The NOAA says that 1998 was still the warmest year on record.
NASA says 1998 was the third warmest, after 2005 and 2007.
Why do they vary by quite a bit? Are they using different baselines? Different data stations? And how do these stations compare to other temp data sources?
...looking back, maybe it's just that my NOAA graph only seems to go up to 2001. I couldn't find a more up to date one though, anyone know?