Tag Archives: bristlecones

More Mystery at Sheep Mountain

Jan 31, 2008 – 11:27 AM

The Sheep Mountain CA bristlecone site is the most important proxy in MBH and the MBH98 reconstruction actually doesn’t differ very much from the Sheep Mountain tree ring chronology (other than it ends in 1980 at pretty much the peak of the Sheep Mt chronology and doesn’t include the downtick in the 1980s.) Various efforts […]

By Stephen McIntyre | Posted in bristlecones, MBH98 | Also tagged , , | Comments (125)

Underwater in the Sierra Nevadas

Dec 6, 2006 – 5:09 PM

While we’re re-visiting bristlecones and foxtails, the Here are three interesting online articles, each of which discusses areas in the Sierra Nevada CA, which are now submerged, but where forests grew in the Medieval Warm Period. Many readers of this blog will have read articles about trees being disgorged from receding glaciers and it’s hard […]

By Stephen McIntyre | Posted in bristlecones, Medieval | Also tagged , , , | Comments (55)

North and NAS on Bristlecones

Sep 7, 2006 – 6:22 AM

BTW, I thought that the Chronicle colloquy was pretty interesting. I don’t usually get to ask people questions directly, so I appreciated that the Chronicle allowed questions through without Gavin Schmidt/realclimate censoring. Now that I think of it, the only other question that I’ve been able to ask a climate scientist directly was to Caspar […]

By Stephen McIntyre | Posted in bristlecones, NAS Panel | Also tagged , | Comments (43)

NAS Panel #2: Bristlecones

Jun 29, 2006 – 11:28 AM

Readers of this site are familiar with our concern over the use of bristlecones/foxtails in MBH98-99 and other multiproxy studies. The NAS Panel found in one place that "strip-bark samples" (which Graybill sought out in his bristlecone collections) should "not be used". They also reported that the MBH results were "strongly dependent" on "Great Basin […]

By Stephen McIntyre | Posted in General | Also tagged | Comments (53)

Bristlecones, Foxtails and Temperature

Jun 5, 2006 – 8:19 PM

The relationship of bristlecone/foxtails to gridcell temperature is something that I’ve discussed at length, but, surprisingly, I’ve never illustrated it at the blog. This is a type of relationship that, in some ways, is well suited to blogs. It’s simple to discuss; it’s important. It would be amply illustrated and discussed in business feasibility studies […]

By Stephen McIntyre | Posted in bristlecones, MBH98, Multiproxy Studies | Also tagged , | Comments (118)