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VII. Time Filtered History Tapes.


A. Description.

High pass monthly statistics have been computed by the CCM Processor (Buja, 1992) for 20 years of T42 Case 388 and are stored on the MSS as time average history save tapes (SAVHSTA). The filter was constructed by P. J. Rasch and is described in the Climate Modeling Section (1993).

1. Data is computed on the following vertical pressure levels:

1000, 950, 850, 700, 500, 300, 200, 100

2. The fields are: 'Z2', 'T', 'U', 'V', 'OMEGA', 'Q' .

3. The fields were then high-pass filtered as :
'Z2HIGH'
'THIGH'
'UHIGH'
'VHIGH'
'OMHIGH'
'QHIGH'


4. Low pass data for Z2 (Z2LOW) were obtained by taking the difference of the high pass and original.
(5.) Covariances of the filtered data were calculated as:
'ZZLOWP'
'ZZHIGHP'
'UUHIGHP'
'VVHIGHP'
'WWHIGHP'
'TTHIGHP'
'QQHIGHP'
'UTHIGHP'
'VTHIGHP'
'WTHIGHP'
'UZHIGHP'
'VZHIGHP'
'WZHIGHP'
'UQHIGHP'
'VQHIGHP'
'WQHIGHP'
'UVHIGHP'
'UWHIGHP'
'VWHIGHP'

B. Generation of Monthly Mean Statistics.

The following is a listing of the CCM Processor (Buja, 1992) Input Control Parameters (ICP) used to generate the filtered data and statistics for one example month, January of the 14th year for Case 388.

