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: 2022-04-14

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

Model vs. observations, sea ice class contingency tables

Date: 2022-04-08:

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 26 0 0 0
ODI 0 0 0 0 15 26 1 0
CDI 0 0 0 14 68 146 124 6
VCDI 0 0 0 3 159 1322 9350 34606
...date precedes bulletin

Date: 2022-04-10:

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 12 0 0
ODI 0 0 0 0 31 22 0 0
CDI 0 0 0 10 128 125 104 4
VCDI 0 0 0 7 145 1268 7593 36399
...date precedes bulletin

Date: 2022-04-12:

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 1 0 0 0
VODI 0 0 0 0 55 10 0 0
ODI 0 0 0 4 100 57 2 0
CDI 0 0 0 9 96 274 80 0
VCDI 0 0 0 0 78 1647 8667 34786
...date precedes bulletin

Date: 2022-04-14:

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 3 0 0 0
VODI 0 0 0 17 36 37 0 0
ODI 0 0 0 10 102 89 2 0
CDI 0 0 0 13 137 240 84 2
VCDI 0 0 0 13 264 1436 9959 33422
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 2 0 0
OW 0 0 0 0 7 18 0 0
VODI 0 0 0 14 27 36 0 0
ODI 0 0 0 15 105 81 5 0
CDI 0 0 0 11 132 220 80 2
VCDI 0 0 0 13 271 1445 9960 33422

Date: 2022-04-16:

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 4 0 0 0 0
VODI 0 0 0 31 12 34 0 0
ODI 0 0 0 6 107 126 12 0
CDI 0 0 0 0 239 310 132 3
VCDI 0 0 0 0 318 1746 11199 31587
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 2 0 5 0 0
VODI 0 0 0 33 7 63 0 0
ODI 0 0 0 6 133 115 16 0
CDI 0 0 0 0 217 304 125 3
VCDI 0 0 0 0 319 1729 11202 31587

Date: 2022-04-18:

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 15 29 10 0
ODI 0 0 0 0 73 86 19 0
CDI 0 0 0 0 70 510 108 13
VCDI 0 0 0 0 57 1644 10596 32636
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 28 40 0 0
ODI 0 0 0 0 41 140 8 0
CDI 0 0 0 0 70 288 111 25
VCDI 0 0 0 0 73 1801 10614 32624

Date: 2022-04-20:

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 4 0
VODI 0 0 0 0 16 5 18 0
ODI 0 0 0 0 54 34 15 0
CDI 0 0 0 0 87 294 167 10
VCDI 0 0 0 0 74 1468 9780 33840
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 8 0 0 0
VODI 0 0 0 0 22 20 9 0
ODI 0 0 0 0 63 77 19 0
CDI 0 0 0 0 84 220 145 64
VCDI 0 0 0 0 54 1484 9811 33786

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
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 5 0 0 0
VODI 0 0 0 0 7 23 15 0
ODI 0 0 0 0 16 45 18 0
CDI 0 0 0 0 106 223 142 129
VCDI 0 0 0 0 52 1693 9338 34054


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