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: 2024-07-25

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: 2024-07-29

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 40 764 5 9 0 0 0 0
OW 0 486 177 85 4 0 0 0
VODI 0 0 27 832 87 0 0 0
ODI 0 0 0 82 7095 417 0 0
CDI 0 0 0 0 1169 22802 233 1
VCDI 0 0 0 0 0 263 2208 116
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 40 672 3 18 2 0 0 0
OW 0 400 50 71 5 0 0 0
VODI 0 172 131 445 170 1 0 0
ODI 0 6 25 454 4568 3700 10 4
CDI 0 0 0 20 3610 19663 2075 113
VCDI 0 0 0 0 0 118 356 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 200 127 1 30 0 0 0 0
OW 0 135 45 14 0 0 0 0
VODI 2 68 8 105 1 0 0 0
ODI 0 80 3 39 8 0 0 0
CDI 0 49 13 94 159 370 12 0
VCDI 0 0 0 132 526 650 248 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 200 106 1 29 0 0 0 0
OW 0 52 4 2 0 0 0 0
VODI 0 52 37 64 1 0 0 0
ODI 2 78 8 41 1 0 0 0
CDI 0 115 9 112 103 123 2 0
VCDI 0 56 11 166 589 897 258 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 617 1637 0 0 0 0 0 0
OW 0 554 291 166 0 0 0 0
VODI 0 1 20 1246 154 0 0 0
ODI 0 0 0 78 2349 51 0 0
CDI 0 0 0 0 278 2223 7 0
VCDI 0 0 0 0 1 40 265 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 617 1400 2 0 0 0 0 0
OW 0 653 125 79 0 0 0 0
VODI 0 139 184 1190 261 2 0 0
ODI 0 0 0 216 1639 162 0 0
CDI 0 0 0 5 878 2126 272 0
VCDI 0 0 0 0 4 24 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 277 1417 1 0 0 0 0 0
OW 0 455 250 111 0 0 0 0
VODI 0 0 7 1223 85 2 0 0
ODI 0 0 0 21 1550 31 0 0
CDI 0 0 0 0 51 172 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 277 1173 0 0 0 0 0 0
OW 0 503 103 137 0 0 0 0
VODI 0 196 155 759 131 16 0 0
ODI 0 0 0 457 998 123 0 0
CDI 0 0 0 2 557 66 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 457 1390 0 0 0 0 0 0
OW 58 442 202 81 0 0 0 0
VODI 0 3 6 1778 174 0 0 0
ODI 0 0 0 41 2592 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 336 1173 5 2 0 0 0 0
OW 179 517 130 247 0 0 0 0
VODI 0 145 65 1028 786 0 0 0
ODI 0 0 8 623 1975 0 0 0
CDI 0 0 0 0 5 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 2252 1359 0 0 0 0 0 0
OW 10 363 111 32 0 0 0 0
VODI 0 1 12 466 94 0 0 0
ODI 0 0 0 17 557 25 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 2240 1223 0 0 0 0 0 0
OW 22 401 42 37 0 0 0 0
VODI 0 99 81 463 506 0 0 0
ODI 0 0 0 15 145 25 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 3577 1786 6 0 0 0 0 0
OW 246 343 125 76 0 0 0 0
VODI 3 0 0 151 0 0 0 0
ODI 0 0 0 4 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 3256 1473 1 2 0 0 0 0
OW 517 643 91 98 0 0 0 0
VODI 52 13 39 127 0 0 0 0
ODI 1 0 0 4 0 0 0 0
CDI 0 0 0 0 0 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 10813 502 2 5 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10813 495 2 5 0 0 0 0
OW 0 7 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 8458 1551 4 0 0 0 0 0
OW 14 374 107 51 1 0 0 0
VODI 0 0 4 870 58 0 0 0
ODI 0 0 0 5 110 10 0 0
CDI 0 0 0 0 11 68 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 8452 1371 3 0 0 0 0 0
OW 16 473 22 19 2 0 0 0
VODI 4 81 90 784 73 4 0 0
ODI 0 0 0 123 82 41 0 0
CDI 0 0 0 0 23 33 0 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 11742 1118 7 0 0 0 0 0
OW 0 72 19 26 0 0 0 0
VODI 0 0 0 3 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 11739 1082 2 0 0 0 0 0
OW 3 108 24 19 0 0 0 0
VODI 0 0 0 10 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1290 3235 37 8 0 0 0 0
OW 0 396 200 178 0 0 0 0
VODI 0 3 2 367 17 0 0 0
ODI 0 0 0 18 37 0 0 0
CDI 0 0 0 5 10 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 1290 2921 14 0 0 0 0 0
OW 0 705 192 278 6 0 0 0
VODI 0 8 33 267 8 0 0 0
ODI 0 0 0 17 32 0 0 0
CDI 0 0 0 14 18 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 4915 2315 52 67 0 0 0 0
OW 57 308 95 240 6 0 0 0
VODI 0 3 1 319 77 0 0 0
ODI 0 0 0 12 71 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 4892 2125 61 93 0 0 0 0
OW 80 469 78 320 22 0 0 0
VODI 0 32 9 225 132 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

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14615 947 6 4 0 0 0 0
OW 0 56 31 40 0 0 0 0
VODI 0 0 0 47 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 14615 897 6 7 0 0 0 0
OW 0 104 29 48 0 0 0 0
VODI 0 2 2 36 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


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