[MITgcm-devel] diagnostics: fixing variances

[Ed Hill]

Hi folks,

Heres an updated version of the script that shows the problem exists
regardless of the magnitude of the variables!

Its a function of at least three things: 

 (1) the ratio between the standard deviation of the variables 
     and their means,
 (2) the fact that we do not have a priori knowledge of the 
     means (or we could compute stddev in a way that much 
     handles finite precision), and 
 (3) the number of significant figures in our finite-precision 
     numerics (REAL*4 and REAL*8).

Ed

-- 
Edward H. Hill III, PhD
office:  MIT Dept. of EAPS;  Rm 54-1424;  77 Massachusetts Ave.
             Cambridge, MA 02139-4307
emails:  eh3 at mit.edu                ed at eh3.com
URLs:    http://web.mit.edu/eh3/    http://eh3.com/
phone:   617-253-0098
fax:     617-253-4464
-------------- next part --------------
A non-text attachment was scrubbed...
Name: prec_demo.jpg
Type: image/jpeg
Size: 253455 bytes
Desc: not available
URL: <http://mitgcm.org/pipermail/mitgcm-devel/attachments/20050508/5fbb5956/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: prec_demo.m
Type: text/x-objcsrc
Size: 1113 bytes
Desc: not available
URL: <http://mitgcm.org/pipermail/mitgcm-devel/attachments/20050508/5fbb5956/attachment.bin>