'Pollution in the atmosphere is having an unexpected consequence, scientists say—it's helping to cool the climate, masking some of the global warming that's occurred so far. That means efforts worldwide to clean up the air may cause an increase in warming, as well as other climate effects, as this pollution disappears.' ... 'The new study relied on four global climate models, which the researchers used to simulate the effects of removing all human-caused emissions of the major aerosols, including sulfate and carbon-based particles like soot. The resulting global warming, they concluded, would be anywhere from 0.5 to 1.1 degrees Celsius.'
University of Exeter rules out high-end temperature increases
The research also has implications for the climate-change movement, said University of Colorado Boulder professor Roger A. Pielke Jr.: “If your climate advocacy is grounded in ‘[it’s] gonna be bad, really bad’ arguments, then new science (‘not as bad’) puts you in an awkward position,” he said on Twitter. “No doubt some catastrophists will today feel a need to diss the new study lest they give evil deniers due.” - "Clever new climate change study. Not as bad as has been projected. That is good news. Right?"
WASHINGTON (AP) — Consider this cold comfort: A quick study of the brutal American cold snap found that the Arctic blast really wasn't global warming but a freak of nature...The study, based on observations and statistics, did not find evidence for a popular scientific theory that links melting Arctic sea ice to blasts of cold air escaping the top of the world.