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: 2024-06-06

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: 2024-06-10

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 30 4 4 0 0 0 0
OW 0 55 20 18 2 0 0 0
VODI 0 6 7 109 22 1 0 0
ODI 0 0 2 77 219 22 0 2
CDI 0 0 0 23 403 1256 47 6
VCDI 0 0 0 0 0 1329 17073 16165
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 20 1 5 0 0 0 0
OW 0 29 7 16 1 0 0 0
VODI 0 28 12 52 11 0 0 0
ODI 0 13 5 65 70 16 0 1
CDI 0 1 8 92 536 925 99 5
VCDI 0 0 0 1 28 1667 17021 16167

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 0 126 0 0 0 0 0 0
OW 0 101 4 4 0 0 0 0
VODI 0 40 7 18 10 1 0 0
ODI 0 11 7 33 32 27 4 0
CDI 0 5 1 1 10 122 16 0
VCDI 0 1 0 2 53 161 1548 774
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 81 0 0 0 0 0 0
OW 0 101 0 1 0 0 0 0
VODI 0 52 3 11 2 4 2 0
ODI 0 21 7 22 27 32 3 0
CDI 0 29 9 24 27 114 170 0
VCDI 0 0 0 0 49 161 1393 774

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 375 22 47 0 0 0 0
OW 0 340 124 82 6 0 0 0
VODI 0 36 33 421 35 0 0 0
ODI 0 3 0 112 393 15 0 0
CDI 0 0 0 0 855 2624 109 0
VCDI 0 0 0 0 0 1207 3102 37
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 299 15 40 2 0 0 0
OW 0 251 69 59 9 0 0 0
VODI 0 154 61 203 23 9 0 0
ODI 0 50 33 241 41 33 0 0
CDI 0 0 1 119 1021 1408 205 0
VCDI 0 0 0 0 193 2396 3006 37

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 81 1 0 0 0 0 0
OW 0 162 26 13 1 0 0 0
VODI 0 12 23 61 27 3 0 0
ODI 0 0 8 51 41 9 4 0
CDI 0 0 0 33 148 243 29 0
VCDI 0 0 0 0 10 293 3011 1363
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 52 0 0 0 0 0 0
OW 0 49 1 5 0 0 0 0
VODI 0 69 5 20 19 2 0 0
ODI 0 53 14 20 39 9 0 0
CDI 0 32 36 74 81 138 482 0
VCDI 0 0 2 39 88 399 2562 1363

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 2 0 0 0 0
ODI 0 0 0 9 2 0 5 0
CDI 0 0 0 15 116 36 38 0
VCDI 0 0 0 0 67 1077 4359 1498
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 7 0
CDI 0 0 0 20 52 13 46 0
VCDI 0 0 0 6 132 1100 4349 1498

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 3 2 27 30 2 0 0
OW 0 97 57 93 17 10 0 0
VODI 0 112 50 276 82 24 0 0
ODI 0 16 26 137 535 83 0 0
CDI 0 0 0 62 533 615 46 0
VCDI 0 0 0 0 2 264 1802 296
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 37 44 13 0 0
OW 0 7 12 57 34 19 0 0
VODI 0 29 22 69 63 38 0 0
ODI 0 35 14 81 126 80 0 0
CDI 0 153 71 230 818 324 35 0
VCDI 0 4 16 121 114 524 1813 296

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 33 10 19 0 0 0 0
OW 0 172 89 61 1 0 0 0
VODI 0 3 27 309 109 3 0 0
ODI 0 1 2 82 595 36 7 0
CDI 0 0 1 88 607 1799 87 0
VCDI 0 0 0 6 73 311 1551 235
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 24 9 15 0 0 0 0
OW 0 85 35 86 1 0 0 0
VODI 0 97 72 217 129 5 8 0
ODI 0 2 12 98 291 93 13 0
CDI 0 1 1 130 729 1505 148 0
VCDI 0 0 0 19 235 546 1476 235

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4786 2930 18 25 0 0 0 0
OW 0 1138 306 152 6 0 0 0
VODI 0 67 79 938 174 6 0 0
ODI 0 0 0 20 460 26 0 0
CDI 0 0 0 0 39 151 0 0
VCDI 0 0 0 0 0 1 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4786 2812 19 26 2 0 0 0
OW 0 532 102 126 18 4 0 0
VODI 0 483 106 385 71 7 0 0
ODI 0 299 165 560 455 38 0 0
CDI 0 9 11 38 133 131 0 0
VCDI 0 0 0 0 0 4 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 6502 2637 17 6 0 0 0 0
OW 0 328 116 56 0 0 0 0
VODI 0 3 19 303 23 0 0 0
ODI 0 0 0 70 153 4 0 0
CDI 0 0 0 11 280 395 13 0
VCDI 0 0 0 0 0 296 464 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6502 2498 16 17 0 0 0 0
OW 0 286 60 44 1 0 0 0
VODI 0 172 53 155 26 0 0 0
ODI 0 12 18 145 104 6 0 0
CDI 0 0 5 85 314 307 42 0
VCDI 0 0 0 0 11 382 435 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 7835 2835 18 27 0 0 0 0
OW 0 228 164 131 14 0 0 0
VODI 0 0 10 626 106 0 0 0
ODI 0 0 0 74 551 32 0 0
CDI 0 0 0 0 54 184 49 0
VCDI 0 0 0 0 0 2 47 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7835 2654 23 25 0 0 0 0
OW 0 394 84 171 22 0 0 0
VODI 0 15 83 482 220 10 0 0
ODI 0 0 2 165 367 121 7 0
CDI 0 0 0 15 116 87 89 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 0 452 0 0 0 0 0 0
OW 0 410 106 41 0 0 0 0
VODI 0 20 49 331 23 0 0 0
ODI 0 0 0 122 350 18 8 0
CDI 0 0 0 32 269 1265 154 0
VCDI 0 0 0 0 39 215 1824 75
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 375 1 0 0 0 0 0
OW 0 333 36 18 0 0 0 0
VODI 0 155 82 162 14 0 9 0
ODI 0 19 30 198 99 4 13 0
CDI 0 0 6 148 470 1180 654 0
VCDI 0 0 0 0 98 314 1310 75

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1152 1640 14 9 0 0 0 0
OW 0 680 38 57 1 0 0 0
VODI 0 91 15 145 52 0 0 0
ODI 0 96 19 95 217 15 10 0
CDI 0 46 39 301 352 221 59 0
VCDI 0 0 0 14 219 1168 1773 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1152 1398 13 9 0 0 0 0
OW 0 630 17 55 12 0 0 0
VODI 0 191 15 72 60 48 4 0
ODI 0 117 11 71 109 66 27 0
CDI 0 181 28 165 174 85 121 0
VCDI 0 36 41 249 486 1205 1690 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 11314 2744 26 34 0 0 0 0
OW 46 133 93 135 2 0 0 0
VODI 0 10 1 432 86 0 0 0
ODI 0 1 1 28 191 5 0 0
CDI 0 1 1 7 100 139 36 0
VCDI 0 0 0 0 0 10 170 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11256 2659 49 59 4 0 0 0
OW 104 208 57 261 23 0 0 0
VODI 0 20 14 253 135 10 0 0
ODI 0 1 1 39 98 15 1 0
CDI 0 1 1 24 114 89 107 0
VCDI 0 0 0 0 5 40 98 0


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