Re: SAVE in EOF analysis

[Boyin Huang <huang_boyin@xxxxxxxxx>]

Hi, ferreters:

I have two questions

(1) We use the following commands to calculate EOF
space distribution and its time magnitude. Does this
mean that the caculation for eof_space, eof_st, and
eof_tfunc is compeletely separated? I would simply
think that the time function and statistics should
have already stored somewhere, when eof_space is
calculated (about an hour). But it looks not, since
"LET eof_st = eof_stat" also takes an hour to finish.

LET eof_xy =
eof_space(eof_ave[X=($x1):($x2),Y=($y1):($y2)], 0.5)
LET eof_st = eof_stat
(eof_ave[X=($x1):($x2),Y=($y1):($y2)], 0.5)
LET eof_tm =
eof_tfunc(eof_ave[X=($x1):($x2),Y=($y1):($y2)], 0.5)

 SAVE/CLOBBER/FILE="eof_space.cdf" eof_xy
 SAVE/CLOBBER/FILE="eof_tfunc.cdf" eof_tm[i=1:`nout`]
 SAVE/CLOBBER/FILE="eof_stats.cdf" eof_st

(2) Using ncdump command, I found that the number of
EOFs are not consistent: 4550 or 3687? Although we are
interested in first several EOFs, the question is: are
they consistent in space and time domain when we talk
about EOF-n?

netcdf eof_stats {
dimensions:
        XAX1_4550 = 4550 ;  
        YAX1_3 = 3 ;


netcdf eof_space {
dimensions:
        LONGITUDE66_156 = 91 ;
        LATITUDE18_67 = 50 ;
        LATITUDE18_67edges = 51 ;
        TAX1_4550 = UNLIMITED ; // (4550 currently)

netcdf eof_tfunc {
dimensions:
        XAX1_3687 = 3687 ;
        TYEAR = UNLIMITED ; // (10 currently)


=====
Boyin Huang
The Center for Research on the Changing Earth System (CRCES)
10211 Wincopin Circle, Suite 240
Columbia, Maryland 21044
Tel. 410-992-5300/819 (O), 410-737-4557(H)
Fax. 410-992-5944, Email. byh@crces.org
http://byh.crces.org

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