Across the globe, changes in salinity over time generally match changes in precipitation: places where rainfall declines become saltier, while places where rainfall increases become fresher. Where did saltiness change over the past decade?
In October 2003, a little-known think tank in the Department of Defense quietly released a report warning that climate change could happen so suddenly it could pose a major threat to our country's national security. Why was the Pentagon worried about abrupt climate change? Because new evidence from Greenland showed it had happened before.
Guest blogger Marybeth Arcodia explains her latest research into how the Madden-Julian Oscillation and ENSO sometimes enhance each other's influence on U.S. precipitation and other times cancel each other out.