Search Results for: hockey stick

US East Coast Sea Level Rise: An Adjustocene Hockey Stick

In 2011, Andy Revkin wrote an article (archive) entitled “Straight Talk on Rising Seas in a Warming World” (among other articles on the topic), in which he optimistically sought guidance on the topic from a then recent study of U.S. East Coast sea level coauthored by Mann (Kemp et al, 2011).  Joshua Willis told Revkin “that, […]

The Ocean2K “Hockey Stick”

The long-awaited (and long overdue) PAGES2K synthesis of 57 high-resolution ocean sediment series (OCEAN2K) was published a couple of weeks ago (see here here). Co-author Michael Evans’ announcement made the results sound like the latest and perhaps most dramatic Hockey Stick yet: Today, the Earth is warming about 20 times faster than it cooled during the past 1,800 […]

Brandon’s ebook on the Hockey Stick

  A couple of years ago, Brandon Shollenberger  wrote up a lengthy review of Mann’s Hockey Stick Wars at Lucia’s.  Brandon has fleshed out his review in an ebook here. Brandon summarized the book as follows: “there is a great deal of misinformation, and even disinformation, polluting the airwaves. One prime example was world renowned […]

t-Statistics and the “Hockey Stick Index”

In MM05,  we quantified the “hockeystick-ness” of a series as the difference between the 1902-1980 mean (the “short centering” period of Mannian principal components) and the overall mean (1400-1980), divided by the standard deviation – a measure that we termed its “Hockey Stick Index (HSI)”.  The histograms of its distribution for 10,000 simulated networks (shown in […]

Steig’s “Hockey Stick”

I’m writing a response to Gavin Schmidt’s rant about Yamal, which I should finish by tomorrow. Schmidt’s rant does not refute anything in my Yamal post. Indeed, Schmidt barely touches on the actual content of my post. Most of his post has nothing to do with Yamal. In the present post, I’ll deal with the […]

The Hockey Stick in Art and Literature

One of Josh’s finest graphic flourishes: (h/t Bishop Hill and WUWT)

The Boulton Hockey Stick

Following (below left) is the Hockey Stick diagram endorsed by Geoffrey Boulton, General Secretary of the Royal Society of Edinburgh, in their December 2009 (post-Climategate) Policy Advice statement Climate Change and the U.N Copenhagen Summit here. On the right is a confirmation plot from data archived in late 2009 and February 2010 by Boulton’s associate […]

The Hockey Stick and the Milankovitch Theory

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 […]

The "Climategate" Hockey Stick

If anyone’s keeping a tab on “climategate” hits, they have a very Hockey-Stick shaped pattern. A couple of days ago, someone observed that “climategate” hits on Google hit the 10 million mark. They’ve now hit 10.8 million. [Note: I got 94.5 million a couple of minutes ago. Dunno why I got a different answer when […]

Briffa on another Mann Hockey Stick

Like many other people, I’m gradually digesting the CRU letters. Obviously I’m going to comment on them but I’m going to start a little slowly. Here’s one that’s a little fun,