Electronic Supplement to Wahl and Ammann
Climatic Change (2007)
Reference:
Wahl E.R. & C.M. Ammann, 2007:
Robustness of the Mann, Bradley, Hughes reconstruction of Northern Hemisphere surface temperatures: Examination of criticisms based on the nature and processing of proxy climate evidence.
Climatic Change, 85:33-69 (DOI 10.1007/s10584-006-9105-7)
Published: © 2007, Climatic Change
See also: Ammann & Wahl, Climatic Change (same issue)
1. Electronic Supplementary Table ES1
Table ES1 [click on thumbnail for full table]: Complete Summary statistic data for all components of Scenarios 5 and 6 (all numbers of proxy PCs from N-American ITRDB tree ring chronologies used in the Wahl-Ammann analysis).
2. Wahl-Ammann code for MBH-type climate reconstruction
Brief description of the code / how-to-run
NOTE:Our code as posted is to accompany the paper.
Please refer to Wahl-Ammann (2007) for a general description. We want the users also to be aware of two important simplifications:
- The instrumental data is decomposed on the annually averaged level rather than on the monthly as in MBH98.
- The weights of the individual proxies have been dropped.
The code is run from a master file that then calls a control file (containing all necessary instrumental and proxy data file settings) as well as the actual R code of the reconstruction (RFunctions-File). This code was developed in a UNIX (MAC OS-X) environment, so to run it on WINDOWS, some small changes have to be done to replace system-level commands.
Code and Data tar-file
Last modified: Mon Jul 7 21:27:07 MDT 2008