climate change 101

Please excuse my delinquent posting. I'm taking a class at the University of Alaska Fairbanks on climate and climate change, and last week was the final exam. I think I might have tanked it despite studying a fair amount. I completely missed the first question by confusing dynamical feedbacks, which deal with the transport of energy over latitudes, and biogeochemical feedbacks, which highlight the way biology can effect climatic changes.
Tuesday I have to give a half-hour presentation, which I've chosen to do on the Pacific Decadal Oscillation. The PDO is a pattern of atmospheric changes something like El Nino/La Nina but on a longer time scale and located primarily in the North Pacific rather than the tropical Pacific. It's important for Alaska because it caused at least some of a big jump in air temperatures in 1976, and confuses the question of how much the state has warmed in the last 50 or 100 years because of anthropogenic climate change. Some ignore the PDO as say, Look! Alaska is 4 degrees warmer now, while others point to the PDO and say, No sweat, it'll get cold again.
Today I had a scattered day of reporting that included interviewing an Alaskan environmental leader on Gov. Palin's environmental positions, blogging about the natural gas pipeline, covering a Ron Paul rally, doing a short profile of a woman from southern California, typing up the police report, and interviewing the brother of someone who was just killed by a drunk driver in Anchorage.
In my spare time, I've been cleaning my caribou skull to make a European mount.