... so they used CRU data... 
Pajamas Media Climategate Stunner: NASA Heads Knew NASA Data Was Poor, Then Used Data from CRU
Here is one of the emails...
http://pajamasmedia.com/files/2010/03/GISS-says-CRU-Better0001.pdf
How much more proof is needed that AGW is a massive hoax?

Pajamas Media Climategate Stunner: NASA Heads Knew NASA Data Was Poor, Then Used Data from CRU
Email messages obtained by the Competitive Enterprise Institute via a Freedom of Information Act request reveal that the climate dataset of NASA’s Goddard Institute for Space Studies (GISS) was considered — by the top climate scientists within NASA itself — to be inferior to the data maintained by the University of East Anglia Climate Research Unit (CRU).
The NASA scientists also felt that NASA GISS data was inferior to the National Climate Data Center Global Historical Climate Network (NCDC GHCN) database.
These emails, obtained by Christopher Horner, also show that the NASA GISS dataset was not independent of CRU data.
Further, all of this information regarding the accuracy and independence of NASA GISS data was directly communicated to a reporter from USA Today in August 2007.
The reporter never published it.
So much for the talking point that NASA data is independant from the manipulated Hadley data.Two implications of these emails: The data to which Phil Jones referred to as “independent” was not — it was being “corrected” and reused among various climate science groups, and the independence of the results was no longer assured; and the NASA GISS data was of lower quality than Jones’ embattled CRU data.
The NCDC GHCN dataset mentioned in the Ruedy email has also been called into question by Joe D’Aleo and Anthony Watts. D’Aleo and Watts showed in a January 2010 report that changes in available measurement sites and the selection criteria involved in “homogenizing” the GHCN climate data raised serious questions about the usefulness of that dataset as well.
These three datasets — from NASA GISS, NCDC GHCN, and CRU — are the basis of essentially all climate study supporting anthropogenic global warming.
Here is one of the emails...
http://pajamasmedia.com/files/2010/03/GISS-says-CRU-Better0001.pdf
How much more proof is needed that AGW is a massive hoax?
