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

Validation of sea ice concentration - American sector

Bulletin date: 2022-04-28

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

Model vs. observations, sea ice class contingency tables

Date: 2022-04-22:

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 0 0 0 0 0 0 0
OW 0 0 0 0 2 0 0 0
VODI 0 0 0 0 6 11 27 0
ODI 0 0 0 0 24 29 15 0
CDI 0 0 0 0 90 209 117 25
VCDI 0 0 0 0 64 1735 9354 34158
...date precedes bulletin

Date: 2022-04-24:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 2 0 0 0
VODI 0 0 0 0 12 1 4 0
ODI 0 0 0 0 37 38 32 0
CDI 0 0 0 0 34 218 132 62
VCDI 0 0 0 0 76 1571 10033 33614
...date precedes bulletin

Date: 2022-04-26:

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 18 0 0 0
ODI 0 0 0 0 77 21 0 0
CDI 0 0 0 0 129 253 59 1
VCDI 0 0 0 0 243 1832 11702 31531
...date precedes bulletin

Date: 2022-04-28:

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 8 19 0 0 0
ODI 0 0 0 19 43 29 0 0
CDI 0 5 1 30 105 323 81 11
VCDI 0 0 0 73 422 2389 12796 29512
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 4 0 0 0
VODI 0 0 0 7 13 1 0 0
ODI 0 0 0 17 44 34 0 0
CDI 0 5 1 30 101 328 86 26
VCDI 0 0 0 76 427 2378 12791 29497

Date: 2022-04-30:

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 0 0 0 0 0 0 0
OW 0 0 0 0 3 2 0 0
VODI 0 0 0 7 13 8 0 0
ODI 0 2 2 8 32 46 20 0
CDI 0 8 2 16 124 269 174 65
VCDI 0 3 1 31 593 2711 11157 30569
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 1 0 0
OW 0 0 0 1 3 5 0 0
VODI 0 0 0 6 12 4 0 0
ODI 0 2 2 7 35 45 15 0
CDI 0 8 1 13 113 291 173 58
VCDI 0 3 2 35 602 2690 11163 30576

Date: 2022-05-02:

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 0 0 0 0 0 0 0
OW 0 0 0 0 2 0 0 0
VODI 0 0 0 6 38 8 0 0
ODI 0 0 0 12 97 67 4 0
CDI 0 0 0 21 247 393 152 8
VCDI 0 0 0 43 639 2967 12488 28674
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 1 0 0 0
OW 0 0 0 0 3 0 0 0
VODI 0 0 0 0 12 4 0 0
ODI 0 0 0 2 63 54 9 0
CDI 0 0 0 12 199 286 245 12
VCDI 0 0 0 68 745 3091 12390 28670

Date: 2022-05-04:

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 0 0 0 0 0 0 0
OW 0 0 0 0 1 0 0 0
VODI 0 0 0 5 24 1 0 0
ODI 0 0 0 18 91 51 1 0
CDI 0 0 0 32 287 678 181 40
VCDI 0 0 0 66 933 2904 12091 28462
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 1 0 0 0
VODI 0 0 0 0 4 3 0 0
ODI 0 0 0 4 61 39 4 0
CDI 0 0 0 18 245 453 252 45
VCDI 0 0 0 99 1025 3139 12017 28457

Date: 2022-05-06:

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 0 0 0 0 0 0 0
OW 0 0 0 0 1 0 0 0
VODI 0 0 0 19 25 0 0 0
ODI 0 0 0 30 91 28 0 0
CDI 0 0 0 44 289 453 137 40
VCDI 0 0 0 74 1044 2718 12657 28216
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 3 14 0 0 0
ODI 0 0 0 20 70 33 0 0
CDI 0 0 0 48 174 299 119 52
VCDI 0 0 0 96 1192 2867 12675 28204


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