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: 2025-03-27

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: 2025-03-31

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 20 8 19 0 0 0 0
OW 0 5 2 27 20 0 0 0
VODI 0 0 0 6 43 0 0 0
ODI 0 0 0 0 37 48 0 0
CDI 0 0 0 0 10 295 218 0
VCDI 0 0 0 0 2 207 6467 29468
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 13 7 10 0 0 0 0
OW 0 12 3 34 26 0 0 0
VODI 0 0 0 8 40 22 0 0
ODI 0 0 0 0 26 72 1 0
CDI 0 0 0 0 16 262 343 0
VCDI 0 0 0 0 4 194 6341 29468

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 0 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 7 479 2633
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 7 479 2633

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 3 9
CDI 0 0 0 0 0 0 25 35
VCDI 0 0 0 0 0 43 1083 8780
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 4 2
CDI 0 0 0 0 0 0 51 37
VCDI 0 0 0 0 0 43 1056 8785

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 2 4 0
VCDI 0 0 0 0 0 133 2445 3069
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 4 0 1
VCDI 0 0 0 0 0 131 2449 3068

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 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 4 0
VCDI 0 0 0 0 0 27 1114 6079
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 7 0
VCDI 0 0 0 0 0 27 1111 6079

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 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 2 0 2
CDI 0 0 0 0 0 26 7 15
VCDI 0 0 0 0 0 77 2126 3044
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 6 2 2
CDI 0 0 0 0 0 39 22 13
VCDI 0 0 0 0 0 60 2109 3046

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 149 0 0 0 0 0 0
OW 0 138 5 1 1 0 0 0
VODI 0 46 41 45 4 0 0 0
ODI 0 1 5 79 30 10 1 0
CDI 0 0 0 58 276 289 23 0
VCDI 0 0 0 0 99 1714 3292 10
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 88 0 0 0 0 0 0
OW 0 110 1 0 0 0 0 0
VODI 0 103 18 17 9 1 0 0
ODI 0 28 27 50 30 10 0 0
CDI 0 5 5 112 229 260 50 0
VCDI 0 0 0 4 142 1742 3266 10

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4577 3223 45 9 0 0 0 0
OW 16 250 78 172 0 0 0 0
VODI 0 56 23 248 180 4 0 0
ODI 0 12 8 50 292 95 0 0
CDI 0 2 0 31 117 679 137 0
VCDI 0 0 0 0 17 161 840 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4572 3123 50 31 0 0 0 0
OW 20 255 62 174 8 0 0 0
VODI 1 94 22 197 184 11 0 0
ODI 0 48 8 57 251 252 0 0
CDI 0 23 12 42 134 501 415 0
VCDI 0 0 0 9 29 175 562 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 4473 3249 95 96 7 0 0 0
OW 0 87 70 195 59 0 0 0
VODI 0 0 1 103 171 17 0 0
ODI 0 0 0 9 127 83 0 0
CDI 0 0 0 0 38 326 30 0
VCDI 0 0 0 0 9 652 1670 129
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4473 3202 80 91 20 0 0 0
OW 0 134 84 149 36 0 0 0
VODI 0 0 2 144 126 3 0 0
ODI 0 0 0 17 124 36 0 0
CDI 0 0 0 2 77 363 8 0
VCDI 0 0 0 0 28 676 1692 129

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7877 3202 134 195 31 4 0 0
OW 0 28 20 186 93 2 0 0
VODI 0 0 0 117 85 10 0 0
ODI 0 0 0 30 71 24 0 0
CDI 0 0 0 6 110 89 0 0
VCDI 0 0 0 0 105 325 243 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7877 3188 129 155 29 0 0 0
OW 0 40 20 160 74 6 0 0
VODI 0 2 5 118 73 12 0 0
ODI 0 0 0 65 58 31 0 0
CDI 0 0 0 36 107 101 25 0
VCDI 0 0 0 0 154 304 218 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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 2 0 0
VODI 0 0 0 0 0 2 0 0
ODI 0 0 0 11 4 3 0 0
CDI 0 0 0 8 70 223 85 0
VCDI 0 0 0 0 67 782 3769 777
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 2 0 0
ODI 0 0 0 0 10 27 6 0
CDI 0 0 0 15 16 87 87 0
VCDI 0 0 0 4 115 896 3761 777

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 8 2 0
CDI 0 0 0 0 0 38 30 8
VCDI 0 0 0 0 0 441 4480 3531
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 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 1 0
CDI 0 0 0 0 0 49 36 27
VCDI 0 0 0 0 0 438 4475 3512

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6763 3678 52 122 9 0 0 0
OW 15 179 64 210 49 0 0 0
VODI 0 10 14 236 204 5 0 0
ODI 0 0 0 29 365 90 0 0
CDI 0 0 0 7 227 1334 36 0
VCDI 0 0 0 3 33 830 1136 46
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6778 3634 48 107 7 0 0 0
OW 0 214 62 252 56 3 0 0
VODI 0 17 18 180 171 17 0 0
ODI 0 2 2 44 253 97 1 0
CDI 0 0 0 18 328 890 42 0
VCDI 0 0 0 6 72 1252 1129 46


Generated by /metno/routine/sms/V3/SIconcentrationValidation5/SICmultiWebPage5GODAE.sh Fri Apr 11 02:50:47 UTC 2025 on arcval2

 
See Met Privacy