(Statement A) "The stations were selected on the basis of station history: we chose those with few, if any, changes in instrumentation, location or observation times." [Jones et al.]
(Statement B) "They were chosen based on station histories: selected stations have relatively few, if any, changes in instrumentation, location, or observation times…." [Wang et al.]"
Failure to provide data together with evidence conflicting the statements has led to a formal allegation of fraud supplemented with cover-up by investigating bodies.
The full monty -
This is not the first time data requests have met with resistance.
Requests for the manufacture data for the infamous hockey stick were denied by head honcho, Prof. Mann, an IPCC lead author.
Prof. Phil Jones, head of the Climatic Research Unit, when met with a request for data on one occasion claimed incompetence as his excuse for not providing them.
On another occasion; "We have 25 or so years invested in the work. Why should I make the data available to you, when your aim is to try and find something wrong with it."
There is another effort ongoing, the outcome is awaited;
New addition. The perpetrators of the "Antarctic warming" nonsense have apparently elected to join the ranks of the data withholders.
These are just instances that have come to light. How much more pseudo science supporting the AGW myth remains concealed by scientists and their collaborators?