The average global temperature for July 2012 was more than 1° Fahrenheit above the 20th-century average, making it the fourth warmest July since record keeping began in 1880
News & Features
July 2012 wasn’t just the hottest July on record, it was the hottest month ever recorded for the contiguous United States since records began in 1895.
A series of unusually strong, long-lasting high pressure systems has parked over Greenland this summer. As many a weather forecaster has explained, high pressure generally leads to calm winds and sunny skies, both of which boost temperatures during the all-day sunshine of mid-summer at high latitudes. The conditions contributed to widespread melting of the ice sheet.
The current drought in the Southwest is not drier or longer-lasting than historic episodes documented in tree rings, but the current dry conditions stand out from the historical record by being hotter, according to Jonathan Overpeck, professor of geosciences at the University of Arizona.
The rainy season in India arrived late and delivered far less precipitation than usual in summer 2012, leading to severe drought across large parts of the country.
Since the mid-1950s, easy-to-serve, portion-controlled fish sticks have regularly found their way onto U.S. dinner tables and into school lunches. The past decade, however, has given fishermen and scientists a preview of the challenges they may face in keeping fish sticks on the menu as the planet gets warmer.
Jeff Privette describes the challenges of using satellites that people designed for observing changes in the weather from day to day to study changes in climate from decade to decade.
Deke Arndt, Chief of the National Climatic Data Center’s Climate Monitoring Branch, uses a football field to explain how NOAA creates its Climate Extremes Index.
Anthony Arguez, Normals Program Manager at NOAA’s National Climatic Data Center explains what scientists mean when they compare current weather conditions to “normal.”
In early July 2012, conditions throughout most of the contiguous 48 states ranged from abnormally dry to exceptional drought.