hide the decline

The Original Hide-the-Decline

In a twitter exchange among Jean S, Ronan Connolley and Tim Osborn, Ronan drew attention to an early spaghetti graph in a comment on MBH98 published by Phil Jones in Science on the day after (Apr 24, 1998) publication of Mann et al 1998. The Briffa reconstruction is in purple below. Like IPCC 2001, it hides the decline in the Briffa reconstruction (here a 1998 version) by deleting late 20th century values – here after 1950.
jones_comment-on=mbh98