[AccessD] OT: Hockey Stick programs and global warming on Canada Day

MartyConnelly martyconnelly at shaw.ca
Fri Jul 1 15:59:56 CDT 2005


Does your code measure up to this standard. This is just a quick peek at 
the code and the stats used.
Not a argument for or against each position.

 This is part of the analysis, that forms the basis for
billions of dollars being spent on Global Warming. Golub's CSVD routine 
is kind of old and if I remember right machine dependant. SVD routines
(Singular Value Decomposition) are a method of solving linear least 
squares problems.

The argument
http://en.wikipedia.org/wiki/Temperature_record_of_the_past_1000_years

Ok, now here is some of the original code from Mann's site, about 400 
lines of text.
Note the use of goto's and other achronisms. This isn't a plug for use 
of IDL language.

ftp://holocene.evsc.virginia.edu/pub/MBH98/TREE/ITRDB/NOAMER/pca-noamer.f

what routine does
remove the 1902-1980 mean
calc the SD over this period
divide the whole series by this SD, point by point
remove the linear trend from the new 1902-1980 series
compute the SD again for 1902-1980 of the detrended data
divide the whole series by this SD.


Be aware that not all the software code and data has been fully released
so their is much bickering involved.

More info:

William Connolley's view Anatartic Climate Modeler
http://groups-beta.google.com/group/sci.environment/msg/9a3673c6a0d64c1f?hl=en&lr=&c2coff=1&rnum=5

Answer to natures rejection of McKitrick and McIntyre rejection of 
Mann's data and Analysis

http://www.uoguelph.ca/~rmckitri/research/fallupdate04/update.fall04.html

Another blog
http://www.j-bradford-delong.net/movable_type/2004-2_archives/000406.html

C SVD routines from "Numerical Recipes in C"  book online can be had here
http://www.library.cornell.edu/nr/cbookcpdf.html


C SVD routines from "Numerical Recipes in C"  book online can be had here
http://www.library.cornell.edu/nr/cbookcpdf.html


-- 
Marty Connelly
Victoria, B.C.
Canada






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