0
ODI 0 0 0 0 1 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 9349 2292 17 26 0 0 0 0
OW 5 622 62 264 9 0 0 0
VODI 0 110 34 123 73 0 0 0
ODI 0 0 0 0 1 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 178 2449 1 2 0 0 0 0
OW 0 680 259 109 0 0 0 0
VODI 0 1 17 1075 148 0 0 0
ODI 0 0 0 39 760 0 0 0
CDI 0 0 0 1 80 2 0 0
VCDI 0 0 0 0 0 2 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 178 2217 8 2 0 0 0 0
OW 0 571 63 51 0 0 0 0
VODI 0 328 194 688 151 0 0 0
ODI 0 14 12 484 744 0 0 0
CDI 0 0 0 1 91 0 0 0
VCDI 0 0 0 0 2 4 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 3961 2267 29 28 2 0 0 0
OW 0 404 176 194 13 0 0 0
VODI 0 4 5 608 194 0 0 0
ODI 0 0 0 19 563 18 0 0
CDI 0 0 0 0 32 21 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 3940 1982 37 48 23 0 0 0
OW 21 617 125 184 34 2 0 0
VODI 0 74 46 551 453 18 0 0
ODI 0 2 2 66 266 19 0 0
CDI 0 0 0 0 28 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 14484 949 13 2 0 0 0 0
OW 2 63 21 58 0 0 0 0
VODI 0 2 4 54 31 0 0 0
ODI 0 0 0 2 37 6 0 0
CDI 0 0 0 0 0 18 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 14479 918 10 2 0 0 0 0
OW 7 90 24 81 14 0 0 0
VODI 0 6 4 32 51 6 0 0
ODI 0 0 0 1 3 16 0 0
CDI 0 0 0 0 0 2 0 0
VCDI 0 0 0 0 0 0 0 0


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