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: 2022-09-01

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-09-05

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 678 3597 18 11 0 0 0 0
OW 0 601 79 265 3 0 0 0
VODI 0 102 38 1661 239 0 0 0
ODI 0 0 0 324 6147 516 0 0
CDI 0 0 0 17 2431 7839 347 7
VCDI 0 0 0 0 118 5422 5278 1164
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 678 3079 7 5 0 0 0 0
OW 0 574 42 132 6 0 0 0
VODI 0 573 62 848 143 0 0 0
ODI 0 74 24 1068 4353 736 0 0
CDI 0 0 0 225 3945 5941 274 28
VCDI 0 0 0 0 491 7100 5351 1143

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 710 1221 13 24 0 0 0 0
OW 0 14 0 1 0 0 0 0
VODI 0 1 0 8 21 0 0 0
ODI 0 0 0 8 37 15 3 0
CDI 0 2 1 9 39 89 147 0
VCDI 0 0 0 1 21 54 694 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 702 1167 13 24 0 0 0 0
OW 8 66 0 1 0 0 0 0
VODI 0 3 0 8 26 2 0 0
ODI 0 0 0 3 28 24 3 0
CDI 0 2 1 14 40 66 183 0
VCDI 0 0 0 1 24 66 658 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 872 4240 35 97 0 0 0 0
OW 0 306 46 239 0 0 0 0
VODI 0 41 19 1014 92 1 0 0
ODI 0 0 0 307 929 50 0 0
CDI 0 0 0 3 519 693 62 0
VCDI 0 0 0 0 0 63 354 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 872 3430 26 116 1 1 0 0
OW 0 596 21 185 18 12 0 0
VODI 0 537 37 542 125 37 0 0
ODI 0 24 16 699 478 65 0 0
CDI 0 0 0 118 851 233 19 0
VCDI 0 0 0 0 67 459 397 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 5184 441 0 0 0 0 0 0
OW 0 27 0 0 0 0 0 0
VODI 0 0 0 2 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 5169 395 0 0 0 0 0 0
OW 15 59 0 0 0 0 0 0
VODI 0 14 0 2 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

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2020 3203 3 1 0 0 0 0
OW 0 307 67 170 0 0 0 0
VODI 0 7 3 742 87 0 0 0
ODI 0 0 0 28 444 12 0 0
CDI 0 0 0 0 20 132 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 2020 2896 3 8 0 0 0 0
OW 0 463 31 67 0 0 0 0
VODI 0 158 39 702 89 0 0 0
ODI 0 0 0 164 354 0 0 0
CDI 0 0 0 0 108 144 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 1969 2215 8 7 0 0 0 0
OW 0 66 19 69 0 0 0 0
VODI 0 0 4 131 39 0 0 0
ODI 0 0 0 18 555 61 0 0
CDI 0 0 0 0 58 107 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 1969 2098 3 1 0 0 0 0
OW 0 111 11 40 4 0 0 0
VODI 0 63 12 135 80 0 0 0
ODI 0 9 5 49 526 123 0 0
CDI 0 0 0 0 42 45 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 5084 1226 2 12 0 0 0 0
OW 0 6 0 0 0 0 0 0
VODI 0 1 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 5084 1198 2 12 0 0 0 0
OW 0 33 0 0 0 0 0 0
VODI 0 2 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 11313 18 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 11313 18 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8475 1818 22 90 20 0 0 0
OW 0 28 11 75 23 0 0 0
VODI 0 11 5 118 79 0 0 0
ODI 0 0 0 87 589 32 0 0
CDI 0 0 0 12 98 90 13 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 8475 1742 21 109 46 0 0 0
OW 0 64 5 76 30 0 0 0
VODI 0 50 8 54 111 0 0 0
ODI 0 1 4 63 230 20 0 0
CDI 0 0 0 80 392 102 13 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 12988 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 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 12988 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 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 4934 728 13 54 33 2 0 0
OW 0 8 5 20 1 0 0 0
VODI 0 0 0 4 1 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 4934 728 14 54 33 2 0 0
OW 0 8 4 19 2 0 0 0
VODI 0 0 0 5 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

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7832 752 2 1 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 7832 752 2 1 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 19945 256 4 4 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 19945 256 4 4 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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