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: 2020-07-02

Model: ARC MFC - TOPAZ

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2020-07-06

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 0 321 15 43 5 0 0 0
OW 0 70 26 192 30 0 0 0
VODI 0 6 4 221 273 0 0 0
ODI 0 0 0 31 1772 612 0 0
CDI 0 0 0 8 1737 13637 353 0
VCDI 0 0 0 0 2 15971 1573 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 241 7 32 11 0 0 0
OW 0 101 21 131 30 0 0 0
VODI 0 42 13 213 603 208 0 0
ODI 0 13 4 97 1196 2182 0 0
CDI 0 0 0 22 1311 10228 526 0
VCDI 0 0 0 0 668 17602 1400 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 0 98 9 128 24 0 0 0
OW 0 2 2 45 8 0 0 0
VODI 0 0 0 22 45 1 0 0
ODI 0 0 0 0 113 22 0 0
CDI 0 0 0 0 110 1093 45 0
VCDI 0 0 0 1 39 1190 136 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 98 9 124 26 0 0 0
OW 0 2 2 56 11 0 0 0
VODI 0 0 0 15 68 3 0 0
ODI 0 0 0 0 67 43 0 0
CDI 0 0 0 0 128 928 28 0
VCDI 0 0 0 1 39 1332 153 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 0 382 18 124 3 0 0 0
OW 0 61 10 111 22 0 0 0
VODI 0 15 4 307 147 0 0 0
ODI 0 0 1 48 886 104 0 0
CDI 0 0 0 0 298 4902 46 0
VCDI 0 0 0 0 0 2471 22 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 413 24 131 7 0 0 0
OW 0 42 5 140 40 0 0 0
VODI 0 3 3 205 179 0 0 0
ODI 0 0 0 89 649 88 0 0
CDI 0 0 1 25 481 4874 55 0
VCDI 0 0 0 0 0 2515 13 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 705 1831 48 171 0 0 0 0
OW 0 28 11 265 1 0 0 0
VODI 0 0 2 344 183 0 0 0
ODI 0 0 0 4 1357 42 0 0
CDI 0 0 0 0 165 497 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 705 1774 42 272 4 0 0 0
OW 0 59 14 215 38 0 0 0
VODI 0 26 5 292 476 0 0 0
ODI 0 0 0 5 818 30 0 0
CDI 0 0 0 0 370 509 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 0 1474 58 202 1 0 0 0
OW 0 267 47 383 19 0 0 0
VODI 0 16 12 760 457 0 0 0
ODI 0 0 0 14 2844 115 0 0
CDI 0 1 0 1 66 509 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 1127 44 267 16 0 0 0
OW 0 333 23 205 55 0 0 0
VODI 0 261 40 550 307 0 0 0
ODI 0 36 10 337 2120 214 0 0
CDI 0 0 0 1 889 410 0 0
VCDI 0 1 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 534 3174 40 117 4 0 0 0
OW 0 139 21 238 38 0 0 0
VODI 0 19 9 232 262 0 0 0
ODI 0 6 2 8 414 49 0 0
CDI 0 0 1 7 2 10 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 534 2891 28 172 31 0 0 0
OW 0 236 17 155 126 0 0 0
VODI 0 195 25 237 325 18 0 0
ODI 0 16 3 38 237 41 0 0
CDI 0 0 0 0 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 3402 1617 10 14 2 0 0 0
OW 1 41 27 193 10 0 0 0
VODI 0 0 0 120 162 6 0 0
ODI 0 0 0 0 333 69 0 0
CDI 0 0 0 0 32 292 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 3403 1514 7 29 16 0 0 0
OW 0 137 27 186 50 5 0 0
VODI 0 7 3 112 362 118 0 0
ODI 0 0 0 0 99 227 0 0
CDI 0 0 0 0 12 17 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 8804 2199 24 73 3 2 0 0
OW 0 21 10 55 6 3 0 0
VODI 0 3 2 25 39 8 0 0
ODI 0 0 0 0 38 13 0 0
CDI 0 0 0 0 1 2 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 8804 2166 25 91 3 2 0 0
OW 0 45 6 40 22 4 0 0
VODI 0 12 4 18 40 12 0 0
ODI 0 0 1 3 22 10 0 0
CDI 0 0 0 1 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 5969 2826 34 419 31 0 0 0
OW 0 22 5 143 71 3 0 0
VODI 0 3 1 91 305 20 0 0
ODI 0 0 0 69 984 136 0 0
CDI 0 0 0 0 36 528 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 5969 2800 36 512 137 0 0 0
OW 0 31 2 99 294 13 0 0
VODI 0 18 2 38 416 138 0 0
ODI 0 2 0 57 533 289 0 0
CDI 0 0 0 16 47 247 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 10778 1851 29 179 32 0 0 0
OW 0 0 0 30 33 0 0 0
VODI 0 0 0 11 45 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 10778 1846 27 181 52 0 0 0
OW 0 5 2 38 52 0 0 0
VODI 0 0 0 1 6 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 602 3769 18 61 16 0 0 0
OW 0 139 28 193 41 1 0 0
VODI 0 33 2 301 155 0 0 0
ODI 0 0 0 2 419 13 0 0
CDI 0 0 0 0 2 8 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 602 3850 31 132 60 1 0 0
OW 0 80 15 201 46 0 0 0
VODI 0 11 2 214 159 3 0 0
ODI 0 0 0 10 368 18 0 0
CDI 0 0 0 0 0 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 815 3343 87 753 218 17 0 0
OW 0 65 7 466 210 14 0 0
VODI 0 96 3 400 1133 28 0 0
ODI 0 80 0 78 549 43 0 0
CDI 0 5 0 1 23 143 4 0
VCDI 0 0 0 0 0 6 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 815 3338 83 990 534 33 0 0
OW 0 66 10 565 933 43 0 0
VODI 0 55 3 38 399 49 0 0
ODI 0 77 1 67 206 12 0 0
CDI 0 52 0 38 58 53 2 0
VCDI 0 1 0 0 3 61 2 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 17844 1702 22 130 1 0 0 0
OW 9 13 6 59 25 0 0 0
VODI 0 0 0 75 147 0 0 0
ODI 0 0 0 0 159 11 0 0
CDI 0 0 0 0 2 4 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 17821 1710 22 154 22 0 0 0
OW 32 5 6 66 43 0 0 0
VODI 0 0 0 44 190 0 0 0
ODI 0 0 0 0 79 15 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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