html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> xmlns:w="urn:schemas-microsoft-com:office:word" xmlns="http://www.w3.org/TR/REC-html40"> A Comparison of PRE13A Analyses and Forecasts to Other Centers

A Comparison of PRE13A Analyses and Forecasts to ECMWF

June 2010

Height

Zonal means

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

500 hPa

Zonally Asymmetric

ECMWF	PRE13A
Analysis	Analysis
3 day	3 day
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

Temperature

Zonal mean

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

Equator

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

925 hPa

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

850 hPa

Zonally Asymmetric

ECMWF	PRE13A
Analysis	Analysis
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

700 hPa

Zonally Asymmetric

ECMWF	PRE13A
Analysis	Analysis
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

Wind Magnitude

Zonal means

ECMWF	PRE13A
Anl	Anl
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences in Time-Mean Wind Manitude PRE13A-EC

Time-Mean Difference In Wind Magnitude (RMS) PRE13A-EC

27.5-32.5N

Differences in Time-Mean Wind Manitude PRE13A-EC

Equator

Differences in Time-Mean Wind Manitude PRE13A-EC

45S

Differences in Time-Mean Wind Manitude PRE13A-EC

100 hPa

Differences in Time-Mean Wind Magnitude PRE13A-EC

Time-Mean Difference In Wind Magnitude (RMS) PRE13A-EC

250 hPa

Zonal Mean

Time-Mean Wind Magnitude

ECMWF	PRE13A
Anl	Anl
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3day	3 day
5 day	5 day
10 day	10 day

Differences in Time-Mean Wind Manitude PRE13A-EC

850 hPa

Time-Mean Wind Magnitude

ECMWF	PRE13A
Anl	Anl
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3day	3 day
5 day	5 day
10 day	10 day

Differences in Time-Mean Wind Manitude PRE13A-EC

500 hPa

Time-Mean Wind Magnitude

ECMWF	PRE13A
Anl	Anl
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3day	3 day
5 day	5 day
10 day	10 day

Differences in Time-Mean Wind Manitude PRE13A-EC

300 hPa

Time-Mean Difference In Wind Magnitude (RMS) PRE13A-EC

500 hPa

Time-Mean Difference In Wind Magnitude (RMS) PRE13A-EC

850 hPa

Time-Mean Difference In Wind Magnitude (RMS) PRE13A-EC

Transient Eddy Kinetic Energy

Zonal means

ECMWF	PRE13A
Anl	Anl
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

250 hPa

Time means

ECMWF	PRE13A
Anl	Anl
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences PRE13A-EC

Meridional wind

Zonal means

ECMWF	PRE13A
Anl	Anl
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Errors

ECMWF	PRE13A
1 day	1 day
3 day	3 day
5 day	5 day
10 day	10 day

Differences in Zonal mean Meridional Wind PRE13A-EC

Area Means

Standard Deviation of Vorticity

Zonal Mean

*Analyses*	EC	*PRE13A*	*PRE13A-EC*
*1 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*
*3 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*
*5 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*
*10 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*

20S-20N

*Analyses*	EC	*PRE13A*	*PRE13A-EC*
*1 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*
*3 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*
*5 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*
*10 day*	EC	*PRE13A*	*PRE13A-EC*	*EC error*	*PRE13A error*

Horizontal Divergence

Analyses

Zonal mean	EC	PRE13A	PRE13A-EC
7.5N	EC	PRE13A	PRE13A-EC
7.5S	EC	PRE13A	PRE13A-EC
22.5N	EC	PRE13A	PRE13A-EC
150	EC	PRE13A	PRE13A-EC
200	EC	PRE13A	PRE13A-EC
925	EC	PRE13A	PRE13A-EC
1000	EC	PRE13A	PRE13A-EC

Relative Humidity

Zonal means

ECMWF	PRE13A	PRE13A-EC
Anl	Anl	Anl

1000 hPa

950 hPa

900 hPa

850 hPa

800 hPa

700 hPa

300 hPa

200 hPa

100 hPa