By 'Global Warming', Gore and the others weren't referring to any cyclical behavior, but proposing a change that was out of all historical norms, and had a positive feedback loop through anthropogenic C02 that would burn up the world.
The warming from 1970 to 2000 has been matched in the historical record for rate and duration, and there is no positive feedback loop as measured by the last 30 years of satellite data.
So on the short scales (day, year, decade, century), you might measure warming and cooling, but that's not what Gore was talking about.
And if you believe that it's warmed in the last 10 years, you are wrong.