Category Archives: Analysis & Research

Rethinking the ‘Slow-Down’: New Work Revises Warming Estimates Upward

New research reflects data from previously unmeasured Arctic, Antarctic, and central Africa areas, refuting recent thinking on a purported recent slow-down in warming and increasing estimates of rising temperatures globally.


California’s ‘Rim Fire’ and Climate Change…Dots Connected…Or Not?

Many media reports link California’s historic summer of 2013 ‘Rim Fire’ to a changing climate. But differences among the American West’s forest regions make broad generalizations risky.


IPCC’s New Estimates for Increased Sea-Level Rise

Recently released sea-level rise findings from IPCC project greater increases than earlier forecast, but continuing uncertainties persist, and drawing direct comparisons with past estimates is difficult.


‘Vertical Human Fingerprint’ Found in Stratospheric Cooling, Tropospheric Warming

Newly published research in ’PNAS’ identifies what authors call a ‘vertical human fingerprint’ in satellite-based estimates of atmospheric temperature changes, adding still more to confidence levels about human influences in warming.


The Numbers Game: Communicating Climate Change by the Numbers

In evaluating arguments on climate change, great care is needed in how numbers are used…and in what context. With this week’s scheduled release of the first volume of IPCC’s next assessment report, this feature reviews recent work on numeracy.


Examining the Recent Slow-Down in Global Warming

With upcoming release of IPCC Fifth Assessment Reports beginning late in September, there will be a sharp focus on specific issues like projected sea-level rise but also on broader issues like climate sensitivity and the decade-and-a-half-long slow-down in the rate [...]


A Look Back to See the Present More Clearly

John F. Kennedy, the Cold War and Echoes of the Climate Change Challenge

In this 50th anniversary year of JFK’s death, it’s worth pondering which of the many causes and themes advanced by Kennedy best speak to our time. John Wihbey reviews a new history by Jeffrey Sachs and looks at the scientific [...]


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