Category Archives: Replication

Replication #3: What if a step is not replicable?

Feb 20, 2005 – 8:36 AM

This is a short discussion of the issues arising when a calculation step in a multi-step study cannot be replicated.

By Stephen McIntyre | Also posted in MBH98 | Comments (1)

Replication #2: Selection of Gridcells

Feb 19, 2005 – 9:22 PM

The Corrigendum SI stated that: MBH98 made use of all nearly continuous monthly gridpoint surface temperature records (no single gap greater than 24 months, and no more than 10 years of total missing data. I checked these criteria against the temperature dataset archived at the Corrigendum SI and found that 242 out of 1082 gridcells […]

By Stephen McIntyre | Comments (7)

Replication #1: MBH98 Temperature Dataset

Feb 19, 2005 – 8:39 PM

I have a considerable inventory of material on replication issues pertaining to MBH98, which does not really fit into academic journal formats. I’ll probably do about 25 of these notes, which may interest a few people and will illustrate the obstacles to replicating MBH98 without a close examination of source code. I’ll start first with […]

By Stephen McIntyre | Comments (1)

A scorecard on MM03

Feb 4, 2005 – 9:49 PM

Our analysis in our two recent articles, in GRL and E&E, has moved well beyond the points made in MM03, while building on them. Mann has recently claimed that all of our claims in MM03 have been discredited. I thought it would be interesting to look back at the claims in MM03 and see how […]

By Stephen McIntyre | Also posted in MBH98 | Comments (18)