Geophysical Research Letters

La Nina caused global sea level drop

The 2011 La Niña was so strong that it caused global mean sea level to drop by 5 millimeters (0.2 inches), a new study shows. Since the early 1990s, sea level has been rising by about 3 millimeters (0.1 inches) per year, ...

Oct 29, 2012 4 / 5 (1) 2

Not-so-permanent permafrost

As much as 44 billion tons of nitrogen and 850 billion tons of carbon stored in arctic permafrost, or frozen ground, could be released into the environment as the region begins to thaw over the next century as a result of ...

Oct 29, 2012 4 / 5 (16) 15 | with audio podcast