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: 2023-07-20

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-07-24

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 64 36 19 0 0 0 0
OW 0 2 27 130 1 0 0 0
VODI 0 0 0 694 183 8 0 0
ODI 0 0 0 109 6763 415 4 0
CDI 0 0 0 33 1046 24574 681 0
VCDI 0 0 0 0 0 1220 893 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 65 34 58 4 0 0 0
OW 0 0 23 160 88 3 0 0
VODI 0 1 6 566 1211 69 1 0
ODI 0 0 0 113 4709 1821 26 0
CDI 0 0 0 88 1981 20982 989 0
VCDI 0 0 0 0 0 3342 562 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 288 180 19 38 7 1 0 0
OW 0 17 17 75 34 1 0 0
VODI 0 8 4 86 184 2 0 0
ODI 0 3 0 0 706 51 0 0
CDI 0 0 0 0 392 968 8 0
VCDI 0 0 0 0 18 26 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 288 180 21 87 77 1 0 0
OW 0 11 12 64 124 1 0 0
VODI 0 14 7 47 330 22 0 0
ODI 0 3 0 1 324 97 0 0
CDI 0 0 0 0 391 837 8 0
VCDI 0 0 0 0 95 91 0 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 118 1924 144 118 0 0 0 0
OW 0 25 94 306 0 0 0 0
VODI 0 1 1 1187 363 0 0 0
ODI 0 0 0 141 4088 102 0 0
CDI 0 0 0 0 197 1173 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 118 1825 124 161 0 0 0 0
OW 0 90 52 381 4 0 0 0
VODI 0 35 63 823 1020 26 0 0
ODI 0 0 0 351 2643 245 0 0
CDI 0 0 0 36 981 1004 0 0
VCDI 0 0 0 0 0 0 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 490 1588 122 161 0 0 0 0
OW 0 0 14 318 0 0 0 0
VODI 0 0 0 1629 499 0 0 0
ODI 0 0 0 67 762 0 0 0
CDI 0 0 0 0 4 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 490 1575 115 280 0 0 0 0
OW 0 13 19 576 32 0 0 0
VODI 0 0 2 869 532 0 0 0
ODI 0 0 0 425 686 0 0 0
CDI 0 0 0 25 15 0 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 1969 277 119 0 0 0 0
OW 0 12 84 473 21 0 0 0
VODI 0 0 0 736 264 0 0 0
ODI 0 0 0 41 3135 53 0 0
CDI 0 0 0 1 7 54 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 1925 302 421 40 0 0 0
OW 0 51 59 729 240 0 0 0
VODI 0 5 0 204 1352 18 0 0
ODI 0 0 0 15 1795 89 0 0
CDI 0 0 0 1 0 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 185 2054 141 105 0 0 0 0
OW 3 30 39 177 11 0 0 0
VODI 0 10 2 241 93 0 0 0
ODI 0 0 0 26 872 20 0 0
CDI 0 0 0 0 82 1149 84 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 185 2028 113 114 0 0 0 0
OW 3 48 62 216 38 0 0 0
VODI 0 18 6 191 260 0 0 0
ODI 0 0 1 25 650 159 0 0
CDI 0 0 0 3 110 926 82 0
VCDI 0 0 0 0 0 86 2 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 2190 1825 145 221 11 0 0 0
OW 0 8 27 236 22 0 0 0
VODI 0 0 1 304 167 5 0 0
ODI 0 0 0 26 604 48 1 0
CDI 0 0 0 1 68 359 37 0
VCDI 0 0 0 0 0 3 22 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2190 1802 124 362 43 0 0 0
OW 0 22 35 217 101 8 0 0
VODI 0 9 11 170 425 51 1 0
ODI 0 0 3 29 265 250 12 0
CDI 0 0 0 10 37 106 47 0
VCDI 0 0 0 0 1 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 8308 2755 68 59 3 0 0 0
OW 0 1 4 37 5 0 0 0
VODI 0 0 0 56 9 0 0 0
ODI 0 0 0 7 19 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 8308 2752 66 61 2 0 0 0
OW 0 4 3 36 4 0 0 0
VODI 0 0 3 37 10 0 0 0
ODI 0 0 0 25 20 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 6563 2665 165 117 2 0 0 0
OW 0 18 41 183 12 0 0 0
VODI 0 0 0 714 182 1 0 0
ODI 0 0 0 77 591 40 0 0
CDI 0 0 0 0 94 149 76 0
VCDI 0 0 0 0 0 0 6 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6563 2668 178 256 20 0 0 0
OW 0 12 24 268 66 0 0 0
VODI 0 3 4 495 248 0 0 0
ODI 0 0 0 63 323 35 17 0
CDI 0 0 0 9 224 155 65 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 11394 1484 66 44 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 11394 1484 66 44 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 68 3708 453 808 59 13 0 0
OW 0 3 19 401 38 0 0 0
VODI 0 0 0 128 73 0 0 0
ODI 0 0 0 2 25 0 0 0
CDI 0 0 0 0 5 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 68 3699 449 1032 86 13 0 0
OW 0 12 23 264 49 0 0 0
VODI 0 0 0 43 41 0 0 0
ODI 0 0 0 0 15 0 0 0
CDI 0 0 0 0 9 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 7415 598 33 23 22 0 0 0
OW 0 2 13 66 35 0 0 0
VODI 0 0 0 79 97 0 0 0
ODI 0 0 0 11 171 15 0 0
CDI 0 0 0 0 4 3 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 7415 597 29 49 43 0 0 0
OW 0 3 16 51 61 0 0 0
VODI 0 0 1 55 169 0 0 0
ODI 0 0 0 24 56 18 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 19516 674 14 0 0 0 0 0
OW 0 3 1 1 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 19516 673 12 0 0 0 0 0
OW 0 4 3 1 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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