The best models that predict surface temperatures that I've seen have to do with the deep sea ocean conveyors (https://en.wikipedia.org/wiki/Thermohaline_circul

The best models that predict surface temperatures that I've seen have to do with the deep sea ocean conveyors (https://en.wikipedia.org/wiki/Thermohaline_circulation https://en.wikipedia.org/wiki/Thermohaline_circulation). There's something like 3 major currents with periods measured in years, and their phase greatly influences global temperatures. One of the current theories that I find very convincing is that ice ages happen when one or more of these currents gets disrupted. If the heat from the equator stopped making it to the poles, you could start seeing massive glaciation start to happen. http://science.nasa.gov/science-news/science-at-nasa/2004/05mar_arctic/ http://science.nasa.gov/science-news/science-at-nasa/2004/05...