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

cam5_F2000_var. Anomalies are relative to the 0001-0020 mean.
1-2
3-4
5-6
7-8
9-10
11-12
13-14
15-16

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.
cam5_F2000_var
NCEP Reanalysis
CAM3 Amip (T85)

Histograms

Histograms of daily precipitation rate for the Tropics and NH Extratropics.
cam5_F2000_var
NCEP Reanalysis
CAM3 Amip (T85)

EOF analysis

EOF analysis 30S to 30N (lat-lon map, time series)
PRECT summer cam5_F2000_var PRECT summer cam5_F2000_var
PRECT summer TRIMM PRECT summer TRIMM
PRECT winter cam5_F2000_var PRECT winter cam5_F2000_var
PRECT winter TRIMM PRECT winter TRIMM
FLUT summer cam5_F2000_var FLUT summer cam5_F2000_var
FLUT summer ERA FLUT summer ERA
FLUT winter cam5_F2000_var FLUT winter cam5_F2000_var
FLUT winter ERA FLUT winter ERA
U850 summer cam5_F2000_var U850 summer cam5_F2000_var
U850 summer ERA U850 summer ERA
U850 winter cam5_F2000_var U850 winter cam5_F2000_var
U850 winter ERA U850 winter ERA
U200 summer cam5_F2000_var U200 summer cam5_F2000_var
U200 summer ERA U200 summer ERA
U200 winter cam5_F2000_var U200 winter cam5_F2000_var
U200 winter ERA U200 winter ERA
V200 summer cam5_F2000_var V200 summer cam5_F2000_var
V200 summer ERA V200 summer ERA
V200 winter cam5_F2000_var V200 winter cam5_F2000_var
V200 winter ERA V200 winter ERA

lag-cross-correlations

The climatological cross correlation plots (cam5_F2000_var vs obs)
lag lat lon summer cam5_F2000_var lag lat lon summer ERA
lag lat lon winter cam5_F2000_var lag lat lon winter ERA
lag lat lon annual cam5_F2000_var lag lat lon annual ERA

wavenumber - frequency spectra

The wavenumber - frequency spectra plots (cam5_F2000_var vs obs)
PRECT summer cam5_F2000_var PRECT summer TRIMM
PRECT winter cam5_F2000_var PRECT winter TRIMM
FLUT summer cam5_F2000_var FLUT summer ERA
FLUT winter cam5_F2000_var FLUT winter ERA
U850 summer cam5_F2000_var U850 summer ERA
U850 winter cam5_F2000_var U850 winter ERA
V850 summer cam5_F2000_var V850 summer ERA
V850 winter cam5_F2000_var V850 winter ERA
U200 summer cam5_F2000_var U200 summer ERA
U200 winter cam5_F2000_var U200 winter ERA
V200 summer cam5_F2000_var V200 summer ERA
V200 winter cam5_F2000_var V200 winter ERA

composite life cycles

The composite life cycles (cam5_F2000_var vs obs)
summer cam5_F2000_var summer ERA
winter cam5_F2000_var winter ERA