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: 2022-03-17

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-03-21

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 0 101 4 68 51 0 0 0
OW 0 1 1 16 21 9 0 0
VODI 0 5 1 23 30 23 0 0
ODI 0 96 15 68 56 31 0 0
CDI 0 185 16 112 118 125 2 0
VCDI 0 103 10 90 168 1525 4646 29182
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 101 4 73 57 8 0 0
OW 0 1 1 16 28 17 0 0
VODI 0 4 1 12 22 36 0 0
ODI 0 17 3 17 9 42 0 0
CDI 0 36 3 10 7 77 5 0
VCDI 0 332 35 249 321 1533 4643 29182

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 23 371 2739
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 23 371 2739

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 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 9982
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 0 0 9982

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 0 0 0
VCDI 0 0 0 0 0 12 450 5192
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 12 450 5192

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 0 3
VCDI 0 0 0 0 0 10 507 6726
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 22
VCDI 0 0 0 0 0 10 507 6707

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 1 0 0
CDI 0 0 0 0 0 33 19 0
VCDI 0 0 0 0 0 79 2703 2491
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 11 0 0
CDI 0 0 0 0 0 31 31 1
VCDI 0 0 0 0 0 71 2691 2490

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 101 5 16 0 0 0 0
OW 0 36 2 4 3 0 0 0
VODI 0 132 12 26 6 4 0 0
ODI 0 57 6 37 75 26 0 0
CDI 0 61 6 41 121 207 41 6
VCDI 0 23 2 28 116 624 3380 1127
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 54 6 17 0 0 0 0
OW 0 25 0 2 3 0 0 0
VODI 0 38 2 3 2 0 0 0
ODI 0 47 4 12 22 2 0 0
CDI 0 53 6 25 34 87 0 0
VCDI 0 193 15 93 260 772 3421 1133

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4195 3624 27 95 13 0 0 0
OW 0 292 18 87 56 0 0 0
VODI 0 108 14 175 123 0 0 0
ODI 0 45 18 63 239 41 0 0
CDI 0 14 1 49 210 286 0 0
VCDI 0 0 0 25 160 1219 134 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4195 3114 21 81 28 0 0 0
OW 0 408 16 85 70 0 0 0
VODI 0 331 11 103 94 11 0 0
ODI 0 131 8 64 77 37 0 0
CDI 0 74 13 85 211 130 0 0
VCDI 0 25 9 76 321 1368 134 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 5532 2905 11 42 0 0 0 0
OW 0 64 14 99 11 0 0 0
VODI 0 13 10 115 70 0 0 0
ODI 0 2 2 45 139 6 0 0
CDI 0 0 0 18 155 114 5 0
VCDI 0 0 0 1 107 1413 803 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5532 2817 9 40 2 0 0 0
OW 0 128 13 76 17 0 0 0
VODI 0 35 13 109 76 2 0 0
ODI 0 3 1 60 101 17 0 0
CDI 0 1 1 31 136 137 6 0
VCDI 0 0 0 4 150 1377 802 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 8054 3255 48 240 183 40 3 0
OW 0 130 10 50 102 4 0 0
VODI 0 31 11 72 103 30 0 0
ODI 0 0 0 18 108 50 2 0
CDI 0 0 0 0 52 226 109 0
VCDI 0 0 0 0 0 5 52 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8054 3274 56 289 290 43 3 0
OW 0 72 1 33 76 31 0 0
VODI 0 67 6 22 67 68 5 0
ODI 0 3 6 31 49 82 29 0
CDI 0 0 0 5 66 123 103 0
VCDI 0 0 0 0 0 8 26 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 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 5 164 2766 2868
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 2 0
VCDI 0 0 0 0 5 164 2764 2868

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 0 0 0
CDI 0 0 0 0 0 15 4 0
VCDI 0 0 0 0 0 478 4898 3192
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 19 9 0
VCDI 0 0 0 0 0 474 4893 3192

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8620 3915 63 488 412 99 0 0
OW 4 62 8 169 196 69 0 0
VODI 0 4 0 115 287 154 0 0
ODI 0 0 0 2 310 333 9 0
CDI 0 0 0 0 479 931 70 0
VCDI 0 0 0 0 440 1409 1560 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8624 3941 66 562 523 152 0 0
OW 0 35 3 66 178 215 0 0
VODI 0 5 2 105 168 287 12 0
ODI 0 0 0 38 193 285 15 0
CDI 0 0 0 3 590 616 48 0
VCDI 0 0 0 0 472 1440 1564 1


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