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: 2020-01-09

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-01-13

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 63 0 0 0 0 0 0
OW 0 59 2 10 0 0 0 0
VODI 0 37 4 16 6 0 0 0
ODI 0 12 3 14 9 0 0 0
CDI 0 3 6 32 24 26 1 0
VCDI 0 0 0 17 83 645 7272 28558
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 34 0 0 0 0 0 0
OW 0 37 0 0 0 0 0 0
VODI 0 53 1 8 0 0 0 0
ODI 0 25 3 11 6 0 0 0
CDI 0 24 5 11 9 6 0 0
VCDI 0 1 6 59 107 665 7273 28558

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 2
VCDI 0 0 0 0 0 28 751 2352
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 28 751 2351

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 30 14 6
VCDI 0 0 0 0 0 27 1392 8513
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 30 3 12
VCDI 0 0 0 0 0 27 1403 8507

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 12 2 0
ODI 0 0 0 0 9 46 0 0
CDI 0 0 0 0 7 68 23 0
VCDI 0 0 0 0 4 440 2532 2511
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 35 2 0
ODI 0 0 0 0 8 45 0 0
CDI 0 0 0 0 7 82 26 0
VCDI 0 0 0 0 5 404 2529 2511

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 1
VCDI 0 0 0 0 0 13 1289 5943
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 13 1289 5941

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 4 0 0
CDI 0 0 0 0 0 55 24 0
VCDI 0 0 0 0 0 93 2297 2853
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 55 29 1
VCDI 0 0 0 0 0 97 2292 2852

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 8 20 5 0 0
ODI 0 2 1 7 51 107 4 0
CDI 0 7 0 14 47 202 61 10
VCDI 0 10 1 15 26 395 3920 1418
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 12 2 0 0
ODI 0 0 0 2 24 17 0 0
CDI 0 0 1 3 19 91 38 10
VCDI 0 19 1 39 89 599 3947 1418

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3606 3793 69 337 120 22 0 0
OW 0 45 16 100 140 19 2 0
VODI 0 24 5 60 227 47 6 0
ODI 0 11 1 7 108 77 12 0
CDI 0 13 0 3 81 123 22 0
VCDI 0 26 2 15 29 605 1558 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3606 3759 64 303 121 17 1 0
OW 0 68 19 99 95 19 3 0
VODI 0 26 5 80 143 40 10 0
ODI 0 12 1 20 124 58 14 0
CDI 0 14 2 2 111 106 28 0
VCDI 0 33 2 18 111 653 1544 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 5568 3463 13 117 26 0 0 0
OW 0 146 9 66 13 0 0 0
VODI 0 84 6 83 59 3 0 0
ODI 0 32 6 44 77 9 0 0
CDI 0 33 3 39 32 69 6 0
VCDI 0 6 4 62 162 516 928 12
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5568 3215 11 99 23 0 0 0
OW 0 190 3 23 12 0 0 0
VODI 0 161 7 49 11 3 0 0
ODI 0 79 6 66 25 2 0 0
CDI 0 44 6 48 57 17 5 0
VCDI 0 75 8 126 241 575 929 12

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9385 2505 21 70 73 70 49 0
OW 0 85 12 42 59 37 12 0
VODI 0 18 6 43 26 30 16 0
ODI 0 9 1 17 47 42 17 0
CDI 0 0 0 11 41 80 69 0
VCDI 0 0 0 6 19 7 63 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9385 2534 30 111 145 135 82 0
OW 0 40 4 23 23 25 10 0
VODI 0 28 2 14 27 26 16 0
ODI 0 15 3 15 10 31 47 0
CDI 0 0 1 19 43 47 66 0
VCDI 0 0 0 7 17 2 5 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 0 367 17 69 2 0 0 0
OW 0 11 2 55 21 0 0 0
VODI 0 4 2 31 54 0 0 0
ODI 0 0 0 11 55 0 0 0
CDI 0 0 0 2 56 21 0 0
VCDI 0 0 0 0 75 904 3118 926
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 308 11 33 0 0 0 0
OW 0 44 6 44 4 0 0 0
VODI 0 21 2 45 32 0 0 0
ODI 0 8 1 26 44 0 0 0
CDI 0 1 1 18 62 4 0 0
VCDI 0 0 0 2 121 921 3118 926

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 8 23 17 38
VCDI 0 0 0 0 176 1121 2306 4898
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 4 20 25 46
VCDI 0 0 0 0 180 1124 2298 4890

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13488 3544 37 127 8 0 0 0
OW 0 207 15 112 19 0 0 0
VODI 0 100 11 114 96 0 0 0
ODI 0 22 2 47 188 2 0 0
CDI 0 9 2 31 269 37 0 0
VCDI 0 0 0 0 460 1186 76 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13488 3496 34 131 5 0 0 0
OW 0 164 15 102 28 0 0 0
VODI 0 159 8 88 93 0 0 0
ODI 0 43 6 53 89 10 0 0
CDI 0 17 2 29 209 34 0 0
VCDI 0 3 2 28 616 1181 76 0


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