While the Northern Hemisphere’s snow cover on land ranked as the 13th most extensive on record in 2013, snow cover extent at the end of the cold season has dropped by 19.9 percent per decade since 1979 relative to the 1981-2010 average.
Last summer, climate conditions were primed to deliver an above-average—possibly very active—hurricane season in the Atlantic. And then...? The 2013 Atlantic Hurricane season produced the fewest number of hurricanes since 1982. What happened?
Maps of precipitation deficits through January show California mountain areas generally have greater deficits than lower elevations, and Southern California with larger deficits than areas to the north. The drought outlook for February remained grim.
The most populated state in the country is facing what may be its worst drought in a century of record-keeping. On January 20, the governor of California declared a state of emergency, urging everyone to begin conserving water.
From record-low Arctic sea ice to the highest global sea level of the modern record, the 2012 State of the Climate report provides a complete rundown on the state of Earth's climate and how it is changing.
The extent of snow-covered ground in the Northern Hemisphere at the end of the cold season (June) hit a record low. Annual average snow cover extent has not exceeded the long-term average even once since 2003. Between 1979 and 2011, the snow cover in June is declining even faster than the end-of-summer Arctic sea ice extent.