Peter Sinclair’s latest video in his This Is Not Cool series for the Yale Forum on Climate Change & the Media looks at why global warming — the steady accumulation of energy in the climate system — continues, despite media buying into the denier-promulgated myth of a hiatus, pause or slowdown in warming. Sinclair’s compiled interviews with real experts — Josh Willis, Kevin Trenberth, and James Hansen among them — and they explain what’s going on in a clear and compelling way. The next time someone claims that warming’s stopped, point them at this video.
Here’s a superb video from the Department of Education at the American Museum of Natural History, showing how NZ and US scientists are examining the precise timing of glacier advances and retreats in the Mackenzie country around Lake Pukaki using surface exposure dating. Like all good geologists they use big hammers and small explosives to shatter rocks in order to sample “cosmogenic” Be-10 — a beryllium isotope formed when cosmic rays hit quartz in newly exposed rocks. See here for more on recent surface exposure dating work in the Pukaki area. Hat tip to Climate Crocks for spotting the video.
Peter Sinclair’s recent Climate Denial Crock of the Week is fascinating viewing. He has unearthed a video of a talk given by climate scientist Mike McCracken thirty years ago and asks him in a recent interview what he would say differently today.
Very little has changed. The younger McCracken:
“CO2 probably has been very high in past geologic terms but certainly not in past historic times, and so we’re really doing a giant experiment and the question is what is the outcome going to be?”