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: 2024-08-01

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: 2024-08-05

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 44 1015 5 2 0 0 0 0
OW 0 483 196 97 0 0 0 0
VODI 0 0 24 1187 181 0 0 0
ODI 0 0 0 117 11648 801 0 0
CDI 0 0 0 0 1238 18626 91 0
VCDI 0 0 0 0 0 833 314 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 44 917 1 2 0 0 0 0
OW 0 464 117 134 3 0 0 0
VODI 0 117 102 797 283 2 0 0
ODI 0 0 5 467 7267 1595 0 0
CDI 0 0 0 3 5514 16900 320 0
VCDI 0 0 0 0 0 1763 85 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 292 108 0 0 0 0 0 0
OW 4 242 26 15 0 0 0 0
VODI 2 128 23 116 0 0 0 0
ODI 0 59 16 69 3 0 0 0
CDI 0 87 53 258 309 336 0 0
VCDI 0 0 0 29 206 728 10 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 291 67 0 0 0 0 0 0
OW 2 127 17 17 0 0 0 0
VODI 4 116 8 70 0 0 0 0
ODI 1 89 4 57 2 0 0 0
CDI 0 140 39 141 110 36 0 0
VCDI 0 85 50 202 406 1028 10 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 1648 1474 0 0 0 0 0 0
OW 206 895 176 98 0 0 0 0
VODI 0 0 9 1491 72 0 0 0
ODI 0 0 0 41 2285 33 0 0
CDI 0 0 0 0 183 1357 0 0
VCDI 0 0 0 0 0 10 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1421 1259 1 0 0 0 0 0
OW 433 671 48 79 0 0 0 0
VODI 0 438 129 939 59 0 0 0
ODI 0 1 7 585 917 0 0 0
CDI 0 0 0 27 1564 1291 0 0
VCDI 0 0 0 0 0 109 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 653 1479 2 0 0 0 0 0
OW 0 811 175 135 4 0 0 0
VODI 0 0 6 649 123 0 0 0
ODI 0 0 0 21 1321 40 0 0
CDI 0 0 0 0 17 217 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 592 1110 3 0 0 0 0 0
OW 61 1058 71 201 10 0 0 0
VODI 0 122 109 520 342 4 0 0
ODI 0 0 0 84 1103 226 0 0
CDI 0 0 0 0 10 27 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 712 1370 0 0 0 0 0 0
OW 0 720 304 125 0 0 0 0
VODI 0 0 7 1970 185 0 0 0
ODI 0 0 0 54 1777 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 712 1182 0 2 0 0 0 0
OW 0 660 93 73 0 0 0 0
VODI 0 248 218 1770 404 0 0 0
ODI 0 0 0 304 1558 0 0 0
CDI 0 0 0 0 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 2181 1404 0 0 0 0 0 0
OW 1 324 107 25 0 0 0 0
VODI 0 0 10 640 100 0 0 0
ODI 0 0 0 50 380 23 0 0
CDI 0 0 0 0 18 36 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 2175 1184 0 0 0 0 0 0
OW 7 486 52 49 0 0 0 0
VODI 0 58 65 647 342 2 0 0
ODI 0 0 0 19 156 57 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 5107 1060 5 12 0 0 0 0
OW 96 33 4 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 5044 947 1 2 0 0 0 0
OW 133 146 8 10 0 0 0 0
VODI 26 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

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11258 56 0 0 0 0 0 0
OW 8 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 11231 56 0 0 0 0 0 0
OW 34 0 0 0 0 0 0 0
VODI 1 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 8724 1670 2 0 0 0 0 0
OW 6 245 130 71 4 0 0 0
VODI 0 0 12 611 42 6 0 0
ODI 0 0 0 1 63 11 0 0
CDI 0 0 0 0 4 60 11 0
VCDI 0 0 0 0 0 10 13 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8717 1574 3 0 0 0 0 0
OW 13 320 73 86 19 17 0 0
VODI 0 21 68 573 41 8 10 0
ODI 0 0 0 24 41 34 9 0
CDI 0 0 0 0 12 28 5 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 12138 834 2 0 0 0 0 0
OW 1 12 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 12093 805 1 0 0 0 0 0
OW 46 41 1 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 4432 827 0 0 0 0 0 0
OW 387 43 5 9 0 0 0 0
VODI 0 0 0 76 0 0 0 0
ODI 0 0 0 19 3 0 0 0
CDI 0 0 0 1 1 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 4219 833 0 0 0 0 0 0
OW 600 37 5 9 0 0 0 0
VODI 0 0 0 66 0 0 0 0
ODI 0 0 0 26 0 0 0 0
CDI 0 0 0 4 4 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 6641 1260 4 0 0 0 0 0
OW 167 365 22 47 0 0 0 0
VODI 1 0 0 31 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 6510 1084 2 0 0 0 0 0
OW 288 411 20 34 0 0 0 0
VODI 11 130 4 44 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 14974 723 8 0 0 0 0 0
OW 0 37 2 2 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 14974 674 7 0 0 0 0 0
OW 0 86 3 2 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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