clip_image004.jpg

The Geography of USCRN Average Air Temperature Trends during the 2004-2014 Decade over the Contiguous United States

Guest essay by Samuel I Outcalt The USCRN monthly average air temperature records were searched for continuous records covering the 2004 to 2014 decade over the contiguous United States. The average values were selected as these averages represented the average of several sensors. The records represent mid-month averages so a simple interpolation algorithm was used…

clip_image004.jpg

The Met Office UK: Our Heros

Guest Essay by Kip Hansen   Those following the various versions of the “2014 was the warmest year on record” story may have missed what I consider to be the most important point. The UK’s Met Office (officially the Meteorological Office until 2000) is the national weather service for the United Kingdom. Its Hadley Centre…

JANUARY_2015

Global Temperature Report: January 2015 – not much change from December

From University of Alabama, Hunstville: Northern non-tropics see warmest January Global climate trend since Nov. 16, 1978: +0.14 C per decade January temperatures (preliminary) Global composite temp.: +0.35 C (about 0.63 degrees Fahrenheit) above 30-year average for January. Northern Hemisphere: +0.55 C (about 0.99 degrees Fahrenheit) above 30-year average for January. Southern Hemisphere: +0.15 C…

Note the step change. At about 1960, the uncertainty levels plummet, meaning BEST is claiming we became more than twice as certain of our temperature estimates practically overnight.

BEST practices step uncertainty levels in their climate data

Brandon Shollenberger writes in with this little gem: I thought you might be interested in a couple posts I wrote discussing some odd problems with the BEST temperature record.  You can find them here: http://www.hi-izuru.org/wp_blog/2015/01/how-best-overestimates-its-certainty-part-2/ http://www.hi-izuru.org/wp_blog/2015/01/how-best-overestimates-its-certainty-part-1/ But I’ll give an overview.  BEST calculated its uncertainty levels by removing 1/8th of its data and rerunning its…

clip_image008.png

Improving Climate Literacy: ‘Temperature Homogenization Activity’

Guest essay by Jim Steele In 2012 the National Academies of Science published A Framework For K-12 Science Education Practices, Crosscutting Concepts, and Core Ideas. Although the framework often characterizes climate change as a negative and disruptive phenomenon, the framework clearly states students need to understand all the factors causing climate change writing, “Natural factors…