Continuing my industrious typing from old IPCC reports, here is an extended excerpt from IPCC 1995 (SAR) dealing with climate change and variability. If you recall from IPCC 1990, it left an important oustanding question as to the impossibility of attributing the portion of present warming that it is due to human influences, when the […]
In 1992, the IPCC issued a Supplementary Report to the 1990 Assessment Report, which visited some of the multiproxy topics in chapter C. Again, I’ll provide some extended excerpts:
I’ve re-read section 7 of IPCC 1 [1990], which contains the graph used in the WSJ editorial. I highly recommend that everyone interested in this topic take a look at IPCC 1. First of all, here is a scan of Figure 7.1 together with the original caption. Original Caption: Figure 7.1. Schematic diagrams of global […]
I was browsing through some Jacoby articles for a different purpose and was reminded of the very interesting references to a relationship between high-latitude tree ring growth and southern exposure to the sun in two of his 1980s articles, which do not get mentioned any more once the GW campaign is on.
I’m now completely file compatible with Wahl and Ammann. In terms of my algorithm, I had to tweak the procedure for scaling RPCs a little, but the RPCs themselves were identical. It took some patience to reconcile differing data setups. I archived results from a complete run-through from their base case a couple of days […]
I’ve done a complete run using the WA basecase using the Windows-modified script that I archived a couple of days ago. From the output of this run, I extracted the results of the AD1400 step and made a stepwise splice, which I’ve saved here together with the MBH98 stepwise reconstruction. This may be of interest […]
As I discussed previously here, I had been able to quite accurately replicate Mann’s temperature principal components (the first 16 of which have been archived for a long time). Notwithstanding that these calculations can actually be replicated quite accurately, Wahl and Ammann calculated new reference temperature PCs using annual data on the basis that they […]
I’m progressing nicely with the process of parsing Ammann. The correlation between our AD1400 emulations of the MBH98 reconstructed PC1 is 0.9993201!
Wahl and Amman code is designed for Unix. I’ve done the tweaks for Windows, doing tweaks for both the masterfile (for their base case) and for the file of directories. There might be some simpler way of doing the tweaks, but this version doesn’t crash on my machine. This should transport OK to other machines. […]
Here are some first thoughts. So far I don’t see anything in W-A that affects any of our results. Indeed, I expect that W-A is going to be very positive for this debate, as the points at issue are going to be narrowed sufficiently closely that any people actually interested in the results (as opposed […]
Climate Audit 