Woods Hole Oceanographic Institution

The WHOI Ocean and Climate Change Institute has published a collection of reports are quite interesting reading. Most of the studies and debates on potential climate change have focused on the ongoing buildup of industrial greenhouse gases in the atmosphere and a gradual increase in global temperatures. But recent and rapidly advancing evidence demonstrates that Earth's climate repeatedly has shifted dramatically and in time spans as short as a decade. And abrupt climate change may be more likely in the future.
See: The Abrupt Climate Change Reports.