The 2011 data provides greenhouse gas information from facilities in 41 source categories, including new data from 12 source categories that reported for the first time, such as petroleum and gas natural systems, industrial landfills, coal mines and others.
Featured by USGS, a member of the U.S. Global Change Research Program
While the iconic Haleakalā silversword plant made a strong recovery from early 20th-century threats, it has now entered a period of substantial climate-related decline. New research published this week warns that global warming may have severe consequences for the silversword in its native habitat.
The Haleakalā silversword (Argyroxyphium sandwicense macrocephalum) grows only on a single volcano summit in Hawaiʻi, yet it is viewed by 1–2 million visitors annually at Haleakalā National Park. Although the decline and extinction of other rare species with small ranges (and the accompanying loss of biodiversity) can easily go unobserved and unappreciated, the silversword’s high profile makes it a good example with which to educate the public about global climate change. Read more.
NASA's Goddard Institute for Space Studies (GISS) in New York, which monitors global surface temperatures on an ongoing basis, released an updated analysis today that compares temperatures around the globe in 2012 to the average global temperature from the mid-20th century. The comparison shows how Earth continues to experience warmer temperatures than several decades ago.
Featured by NOAA, a member of the U.S. Global Change Research Program
The latest State of the Climate National Overview report from the National Oceanic and Atmospheric Administration (NOAA) and NOAA's National Climatic Data Center reveals that 2012 was the United States’ warmest year on record by a wide margin. According to the report, the average temperature for the contiguous United States for 2012 was 55.3° Fahrenheit, which was 3.2° Fahrenheit above the twentieth-century average.