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: 2021-04-08

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

Model vs. observations, sea ice class contingency tables

Date: 2021-04-02:

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 0 0 0
ODI 0 0 0 0 0 9 0 0
CDI 0 0 0 0 2 139 9 0
VCDI 0 0 0 0 94 1402 7532 36679
...date precedes bulletin

Date: 2021-04-04:

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 1 0 0
ODI 0 0 0 0 2 45 1 0
CDI 0 0 0 5 10 190 69 1
VCDI 0 0 0 18 89 1191 8734 35510
...date precedes bulletin

Date: 2021-04-06:

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 0 0 0 0
VODI 0 0 0 0 11 0 0 0
ODI 0 0 0 0 50 16 0 0
CDI 0 0 0 0 91 158 28 0
VCDI 0 0 0 0 188 1432 7152 36740
...date precedes bulletin

Date: 2021-04-08:

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 4 0 0 0
ODI 0 0 0 0 23 2 11 0
CDI 0 0 0 0 91 150 150 33
VCDI 0 0 0 0 284 1126 6760 37232
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 8 0 0 0
ODI 0 0 0 0 20 4 12 0
CDI 0 0 0 0 92 168 154 32
VCDI 0 0 0 0 282 1106 6755 37233

Date: 2021-04-10:

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 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 29 15 1 0
CDI 0 0 0 0 130 224 56 0
VCDI 0 0 0 0 291 2521 7222 35359
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 19 0 0 0
ODI 0 0 0 0 33 14 1 0
CDI 0 0 0 0 122 237 51 0
VCDI 0 0 0 0 294 2509 7227 35359

Date: 2021-04-12:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 3 0 0 0
VODI 0 0 0 0 24 5 0 0
ODI 0 0 0 7 79 45 19 0
CDI 0 0 0 28 203 495 229 0
VCDI 0 0 0 0 270 2545 8148 33766
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 2 0 0 0
ODI 0 0 0 0 17 9 0 0
CDI 0 0 0 4 121 190 123 0
VCDI 0 0 0 31 439 2891 8273 33766

Date: 2021-04-14:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 6 0 0 0
ODI 0 0 0 0 49 66 16 0
CDI 0 0 0 0 238 489 308 4
VCDI 0 0 0 0 349 2526 7296 34519
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 2 0 0 0
ODI 0 0 0 0 13 22 19 0
CDI 0 0 0 0 84 196 169 42
VCDI 0 0 0 0 543 2863 7432 34481

Date: 2021-04-16:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 4 0 0 0
VODI 0 0 0 4 24 4 0 0
ODI 0 0 0 6 66 42 5 0
CDI 0 0 0 11 170 292 167 38
VCDI 0 0 0 18 462 2887 8655 33011
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 2 0 0 0
ODI 0 0 0 0 9 7 6 0
CDI 0 0 0 12 135 252 121 0
VCDI 0 0 0 27 580 2966 8700 33049


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