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: 2022-02-24

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

Model vs. observations, sea ice class contingency tables

Date: 2022-02-18:

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 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 25 0 0
VCDI 0 0 0 0 1 1001 4507 40332
...date precedes bulletin

Date: 2022-02-20:

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 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 3 12 0 0
VCDI 0 0 0 0 27 1202 5247 39375
...date precedes bulletin

Date: 2022-02-22:

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 0 0 0 0
VODI 0 0 0 0 0 0 2 0
ODI 0 0 0 0 0 0 31 7
CDI 0 0 0 0 7 111 66 26
VCDI 0 0 0 7 85 1635 7903 35986
...date precedes bulletin

Date: 2022-02-24:

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 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 4 2 0
CDI 0 0 0 0 0 1 23 1
VCDI 0 0 0 0 17 1097 5184 39537
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 2 0
CDI 0 0 0 0 0 1 24 1
VCDI 0 0 0 0 17 1097 5183 39537

Date: 2022-02-26:

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 0 23 0 0
ODI 0 0 0 0 9 29 9 0
CDI 0 0 0 3 56 89 24 0
VCDI 0 0 0 21 192 1597 10030 33784
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 15 0 0
ODI 0 0 0 0 10 36 7 0
CDI 0 0 0 4 57 97 17 0
VCDI 0 0 0 20 190 1590 10039 33784

Date: 2022-02-28:

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 0 0 14 5 0
ODI 0 0 0 0 1 35 19 0
CDI 0 0 0 0 23 148 63 12
VCDI 0 0 0 0 145 1266 9451 34684
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 29 20 0
ODI 0 0 0 0 0 22 22 0
CDI 0 0 0 0 28 218 102 4
VCDI 0 0 0 0 141 1194 9394 34692

Date: 2022-03-02:

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 0 0 0 0
VODI 0 0 0 0 0 1 3 0
ODI 0 0 0 1 2 36 34 0
CDI 0 0 0 7 26 122 66 16
VCDI 0 0 0 31 254 1405 8971 34891
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 8 27 0
ODI 0 0 0 0 0 41 36 1
CDI 0 0 0 10 28 184 82 38
VCDI 0 0 0 29 254 1331 8929 34868

Date: 2022-03-04:

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 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 9 8 0 0
CDI 0 0 0 0 20 90 60 2
VCDI 0 0 0 16 272 1355 8047 35987
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 5 20 0
ODI 0 0 0 0 8 14 35 7
CDI 0 0 0 0 18 103 71 24
VCDI 0 0 0 16 275 1331 7981 35958


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