Gavin makes the 1940’s blip disappear in the US, by simply changing the data and inverting the blip. The graph below shows the changes he has made since 2001.
From: Tom Wigley <email@example.com>
To: Phil Jones <firstname.lastname@example.org>
Date: Sun, 27 Sep 2009 23:25:38 -0600
Cc: Ben Santer <email@example.com>
It would be good to remove at least part of the 1940s blip, but we are still left with “why the blip”.