Major study interprets recent climate in light of past. February 20, 2014.
Last year the World Meteorological Organization released an important summary report on the world’s climate and how we make sense of it. The World’s Climate: 2001-2010 was unfortunately overshadowed by the publication of the Fifth Summary for Policymakers written by the UN’s Intergovernmental Panel on Climate Change. However, its conclusions are continuing to trickle through blogs and media outlets, as they shed new light on the past, present, and future of the world’s climate. More
Understanding Toronto's wild weather of 2013. January 15, 2014.
In Toronto, 2013 was a year of storms. The media storm kindled by the mayor’s chicanery was twice interrupted by meteorological storms that threatened lives and property on an unprecedented scale. On July 8th more than 100 mm of rain inundated the city in a matter of hours, triggering flash floods that caused more than $1 billion in property damage. Three days before Christmas, winter storm Gemini unleashed more freezing rain than was ever recorded in Toronto. More
Climate history is under attack in Canada. January 6, 2014.
In 2012 the Canadian government infamously announced changes to Library and Archives Canada that made it much harder for researchers to access their country’s documentary heritage. Rather than acquiring and maintaining a “comprehensive” collection, the LAC now aimed merely to gather a “representative” assembly of Canadian documents. Funding was slashed, employees were laid off, new acquisitions were paused, documents were sold, and resources were decentralized across Canada. More
Applying social learning to climate change research. December 20, 2013.
Most of the articles on this site have described the insights and methodologies of those who study climate change. Many conclude with a simple warning: to effectively address anthropogenic global warming, we need more inclusive ways to transform learning into practice. However, very few of these articles have explored how that can be done. With good reason: interdisciplinary work is never easy, and even harder is research that incorporates diverse perspectives from those closest to the effects of climate change. More
Did the "Little Ice Age" really exist? November 24, 2013.
For nearly a century, scholars have gradually reconstructed the existence of a so-called “Little Ice Age.” Their research is ongoing, but most now believe that average global temperatures declined by about 1°C between the thirteenth and the twelfth centuries. The extent, meteorological consequences, and timetable of cooling varied from region to region, but sorting through these statistical complexities still yields a clear downward trend in planetary temperatures. More
Study provides new context for recent Arctic warming. October 27, 2013.
At the beginning of the Holocene roughly 10,000 years ago, 9% more sunlight reached the Northern Hemisphere than today. Very gradually, less solar radiation warmed the far north, and regional temperatures started a lengthy decline. However, at the turn of the twentieth century that trend reversed sharply, and warming has accelerated since the 1970s. Recently published in the journal Geophysical Research Letters, a University of Colorado Boulder study by lead author Gifford Miller applies radiocarbon dating to new sources in a quest for more accurate reconstructions of these climatic shifts. More
Best of the Web: February 2014
Long-Range Forecasts. The Otter
Reconstructed Data Ranks 2013 Hotter Than 1998 And Erases Pause. Reporting Climate Science
Climate change: Unstable Atlantic deep ocean circulation may hasten "tipping point." ScienceDaily
Unprecedented trade wind strength is shifting global warming to the oceans, but for how much longer? The Guardian
Rotterdam's citizens gather in the snows of the Little Ice Age to observe the great comet of 1680. Lieven Verschuier, The Great Comet of 1680, 1680.