A Comparison of GFS Analyses and Forecasts to Other Centers

 

November 2005

 

Height

 

500 hPa

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between Analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

EC-Can

EC-UK

 

 

RMS

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Difference in analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

EC-Can

EC-UK

 

 

RMS Error

 

Zonal mean

 

40-60N

 

1 day

 

Can

EC

GFS

UK

FNOC

 

Differences in 1 day RMS errors

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

 

RMS Difference-Analyses

 

Zonal mean

 

Zonal mean-ocean

 

40-50N

 

Regional

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

EC-Can

EC-UK

 

 

Wind Magnitude

 

Zonal means

 

Analyses

 

Can

EC

GFS

UK

FNOC

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between Analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

30-40N

 

Analyses

 

Can

EC

GFS

UK

FNOC

 

1 day errors

 

Can

EC

GFS

UK

fnoc

 

Time-Mean Differences between Analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

Equator

 

Analyses

 

Can

EC

GFS

UK

FNOC

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between Analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

200 hPa

 

30-40N

 

Analyses

 

Can

EC

GFS

UK

FNOC

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between Analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

850 hPa

 

Analyses

 

Can

EC

GFS

UK

FNOC

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between Analyses

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

RMS Wind Error

 

Zonal means

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

200 hPa

850 hPa

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

20S-20N

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

 

 

 

200 hPa

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

850 hPa

 

1 day errors

 

Can

EC

GFS

UK

FNOC

 

Time-Mean Differences between 1-day forecasts

 

GFS-Can

GFS-EC

GFS-UK

GFS-FNOC

Can-UK

Can-EC

EC-UK

 

 

 

Wind

 

Western Hemisphere

 

200

 

CAN anl

EC anl

GFS anl

MO anl

 

CAN 1dy

EC 1dy

GFS 1dy

MO 1dy

 

CAN 1dy error

EC 1dy error

GFS 1dy error

MO 1dy error

FNOC 1dy error

GFS-Can anl

GFS-EC anl

 

GFS-MO anl

GFS-FNOC anl

GFS-Can 1dy

GFS-EC 1dy

 

GFS-MO 1dy

GFS-FNOC 1dy

 

500

 

CAN anl

EC anl

GFS anl

MO anl

 

CAN 1dy

EC 1dy

GFS 1dy

MO 1dy

 

CAN 1dy error

EC 1dy error

GFS 1dy error

MO 1dy error

FNOC 1dy error

GFS-Can anl

GFS-EC anl

 

GFS-MO anl

GFS-FNOC anl

GFS-Can 1dy

GFS-EC 1dy

 

GFS-MO 1dy

GFS-FNOC 1dy

 

850

 

CAN anl

EC anl

GFS anl

MO anl

 

CAN 1dy

EC 1dy

GFS 1dy

MO 1dy

 

CAN 1dy error

EC 1dy error

GFS 1dy error

MO 1dy error

FNOC 1dy error

GFS-Can anl

GFS-EC anl

 

GFS-MO anl

GFS-FNOC anl

GFS-Can 1dy

GFS-EC 1dy

 

GFS-MO 1dy

GFS-FNOC 1dy

 

Transient eddy kinetic energy

 

Zonal Mean

 

200 anl

200 1dy

850 anl

850 1dy

 

Zonal Mean 1-Day Errors

 

CAN

EC

GFS

FNOC

MO

 

Zonal Mean Differences

 

ANL

GFS-CAN

GFS-EC

GFS-FNOC

GFS-MO

1 day

GFS-CAN

GFS-EC

GFS-FNOC

GFS-MO

 

20S-20N Differences

 

ANL

GFS-CAN

GFS-EC

GFS-FNOC

GFS-MO

1 day

GFS-CAN

GFS-EC

GFS-FNOC

GFS-MO