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: 2021-07-15

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-07-19

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 0 471 14 21 0 0 0 0
OW 0 76 27 141 7 0 0 0
VODI 0 7 6 374 156 2 0 0
ODI 0 0 0 106 4066 329 0 0
CDI 0 0 0 18 2546 13312 1419 0
VCDI 0 0 0 0 6 7216 6581 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 457 19 52 10 0 0 0
OW 0 71 20 138 27 6 0 0
VODI 0 25 7 287 359 15 1 0
ODI 0 1 1 128 3314 1208 25 0
CDI 0 0 0 55 3062 11952 1992 0
VCDI 0 0 0 0 9 7678 5982 1

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 0 303 2 12 0 0 0 0
OW 0 12 0 20 7 0 0 0
VODI 0 4 1 30 20 0 0 0
ODI 0 0 1 13 69 15 0 0
CDI 0 1 0 4 166 687 0 0
VCDI 0 2 0 6 395 831 532 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 305 2 17 7 0 0 0
OW 0 10 0 6 9 0 0 0
VODI 0 4 1 28 27 0 0 0
ODI 0 0 1 21 40 21 0 0
CDI 0 0 0 4 109 541 0 0
VCDI 0 3 0 9 465 971 532 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 0 625 14 111 0 0 0 0
OW 0 28 8 102 15 0 0 0
VODI 0 22 5 144 140 0 0 0
ODI 0 2 1 30 1824 7 0 0
CDI 0 0 0 0 1676 1332 0 0
VCDI 0 0 0 0 0 3168 728 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 579 14 144 12 0 0 0
OW 0 81 7 91 83 0 0 0
VODI 0 13 6 122 406 0 0 0
ODI 0 4 1 30 685 6 0 0
CDI 0 0 0 0 2436 662 0 0
VCDI 0 0 0 0 33 3839 728 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 1110 1435 13 34 2 0 0 0
OW 0 38 29 118 6 0 0 0
VODI 0 0 0 197 112 0 0 0
ODI 0 0 0 20 1071 203 0 0
CDI 0 0 0 0 126 1140 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 1110 1407 14 61 8 0 0 0
OW 0 59 26 118 57 0 0 0
VODI 0 7 2 170 312 0 0 0
ODI 0 0 0 20 763 413 0 0
CDI 0 0 0 0 177 930 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 53 2794 28 68 0 0 0 0
OW 0 338 79 611 13 0 0 0
VODI 0 12 6 1122 341 0 0 0
ODI 0 0 0 0 1777 4 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 53 2733 49 383 2 0 0 0
OW 0 375 51 657 84 0 0 0
VODI 0 36 13 739 813 0 0 0
ODI 0 0 0 22 1232 4 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 1658 2861 12 15 2 0 0 0
OW 0 78 16 64 8 0 0 0
VODI 0 3 5 122 68 0 0 0
ODI 0 0 0 5 358 2 0 0
CDI 0 0 0 0 24 25 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 1658 2810 10 17 4 0 0 0
OW 0 118 6 42 16 0 0 0
VODI 0 14 17 112 55 0 0 0
ODI 0 0 0 35 353 1 0 0
CDI 0 0 0 0 32 26 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 2512 1822 21 51 0 0 0 0
OW 0 32 12 117 5 4 0 0
VODI 0 0 0 54 111 7 0 0
ODI 0 0 0 0 134 53 0 0
CDI 0 0 0 0 31 482 116 0
VCDI 0 0 0 0 0 72 695 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2512 1823 24 106 8 0 0 0
OW 0 31 8 97 66 5 0 0
VODI 0 0 1 19 160 50 0 0
ODI 0 0 0 0 18 200 127 0
CDI 0 0 0 0 29 302 526 0
VCDI 0 0 0 0 0 61 158 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 9698 1383 4 15 0 0 0 0
OW 0 40 11 58 1 0 0 0
VODI 0 0 0 78 18 0 0 0
ODI 0 0 0 3 22 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 9698 1320 2 11 0 0 0 0
OW 0 76 7 45 3 0 0 0
VODI 0 27 6 64 5 0 0 0
ODI 0 0 0 34 33 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 8548 2349 22 81 0 0 0 0
OW 0 53 24 157 0 0 0 0
VODI 0 0 0 247 86 2 0 0
ODI 0 0 0 20 105 0 0 0
CDI 0 0 0 0 2 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 8548 2302 27 101 0 0 0 0
OW 0 79 11 182 12 0 0 0
VODI 0 21 8 193 76 0 0 0
ODI 0 0 0 29 105 2 0 0
CDI 0 0 0 0 0 0 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 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 1205 3557 43 117 37 0 0 0
OW 0 79 35 355 38 0 0 0
VODI 0 0 0 205 82 0 0 0
ODI 0 0 0 1 42 2 0 0
CDI 0 0 0 0 3 2 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 1205 3557 57 262 56 0 0 0
OW 0 71 18 303 43 0 0 0
VODI 0 8 3 112 75 2 0 0
ODI 0 0 0 1 28 2 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 5628 2091 35 93 27 0 0 0
OW 0 39 11 87 41 0 0 0
VODI 0 0 0 106 116 3 0 0
ODI 0 0 0 7 268 24 0 0
CDI 0 0 0 0 8 3 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 5628 2094 39 136 91 0 0 0
OW 0 32 4 47 68 12 0 0
VODI 0 4 3 98 174 18 0 0
ODI 0 0 0 12 97 0 0 0
CDI 0 0 0 0 30 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 19588 583 3 35 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 19588 583 3 35 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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