Hot Times in the Arctic
In late February, a large portion of the Arctic Ocean near the North Pole experienced an alarming string of extremely warm winter days, with the surface temperature exceeding 25 degrees Fahrenheit above normal.
These conditions capped nearly three months of unusually warm weather in a region that has seen temperatures rising over the past century as greenhouse gas concentrations (mostly carbon dioxide and methane) have increased in the atmosphere. At the same time, the extent of frozen seawater floating in the Arctic Ocean reached new lows in January and February in 40 years of satellite monitoring.
In recent years, the air at the Arctic Ocean surface during winter has warmed by over 5 degrees Fahrenheit above normal.… Seguir leyendo »