Tag Archives: jean_s

The Hockey Stick and the Milankovitch Theory

Feb 3, 2010 – 6:18 AM

The 20th century warming counters a millennial-scale cooling trend which is consistent with long-term astronomical forcing. MBH99 According to the UMass researchers, the 1,000-year reconstruction reveals that temperatures dropped an average of 0.02 degrees Celsius per century prior to the 20th century. This trend is consistent with the “astronomical theory” of climate change, which considers […]

By Jean S | Posted in Jacoby, Mann PC1, MBH98, Noamer Treeline, Replication | Also tagged , , , | Comments (62)

Yet another Upside Down Mann out

Nov 27, 2009 – 4:52 AM

Science published today yet-another-Mann-et-al-reconstruction: Michael E. Mann, Zhihua Zhang, Scott Rutherford, Raymond S. Bradley, Malcolm K. Hughes, Drew Shindell, Caspar Ammann, Greg Faluvegi, and Fenbiao N: Global Signatures and Dynamical Origins of the Little Ice Age and Medieval Climate Anomaly, Science 326 (5957), 1256. [DOI: 10.1126/science.1177303]. Seems to me that Mann has re-discovered the Medieval […]

By Jean S | Posted in Mann et al 2009 | Also tagged , , , , | Comments (141)

Mike’s Nature trick

Nov 20, 2009 – 9:59 AM

So far one of the most circulated e-mails from the CRU hack is the following from Phil Jones to the original hockey stick authors – Michael Mann, Raymond Bradley, and Malcolm Hughes.

By Jean S | Posted in Briffa, climategate, Jones et al 1998, MBH98, Spot the Hockey Stick! | Also tagged | Comments (430)

Mann 2008 – Replication II

Mar 18, 2009 – 2:22 PM

Let’s continue Mann 2008 – Replication with EIV. To run regreclow.m and regrechigh.m you’ll need files climate, eofnumb, and proxyN, where N runs from 1 to 19. I’ve run prepinputforrecon.m with required folder structure (C:\holocene\s1\zuz10\work1\temann\ etc.) in my computer. After that I did run regrechigh.m in folder C:\holocene\s1\zuz10\work1\temann\zzrecon1209\nhnhscrihad\highf and regreclow.m in folder C:\holocene\s1\zuz10\work1\temann\zzrecon1209\nhnhscrihad\lowf The regem […]

By uc00 | Posted in Uncategorized | Also tagged , , , , | Comments (21)

Jean S on Rutherford et al 2005

Jul 10, 2006 – 1:48 PM

Jean S has sent the following longer contribution on Rutherford et al 2005. I always appreciate Jean S’s thoughtful comments (which is no secret to readers here). So enjoy. JeanS: Now since the review of Burger and Cubash [BC06 here after] put Rutherford (2005) [R05] back on the table, there is an issue to which […]

By Jean S | Posted in RegEM | Also tagged , , | Comments (46)