Validation of ice thickness - Full domain
Bulletin date: 2018-11-22
Model: ARC MFC - TOPAZ
Data source: UCL CryoSAT-2 sea ice thickness
Validation statistics summary
Bias (m) | RMS (m) | total grids | low SIT | OK SIT | high SIT | |
---|---|---|---|---|---|---|
Best estimate | -1.27 | 1.4 | 29210 | 25808 | 3380 | 22 |
Day 1 forecast | -1.27 | 1.4 | 29210 | 25788 | 3400 | 22 |
Day 4 forecast | -1.28 | 1.4 | 29210 | 26039 | 3149 | 22 |
Day 7 forecast | -1.25 | 1.38 | 29210 | 25278 | 3908 | 24 |
Day 10 forecast | -1.28 | 1.41 | 29210 | 26274 | 2914 | 22 |
Numbers in the three rightmost columns are grid counts. Regions with high/low sea ice thickness correspond to areas with model offsets from the gridded observations outside of one standard deviation. (Standard deviations are provided in the observational product.)
Definition of categories:
Category | Sea ice thickness |
---|---|
c1 | <1m |
c2 | 1 - 1.5m |
c3 | 1.5 - 2m |
c4 | 2 - 2.5m |
c5 | 2.5 - 3m |
c6 | >3m |
Best estimate vs. observations
Contingency table
observations | |||||||||
---|---|---|---|---|---|---|---|---|---|
open | c1 | c2 | c3 | c4 | c5 | c6 | |||
m o d e l |
open | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
c1 | 0 | 0.072 | 0.26 | 0.21 | 0.16 | 0.07 | 0.01 | ||
c2 | 0 | 0 | 0 | 0.005 | 0.05 | 0.053 | 0.064 | ||
c3 | 0 | 0 | 0.001 | 0.002 | 0.003 | 0.011 | 0.023 | ||
c4 | 0 | 0 | 0 | 0 | 0 | 0.001 | 0.005 | ||
c5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
c6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
See category definitions for details.
Statistical distribution
Observed sea ice thickness from CryoSAT
Sea ice thickness, best estimate product
Day 1 forecast vs. observations
Contingency table
observations | |||||||||
---|---|---|---|---|---|---|---|---|---|
open | c1 | c2 | c3 | c4 | c5 | c6 | |||
m o d e l |
open | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
c1 | 0 | 0.072 | 0.26 | 0.21 | 0.156 | 0.066 | 0.01 | ||
c2 | 0 | 0 | 0 | 0.005 | 0.054 | 0.057 | 0.061 | ||
c3 | 0 | 0 | 0.001 | 0.002 | 0.003 | 0.011 | 0.026 | ||
c4 | 0 | 0 | 0 | 0 | 0 | 0.001 | 0.005 | ||
c5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
c6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
See category definitions for details.
Statistical distribution
Sea ice thickness, day 1 forecast
Day 7 forecast vs. observations
Contingency table
observations | |||||||||
---|---|---|---|---|---|---|---|---|---|
open | c1 | c2 | c3 | c4 | c5 | c6 | |||
m o d e l |
open | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
c1 | 0 | 0.072 | 0.26 | 0.209 | 0.152 | 0.062 | 0.008 | ||
c2 | 0 | 0 | 0 | 0.005 | 0.057 | 0.06 | 0.059 | ||
c3 | 0 | 0 | 0.001 | 0.002 | 0.003 | 0.011 | 0.029 | ||
c4 | 0 | 0 | 0 | 0 | 0 | 0.001 | 0.006 | ||
c5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
c6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
See category definitions for details.
Statistical distribution
Sea ice thickness, day 7 forecast
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