A Comparison of GFS Analyses and
Forecasts to Other Centers
May 2007
Height
500 hPa
12 hour errors
1 day errors
Time-Mean Differences between Analyses
RMS
12 hour
errors
1 day errors
Difference in analyses
RMS Error
Zonal
mean-12h
Zonal
mean-1day
Zonal
mean JMA-1day
40-60N-12
hours
40-60N-1day
40-60N
JMA-1day
12hour
Differences in 12 hour RMS errors
1 day
Differences in 1 day RMS errors
RMS Difference-Analyses
Zonal
mean
Zonal
mean-JMA
Zonal
mean-ocean
Zonal
mean-JMA-ocean
40-50N
40-50N
JMA
Regional
Wind Magnitude
Zonal means
Analyses
12 hour errors
1 day errors
Time-Mean Differences between Analyses
Time-Mean Differences between 12 hour forecasts
Time-Mean Differences between 1-day forecasts
30-40N
Analyses
12 hour errors
1 day errors
Time-Mean Differences between Analyses
Time-Mean Differences between 12 hour forecasts
Time-Mean Differences between 1-day forecasts
Equator
Analyses
12 hour errors
1 day errors
Time-Mean Differences between Analyses
Time-Mean Differences between 12 hour
forecasts
Time-Mean Differences between 1-day forecasts
200 hPa
30-40N
Analyses
12 hour errors
1 day errors
Time-Mean Differences between Analyses
Time-Mean Differences between 12 hour
forecasts
Time-Mean Differences between 1-day forecasts
850 hPa
Analyses
12 hour errors
1 day errors
Time-Mean Differences between Analyses
Time-Mean Differences between 12 hour forecasts
Time-Mean Differences between 1-day forecasts
RMS Wind Error
Zonal means
12 hour errors
1 day errors
Time-Mean Differences between 12 hour
forecasts
Time-Mean Differences between 1-day forecasts
20S-20N
12
hour errors
1
day errors
Time-Mean
Differences between 12 hour forecasts
Time-Mean
Differences between 1-day forecasts
200 hPa
12 hour errors
1 day errors
Time-Mean Differences between 12 hour forecasts
Time-Mean Differences between 1-day forecasts
850 hPa
12 hour errors
1 day errors
Time-Mean Differences between 12 hour forecasts
Time-Mean Differences between 1-day forecasts
Wind
Western Hemisphere
200
500
850
Transient eddy kinetic energy
Zonal Mean
Zonal Mean 12 Hour Errors
Zonal Mean 1-Day Errors
Zonal Mean Differences
20S-20N Differences
