New “exascale” supercomputer can run incorrect climate models even faster

Exascale system expected to be world’s most powerful computer for science and innovation. OAK RIDGE, TN – The U.S. Department of Energy today announced a contract with Cray Inc. to build the Frontier supercomputer at Oak Ridge National Laboratory, which is anticipated to debut in 2021 as the world’s most powerful computer with a performance…

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Northern Hemisphere snow cover trends (1967-2018): A comparison between climate models and observations

According to the climate models, snow cover should have steadily decreased for all four seasons. However, the observations show that only spring and summer demonstrates a long-term decrease. Ronan Connolly, Michael Connolly, Willie Soon, David R. Legates, Rodolfo Gustavo Cionco , and V. M. Velasco Herrera Abstract: Observed changes in Northern Hemisphere snow cover from…

New study attempts to “squeeze out” uncertainty in climate models

From the “we’re gonna need a bigger computer” department. Climate model uncertainties ripe to be squeezed The latest climate models and observations offer unprecedented opportunities to reduce the remaining uncertainties in future climate change, according to a new study. Although the human impact of recent climate change is now clear, future climate change depends on how…

Study: Another failure of climate models – they can’t handle barometric pressure change

One of the most basic meteorological factors isn’t handled by climate models – and they run off in a “hockey stick” style. From the UNIVERSITY OF LINCOLN Climate models fail to simulate recent air-pressure changes over Greenland Climatologists may be unable to accurately predict regional climate change over the North Atlantic because computer model simulations have…

Survey tries to assess the usefulness of climate models

From the INSTITUTE OF ATMOSPHERIC PHYSICS, CHINESE ACADEMY OF SCIENCES and the “all models are wrong, some might be useful” department. Researchers work toward systematic assessment of climate models A research team based at the Pacific Northwest National Laboratory in Richland, Wash., has published the results of an international survey designed to assess the relative importance climate scientists…

Study: Climate Models Need More Historical Fudge Factors

Guest essay by Eric Worrall The researchers claim adding historical data derived fudge factors to correct the discrepancy between climate models and historical observations, producing a Frankenmodel mix of fudge factors and defective physics, will make climate predictions more reliable. New approach to global-warming projections could make regional estimates more precise Computer models found to…

NASA finds something else climate models are missing…. forcing from 'Secondary Organic Aerosols'

A new paper published by NASA by Tsigaridis and Kanakidou suggests that climate models have missed the forcing effects of organic aerosols, such as VOC’s from trees, oceans, and other sources that combine chemically in the atmosphere to create new compounds. Known as Secondary organic aerosols (SOA), they say “SOA forcing could exceed that of sulfate…