Original: The IPCC published its first assessment report in 1990 , a supplementary report in 1992 , a second assessment report ( SAR ) in 1995 , and a third assessment report ( TAR ) in 2001 .
Simplified: IPCC Reports The first IPCC report was published in 1990 . The second report was published in 1995 , the third was published in 2001 , and a fourth in 2007 .