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

Validation of sea ice concentration - Asian sector

Bulletin date: 2023-11-16

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

Model vs. observations, sea ice class contingency tables

Date: 2023-11-10:

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 363 2047 40 72 38 6 0 0
OW 0 226 37 73 54 7 0 0
VODI 0 141 41 58 89 23 0 0
ODI 0 20 22 75 64 78 3 0
CDI 0 11 6 30 107 328 114 0
VCDI 0 7 6 36 103 1559 16080 10118
...date precedes bulletin

Date: 2023-11-12:

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 268 1970 37 70 36 9 0 0
OW 0 186 22 42 45 0 0 0
VODI 0 126 59 113 132 32 0 0
ODI 0 29 9 81 68 84 0 0
CDI 0 15 7 40 75 334 144 11
VCDI 0 18 10 28 80 1556 15082 11264
...date precedes bulletin

Date: 2023-11-14:

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 50 2279 46 101 35 0 0 0
OW 0 163 24 39 29 0 0 0
VODI 0 118 36 84 83 13 0 0
ODI 0 19 13 71 106 49 1 0
CDI 0 0 0 16 59 224 39 39
VCDI 0 0 0 5 51 1638 14120 12532
...date precedes bulletin

Date: 2023-11-16:

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 17 1980 35 58 39 24 0 0
OW 0 135 24 16 44 0 0 0
VODI 0 84 22 38 55 17 0 0
ODI 0 22 23 54 107 72 22 0
CDI 0 0 1 30 142 288 129 0
VCDI 0 0 0 0 45 1368 12951 14240
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17 1934 36 57 37 24 0 0
OW 0 183 19 10 44 0 0 0
VODI 0 95 32 49 66 12 0 0
ODI 0 9 18 67 135 102 25 0
CDI 0 0 0 13 107 245 119 0
VCDI 0 0 0 0 43 1386 12958 14240

Date: 2023-11-18:

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 1702 45 66 35 27 0 0
OW 0 159 35 45 17 9 0 0
VODI 0 66 46 52 23 33 0 0
ODI 0 5 8 40 62 57 1 0
CDI 0 1 5 25 89 159 114 0
VCDI 0 0 0 10 91 1135 13699 14221
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1664 45 63 34 28 0 0
OW 0 177 27 46 14 4 0 0
VODI 0 84 43 44 26 27 0 0
ODI 0 7 22 52 62 48 1 0
CDI 0 1 2 28 109 192 104 0
VCDI 0 0 0 5 72 1121 13709 14221

Date: 2023-11-20:

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 1485 102 119 89 25 0 0
OW 0 50 38 81 47 15 0 0
VODI 0 17 24 74 65 17 0 0
ODI 0 0 2 41 95 55 1 0
CDI 0 0 0 10 62 239 6 5
VCDI 0 0 0 2 21 598 12784 15913
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1406 86 101 94 34 0 0
OW 0 92 34 58 34 8 0 0
VODI 0 46 29 89 59 21 0 0
ODI 0 8 14 43 84 43 1 0
CDI 0 0 3 25 66 135 68 30
VCDI 0 0 0 11 42 708 12722 15888

Date: 2023-11-22:

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 1498 79 130 158 9 0 0
OW 0 119 38 73 64 1 0 0
VODI 0 52 23 52 58 3 0 0
ODI 0 24 9 32 103 34 0 0
CDI 0 6 14 27 85 122 14 3
VCDI 0 1 2 24 87 638 10160 18340
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1397 67 115 154 9 0 0
OW 0 98 29 52 58 1 0 0
VODI 0 102 23 54 55 0 0 0
ODI 0 41 16 41 72 11 3 0
CDI 0 32 11 22 110 101 24 3
VCDI 0 30 19 54 106 685 10147 18340

Date: 2023-11-24:

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 2 1588 65 50 26 10 0 0
OW 0 210 54 89 16 2 0 0
VODI 0 123 35 80 50 6 0 0
ODI 0 46 28 35 46 13 4 0
CDI 0 26 18 47 78 63 46 0
VCDI 0 21 26 83 141 843 10715 17397
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2 1488 61 54 27 11 0 0
OW 0 189 48 41 10 7 0 0
VODI 0 138 25 103 54 8 0 0
ODI 0 80 29 43 39 12 0 0
CDI 0 65 21 38 79 97 31 15
VCDI 0 54 42 105 148 802 10734 17382


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