Description of algorithm
Full domain
American sector
European sector
Asian sector
  Ice concntr, edge pos
  Contingency tables
GODAE regions

Validation of sea ice concentration - Asian sector

Bulletin date: 2022-12-15

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

Model vs. observations, sea ice class contingency tables

Date: 2022-12-09:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1381 40 132 69 17 0 0
OW 0 36 6 121 45 30 0 0
VODI 0 4 2 84 77 22 0 0
ODI 0 0 0 29 127 55 0 0
CDI 0 0 0 12 237 208 1 2
VCDI 0 0 0 0 76 1206 5393 22670
...date precedes bulletin

Date: 2022-12-11:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1104 32 177 89 2 0 0
OW 0 57 18 138 138 20 0 0
VODI 0 6 2 93 95 26 0 0
ODI 0 0 0 30 128 28 0 0
CDI 0 0 0 9 197 100 1 17
VCDI 0 0 0 0 245 880 6245 22205
...date precedes bulletin

Date: 2022-12-13:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1084 26 123 46 0 0 0
OW 0 117 11 101 44 0 0 0
VODI 0 23 12 132 165 27 0 0
ODI 0 0 0 43 180 115 0 0
CDI 0 0 0 9 185 233 12 8
VCDI 0 0 0 0 141 1519 6070 21656
...date precedes bulletin

Date: 2022-12-15:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1044 22 94 37 0 0 0
OW 0 139 10 84 39 4 0 0
VODI 0 52 21 109 106 22 0 0
ODI 0 0 0 55 101 77 0 0
CDI 0 0 0 10 96 131 32 36
VCDI 0 0 0 0 193 631 4774 24163
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1027 24 118 44 0 0 0
OW 0 143 15 71 39 4 0 0
VODI 0 63 11 95 100 12 0 0
ODI 0 2 3 60 94 51 0 0
CDI 0 0 0 8 97 120 24 33
VCDI 0 0 0 0 198 678 4782 24166

Date: 2022-12-17:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1135 13 78 7 0 0 0
OW 0 228 9 74 24 0 0 0
VODI 0 150 15 89 60 0 0 0
ODI 0 32 12 72 99 21 6 0
CDI 0 11 6 56 76 122 35 1
VCDI 0 0 1 111 368 1219 8671 19281
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1074 14 93 7 0 0 0
OW 0 247 9 62 17 0 0 0
VODI 0 182 15 77 51 0 0 0
ODI 0 45 11 88 86 18 7 0
CDI 0 8 6 54 92 73 34 2
VCDI 0 0 1 106 381 1271 8671 19280

Date: 2022-12-19:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1145 13 83 53 0 0 0
OW 0 93 24 104 35 0 0 0
VODI 0 24 9 189 74 7 0 0
ODI 0 13 0 45 165 36 2 0
CDI 0 19 3 25 86 173 39 4
VCDI 0 10 4 114 331 868 7846 20446
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 915 15 80 77 0 0 0
OW 0 215 11 94 38 7 0 0
VODI 0 119 18 145 68 15 0 0
ODI 0 18 2 71 125 46 6 0
CDI 0 21 2 32 73 126 52 26
VCDI 0 16 5 138 363 890 7829 20424

Date: 2022-12-21:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 931 24 86 53 14 0 0
OW 0 61 18 142 32 9 0 0
VODI 0 21 4 149 115 9 0 0
ODI 0 7 1 35 219 21 0 0
CDI 0 2 1 24 125 174 16 24
VCDI 0 0 0 61 174 730 4969 23831
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 733 12 54 47 8 0 0
OW 0 148 9 65 30 18 0 0
VODI 0 101 17 142 66 9 0 0
ODI 0 24 8 102 141 14 0 0
CDI 0 10 0 44 178 114 8 77
VCDI 0 6 2 90 256 794 4977 23778

Date: 2022-12-23:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 3 800 18 78 50 40 0 0
OW 0 52 12 68 29 22 3 0
VODI 0 24 7 92 111 10 6 0
ODI 0 6 3 36 142 35 7 0
CDI 0 1 1 22 80 219 87 39
VCDI 0 0 0 15 180 934 9588 19262
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 3 687 13 60 45 41 0 0
OW 0 118 11 62 33 27 6 0
VODI 0 61 12 71 136 29 6 0
ODI 0 11 2 63 88 72 12 5
CDI 0 5 2 40 78 186 96 39
VCDI 0 1 1 15 212 905 9571 19257


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