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: 2024-08-15

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: 2024-08-19

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 344 1927 36 20 0 0 0 0
OW 0 1024 406 117 0 0 0 0
VODI 0 0 29 2440 227 0 0 0
ODI 0 0 0 135 13576 618 0 0
CDI 0 0 0 0 754 11091 241 0
VCDI 0 0 0 0 0 216 3491 210
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 344 1586 9 0 0 0 0 0
OW 0 907 119 72 0 0 0 0
VODI 0 443 319 1823 284 0 0 0
ODI 0 15 24 804 11080 1533 0 0
CDI 0 0 0 13 3193 10323 2668 14
VCDI 0 0 0 0 0 69 1064 196

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 523 515 3 7 0 0 0 0
OW 59 371 14 27 0 0 0 0
VODI 19 86 6 151 3 0 0 0
ODI 9 21 1 43 24 5 0 0
CDI 5 16 1 23 256 111 0 0
VCDI 0 1 2 20 70 157 570 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 500 431 2 2 0 0 0 0
OW 39 260 10 42 0 0 0 0
VODI 32 164 4 96 1 0 0 0
ODI 19 84 5 52 13 3 0 0
CDI 25 70 4 53 194 111 191 0
VCDI 0 1 2 26 145 159 379 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 4006 1295 0 0 0 0 0 0
OW 9 1122 244 93 0 0 0 0
VODI 0 2 12 1460 21 0 0 0
ODI 0 0 0 37 667 17 0 0
CDI 0 0 0 0 50 761 2 0
VCDI 0 0 0 0 0 32 148 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3893 874 0 0 0 0 0 0
OW 122 1077 13 2 0 0 0 0
VODI 0 468 243 818 1 0 0 0
ODI 0 0 0 755 383 63 0 0
CDI 0 0 0 15 353 730 129 0
VCDI 0 0 0 0 1 17 21 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 1301 1837 7 3 0 0 0 0
OW 0 494 155 103 3 0 0 0
VODI 0 0 2 1293 76 0 0 0
ODI 0 0 0 8 113 11 0 0
CDI 0 0 0 0 12 139 0 0
VCDI 0 0 0 0 0 70 26 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1301 1475 3 9 2 0 0 0
OW 0 804 113 170 13 3 0 0
VODI 0 52 48 1156 148 44 0 0
ODI 0 0 0 72 41 118 0 0
CDI 0 0 0 0 0 55 26 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 1319 2001 0 0 0 0 0 0
OW 0 1088 404 153 0 0 0 0
VODI 0 2 15 2047 107 0 0 0
ODI 0 0 0 11 77 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 1319 1588 0 0 0 0 0 0
OW 0 1232 147 70 0 0 0 0
VODI 0 271 272 1983 173 0 0 0
ODI 0 0 0 158 11 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 2104 1423 0 0 0 0 0 0
OW 0 345 128 50 0 0 0 0
VODI 0 0 9 689 52 0 0 0
ODI 0 0 0 29 412 29 0 0
CDI 0 0 0 0 6 23 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 2104 1151 1 0 0 0 0 0
OW 0 472 54 81 0 0 0 0
VODI 0 145 82 578 132 0 0 0
ODI 0 0 0 108 327 52 0 0
CDI 0 0 0 1 11 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 6017 300 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 6017 300 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

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11322 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 11322 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9786 1518 31 3 0 0 0 0
OW 0 84 40 37 0 0 0 0
VODI 0 0 0 53 15 0 0 0
ODI 0 0 0 0 57 3 0 0
CDI 0 0 0 0 24 45 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 9786 1362 32 3 0 0 0 0
OW 0 239 32 34 0 0 0 0
VODI 0 1 7 52 19 0 0 0
ODI 0 0 0 4 44 2 0 0
CDI 0 0 0 0 33 46 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 12987 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 12987 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 5558 122 0 0 0 0 0 0
OW 8 67 4 4 0 0 0 0
VODI 4 7 2 27 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 5553 105 0 0 0 0 0 0
OW 12 44 0 3 0 0 0 0
VODI 5 47 6 28 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 8531 4 0 0 0 0 0 0
OW 3 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 8525 4 0 0 0 0 0 0
OW 9 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 15746 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 15746 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


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