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.
In association with the release of the Draft Third National Climate Assessment Report, John Holdren (Assistant to the President and Director of the White House Office of Science and Technology Policy) and Jane Lubchenco (Administrator of the National Oceanic and Atmopsheric Administration) published post on the White House blog about the draft report and the history of the NCA. Read the post here.
Today, the National Climate Assessment Development and Advisory Committee (NCADAC), the federal advisory committee for the National Climate Assessment, approved their draft of the Third National Climate Assessment Report for release for public comment. The draft report is available for download - both as a single document and by chapter at http://ncadac.globalchange.gov.
The public comment period for the report will run January 14 - April 12, 2013. All comments must be submitted via the online comment tool that will be available from http://ncadac.globalchange.gov beginning on January 14. The draft will be undergoing review by the National Research Council at the same time.
The draft report is a product of the NCADAC and is not a product of the federal government. The authors of the report will use the comments received during the public comment period to revise the report before submitting it to the government for consideration.