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: 2023-10-19

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: 2023-10-23

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 0 136 17 10 0 0 0 0
OW 0 205 71 87 0 0 0 0
VODI 0 106 33 270 95 0 0 0
ODI 0 3 0 118 364 14 0 0
CDI 0 0 0 11 344 592 0 0
VCDI 0 0 0 5 91 3449 13556 17325
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 76 17 29 0 0 0 0
OW 0 103 12 64 25 0 0 0
VODI 0 95 45 80 88 5 0 0
ODI 0 60 26 138 104 18 0 0
CDI 0 115 21 162 438 245 3 0
VCDI 0 1 0 28 239 3787 13553 17325

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 587 618 28 36 2 0 0 0
OW 0 37 20 82 2 0 0 0
VODI 0 0 0 150 91 0 0 0
ODI 0 0 0 40 198 1 0 0
CDI 0 0 0 0 42 26 0 0
VCDI 0 0 0 0 2 470 687 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 587 576 27 60 3 0 0 0
OW 0 79 19 81 11 0 0 0
VODI 0 0 2 137 104 0 0 0
ODI 0 0 0 28 119 1 0 0
CDI 0 0 0 2 68 16 0 0
VCDI 0 0 0 0 32 480 687 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 950 2363 75 66 0 0 0 0
OW 0 70 79 189 23 1 0 0
VODI 0 0 3 218 195 39 0 0
ODI 0 0 0 2 281 154 0 0
CDI 0 0 0 0 93 653 11 0
VCDI 0 0 0 0 0 713 2813 987
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 950 2344 65 68 15 0 0 0
OW 0 89 86 275 115 26 0 0
VODI 0 0 6 121 236 114 0 0
ODI 0 0 0 11 180 164 0 0
CDI 0 0 0 0 46 461 130 0
VCDI 0 0 0 0 0 795 2694 987

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1979 2046 79 21 0 0 0 0
OW 0 109 73 139 0 0 0 0
VODI 0 0 2 229 82 0 0 0
ODI 0 0 0 9 207 0 0 0
CDI 0 0 0 0 182 82 0 0
VCDI 0 0 0 0 0 352 62 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1968 2036 77 50 0 0 0 0
OW 11 109 52 147 11 0 0 0
VODI 0 10 25 163 99 0 0 0
ODI 0 0 0 34 92 0 0 0
CDI 0 0 0 4 169 9 0 0
VCDI 0 0 0 0 100 425 62 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 1078 37 34 9 0 0 0
OW 0 343 185 196 89 0 0 0
VODI 0 10 33 574 425 34 0 0
ODI 0 2 0 50 1156 601 0 0
CDI 0 0 0 3 257 988 0 0
VCDI 0 0 0 1 8 759 352 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1160 82 181 231 16 0 0
OW 0 183 97 223 222 212 0 0
VODI 0 79 71 304 650 402 0 0
ODI 0 10 5 134 545 301 0 0
CDI 0 1 0 14 242 383 0 0
VCDI 0 0 0 2 54 1068 352 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 0 51 4 15 0 0 0 0
OW 0 25 30 254 42 0 0 0
VODI 0 0 2 247 211 1 0 0
ODI 0 0 0 23 646 381 0 0
CDI 0 0 0 5 284 839 3 0
VCDI 0 0 0 0 27 708 1498 3
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 36 16 209 68 14 0 0
OW 0 36 8 198 234 170 0 0
VODI 0 4 12 108 392 425 0 0
ODI 0 0 0 12 226 333 0 0
CDI 0 0 0 15 162 303 7 0
VCDI 0 0 0 2 128 684 1494 3

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2485 2080 116 382 108 0 0 0
OW 0 35 20 111 87 0 0 0
VODI 0 1 1 70 96 0 0 0
ODI 0 0 0 0 379 2 0 0
CDI 0 0 0 0 71 145 0 0
VCDI 0 0 0 0 10 118 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2485 2078 114 449 178 0 0 0
OW 0 37 15 82 111 0 0 0
VODI 0 1 8 20 264 2 0 0
ODI 0 0 0 12 117 54 0 0
CDI 0 0 0 0 60 101 0 0
VCDI 0 0 0 0 21 108 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 9896 1108 9 0 0 0 0 0
OW 0 205 39 28 5 0 0 0
VODI 0 15 2 9 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9896 1053 7 0 0 0 0 0
OW 0 127 10 23 0 0 0 0
VODI 0 108 13 14 10 0 0 0
ODI 0 30 19 0 1 0 0 0
CDI 0 10 1 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 6395 2228 41 18 0 0 0 0
OW 0 211 77 123 4 0 0 0
VODI 0 6 19 140 85 0 0 0
ODI 0 1 6 56 172 70 0 0
CDI 0 0 0 1 95 588 18 0
VCDI 0 0 0 0 5 578 759 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6395 2216 54 35 0 0 0 0
OW 0 124 40 98 2 0 0 0
VODI 0 69 19 98 47 0 0 0
ODI 0 24 11 44 88 16 0 0
CDI 0 13 19 56 180 319 7 0
VCDI 0 0 0 7 44 901 770 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 11912 972 17 29 2 0 0 0
OW 0 2 5 32 16 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 11912 961 17 36 3 0 0 0
OW 0 13 5 24 15 0 0 0
VODI 0 0 0 1 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 4151 1031 24 36 0 0 0 0
OW 0 74 52 47 0 0 0 0
VODI 0 1 9 85 11 0 0 0
ODI 0 0 0 43 12 0 0 0
CDI 0 0 0 35 16 6 0 0
VCDI 0 0 0 7 49 100 14 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4116 1012 19 34 0 0 0 0
OW 35 73 30 40 0 0 0 0
VODI 0 16 20 67 21 0 0 0
ODI 0 5 9 40 2 0 0 0
CDI 0 0 7 41 6 11 0 0
VCDI 0 0 0 31 59 95 14 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 8536 2 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 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 8536 2 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 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 15742 0 4 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 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 15742 0 4 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 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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