AMWG Variability Test Plots

AMWG Variability Diagnostics for Daily Data

Intraseasonal Variability

Daily 200 hPa velocity potential anomalies computed and then averaged
over 5S-5N, 20-70 day bandpass filter then applied. Hovmöller plots.
Bandpass filter response plot
f09ZMtest. Anomalies are relative to the 0001-0005 mean.

1-2
3-4

Anomalies computed relative to the time period mean.

NCEP Reanalysis CAM3 Amip (T85)
1981-1982 1981-1982
1983-1984 1983-1984
1985-1986 1985-1986
1987-1988 1987-1988
1989-1990 1989-1990
1991-1992 1991-1992
1993-1994 1993-1994
1995-1996

1997-1998

1999-2000

Madden-Julian Oscillation
Time series of daily 200 hPa zonal wind averaged over 10N-10S.
200 hPa zonal wind bandpass filtered for 20-100 day period.
MJO Index defined as the running variance of the bandpass filtered data.

f09ZMtest
NCEP Reanalysis
CAM3 Amip (T85)

Histograms
Histograms of daily precipitation rate for the Tropics and NH Extratropics.

f09ZMtest
NCEP Reanalysis
CAM3 Amip (T85)

EOF analysis
EOF analysis 30S to 30N (lat-lon map, time series)

PRECT summer f09ZMtest PRECT summer f09ZMtest
PRECT summer TRMM PRECT summer TRMM
PRECT winter f09ZMtest PRECT winter f09ZMtest
PRECT winter TRMM PRECT winter TRMM
FLUT summer f09ZMtest FLUT summer f09ZMtest
FLUT summer ERA FLUT summer ERA
FLUT winter f09ZMtest FLUT winter f09ZMtest
FLUT winter ERA FLUT winter ERA
U850 summer f09ZMtest U850 summer f09ZMtest
U850 summer ERA U850 summer ERA
U850 winter f09ZMtest U850 winter f09ZMtest
U850 winter ERA U850 winter ERA
U200 summer f09ZMtest U200 summer f09ZMtest
U200 summer ERA U200 summer ERA
U200 winter f09ZMtest U200 winter f09ZMtest
U200 winter ERA U200 winter ERA
V200 summer f09ZMtest V200 summer f09ZMtest
V200 summer ERA V200 summer ERA
V200 winter f09ZMtest V200 winter f09ZMtest
V200 winter ERA V200 winter ERA

lag-cross-correlations
The climatological cross correlation plots (f09ZMtest vs obs)

lag lat lon summer f09ZMtest lag lat lon summer ERA
lag lat lon winter f09ZMtest lag lat lon winter ERA
lag lat lon annual f09ZMtest lag lat lon annual ERA

wavenumber - frequency spectra
The wavenumber - frequency spectra plots (f09ZMtest vs obs)

PRECT summer f09ZMtest PRECT summer TRMM
PRECT winter f09ZMtest PRECT winter TRMM
FLUT summer f09ZMtest FLUT summer ERA
FLUT winter f09ZMtest FLUT winter ERA
U850 summer f09ZMtest U850 summer ERA
U850 winter f09ZMtest U850 winter ERA
V850 summer f09ZMtest V850 summer ERA
V850 winter f09ZMtest V850 winter ERA
U200 summer f09ZMtest U200 summer ERA
U200 winter f09ZMtest U200 winter ERA
V200 summer f09ZMtest V200 summer ERA
V200 winter f09ZMtest V200 winter ERA

composite life cycles
The composite life cycles (f09ZMtest vs obs)

summer f09ZMtest summer ERA
winter f09ZMtest winter ERA

NCEP Reanalysis	CAM3 Amip (T85)
1981-1982	1981-1982
1983-1984	1983-1984
1985-1986	1985-1986
1987-1988	1987-1988
1989-1990	1989-1990
1991-1992	1991-1992
1993-1994	1993-1994
1995-1996
1997-1998
1999-2000

PRECT summer f09ZMtest	PRECT summer f09ZMtest
PRECT summer TRMM	PRECT summer TRMM
PRECT winter f09ZMtest	PRECT winter f09ZMtest
PRECT winter TRMM	PRECT winter TRMM
FLUT summer f09ZMtest	FLUT summer f09ZMtest
FLUT summer ERA	FLUT summer ERA
FLUT winter f09ZMtest	FLUT winter f09ZMtest
FLUT winter ERA	FLUT winter ERA
U850 summer f09ZMtest	U850 summer f09ZMtest
U850 summer ERA	U850 summer ERA
U850 winter f09ZMtest	U850 winter f09ZMtest
U850 winter ERA	U850 winter ERA
U200 summer f09ZMtest	U200 summer f09ZMtest
U200 summer ERA	U200 summer ERA
U200 winter f09ZMtest	U200 winter f09ZMtest
U200 winter ERA	U200 winter ERA
V200 summer f09ZMtest	V200 summer f09ZMtest
V200 summer ERA	V200 summer ERA
V200 winter f09ZMtest	V200 winter f09ZMtest
V200 winter ERA	V200 winter ERA

lag lat lon summer f09ZMtest	lag lat lon summer ERA
lag lat lon winter f09ZMtest	lag lat lon winter ERA
lag lat lon annual f09ZMtest	lag lat lon annual ERA