C
C INPUT CONTROL PARAMETERS - JOB STEP 1
C strip off the pressure level data
C
MSPFXIA='/CSM/ccm2/388/hist/'
TAPESA='h0486'
NINTAPA=6,4,1
C
DAYTYPA='DATE'
DAYSA=131224.0,140207.0,1.0
C
DELREL=0
C
FIELDA1='Z2','T','U','V','OMEGA','Q'
PRESSLEV=1000.,950.,850.,700.,500.,300.,200.,100.
C
BPHSTA='YES'
MSPFXOA='/CSM/ccm2/388/pres/01-14/'
SAVHSTA='pdat001'
NDYHSTA=16
NSVHSTA=3,3,1
C PWDHSTA='NOMS'
PWDHSTA='yyyyyy'
MSRTOA='1'
C
ENDOFDATA
C
C INPUT CONTROL PARAMETERS - JOB STEP 2
C high pass filter the field
C
MSPFXIA='/CSM/ccm2/388/pres/01-14/'
TAPESA='pdat001'
NINTAPA=3,3,1
TYPEA='PRESSURE'
C
DAYTYPA='DATE'
DAYSA=131224.0,140207.0,1.0
C
DELREL=0
C
TIMFILA='FULL','NONORM'
C this filter pass data from 2 to 8 days for daily data
TFWTSA = 0.3468767973E-02
, 0.9403571486E-02
, 0.2533843042E-02
,-0.4007498175E-01
,-0.1278730780
,-0.2193285972
, 0.7437409163
,-0.2193285972
,-0.1278730780
,-0.4007498175E-01
, 0.2533843042E-02
, 0.9403571486E-02
, 0.3468767973E-02
C
FIELDA1 ='Z2HIGH','THIGH','UHIGH','VHIGH'
,'OMHIGH','QHIGH'
C
DERFLD ='Z2HIGH',51,2,31,0,'Z2','.END'
,'THIGH',51,2,31,0,'T','.END'
,'UHIGH',51,2,31,0,'U','.END'
,'VHIGH',51,2,31,0,'V','.END'
,'OMHIGH',51,2,31,0,'OMEGA','.END'
,'QHIGH',51,2,31,0,'Q','.END'
C
BPHSTA='YES'
MSPFXOA='/CSM/ccm2/388/pres/01-14/'
SAVHSTA='hipd001'
NDYHSTA=16
NSVHSTA=3,3,1
C PWDHSTA='NOMS'
PWDHSTA='yyyyy'
MSRTOA='1'
C
ENDOFDATA
C
C INPUT CONTROL PARAMETERS - JOB STEP 3
C merge original and high pass
C
C high pass
MSPFXIA='/CSM/ccm2/388/pres/01-14/'
TAPESA='hipd001'
NINTAPA=3,3,1
TYPEA='PRESSURE'
C
DAYTYPA='DATE'
DAYSA=140102.0,140201.0,1.0
C
C original
MSPFXIB='/CSM/ccm2/388/pres/01-14/'
TAPESB='pdat001'
NINTAPB=3,3,1
TYPEB='PRESSURE'
C
DAYTYPB='DATE'
DAYSB=140102.0,140201.0,1.0
C
DELREL=0
C
FIELDA1='Z2HIGH','THIGH','UHIGH','VHIGH'
,'OMHIGH','QHIGH'
FIELDB1='Z2'
C
C merged stuff
ABMERGE='YES'
C
BPHSTC='YES'
MSPFXOC='/CSM/ccm2/388/pres/01-14/'
SAVHSTC='merg001'
NDYHSTC=16
NSVHSTC=2,3,1
C PWDHSTC='NOMS'
PWDHSTA='yyyyy'
MSRTOA='1'
C
ENDOFDATA
C
C INPUT CONTROL PARAMETERS - JOB STEP 4
C difference hi and original to get low pass data
C time average, and compute std-dev
C
MSPFXIA='/CSM/ccm2/388/pres/01-14/'
TAPESA='merg001'
NINTAPA=2,3,1
TYPEA='PRESSURE'
C
DAYTYPA='DATE'
DAYSA=140102.0,140201.0,1.0
C
TIMAVGA='YES'
C
DELREL=0
C
FIELDA1 ='Z2LOW','Z2HIGH','THIGH','UHIGH','VHIGH'
,'OMHIGH','QHIGH'
C
DERFLD ='Z2LOW',13,2,31,0,'Z2','Z2HIGH',':MINUS','.END'
C
CVFLDA1 ='Z2LOW','Z2LOW','ZZLOWP'
,'Z2HIGH','Z2HIGH','ZZHIGHP'
,'UHIGH','UHIGH','UUHIGHP'
,'VHIGH','VHIGH','VVHIGHP'
,'OMHIGH','OMHIGH','WWHIGHP'
,'THIGH','THIGH','TTHIGHP'
,'QHIGH','QHIGH','QQHIGHP'
,'UHIGH','THIGH','UTHIGHP'
,'VHIGH','THIGH','VTHIGHP'
,'OMHIGH','THIGH','WTHIGHP'
,'UHIGH','Z2HIGH','UZHIGHP'
,'VHIGH','Z2HIGH','VZHIGHP'
,'OMHIGH','Z2HIGH','WZHIGHP'
,'UHIGH','QHIGH','UQHIGHP'
,'VHIGH','QHIGH','VQHIGHP'
,'OMHIGH','QHIGH','WQHIGHP'
,'UHIGH','VHIGH','UVHIGHP'
,'UHIGH','OMHIGH','UWHIGHP'
,'VHIGH','OMHIGH','VWHIGHP'
C
BPHSTA ='YES'
SAVMHST ='TAV'
SAVHSTA ='/CSM/ccm2/388/filt/01-14'
PWDHSTA ='xxxxxx'
NDYHSTA =1
MSRTOA ='4095'
C
ENDOFDATA

C. T42 Statistics (Case 388).

The January and July averages of the statistics for Case 388 (T42) are available as a series of MSS datasets.

The generic pathname for Case 388 is /CSM/ccm2/388/filt/mm--yy

The specific pathnames are:

/CSM/ccm2/388/filt/mm--01
/CSM/ccm2/388/filt/mm--02
/CSM/ccm2/388/filt/mm--03
/CSM/ccm2/388/filt/mm--04
/CSM/ccm2/388/filt/mm--05
/CSM/ccm2/388/filt/mm--06
/CSM/ccm2/388/filt/mm--07
/CSM/ccm2/388/filt/mm--08
/CSM/ccm2/388/filt/mm--09
/CSM/ccm2/388/filt/mm--10
/CSM/ccm2/388/filt/mm--11
/CSM/ccm2/388/filt/mm--12
/CSM/ccm2/388/filt/mm--13
/CSM/ccm2/388/filt/mm--14
/CSM/ccm2/388/filt/mm--15
/CSM/ccm2/388/filt/mm--16
/CSM/ccm2/388/filt/mm--17
/CSM/ccm2/388/filt/mm--18
/CSM/ccm2/388/filt/mm--19
/CSM/ccm2/388/filt/mm--20
/CSM/ccm2/388/filt/mm--0120 ,

where mm = 01 and 07.

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