Global temperature versus current carbon dioxide levels
One of the persistent issues bedeviling public understanding of global warming is the apparent disconnect between CO 2 levels and global temperatures since 1998. Skeptics claim that warming has slowed since 1998 while CO 2 has risen at an increasing rate. At first glance, they might have a point—but only at first glance. Here is the 12-month running average of Mauna Loa CO 2 measurements and GISS surface temperatures: