Archives par mot-clé : Anti-global warming

New Confirmation that Climate Models Overstate Atmospheric Warming

by R. McKitrick, Aug 17, 2021 in ClimateEtc

Two new peer-reviewed papers from independent teams confirm that climate models overstate atmospheric warming and the problem has gotten worse over time, not better. The papers are Mitchell et al. (2020) “The vertical profile of recent tropical temperature trends: Persistent model biases in the context of internal variability”  Environmental Research Letters, and McKitrick and Christy (2020) “Pervasive warming bias in CMIP6 tropospheric layers” Earth and Space Science. John and I didn’t know about the Mitchell team’s work until after their paper came out, and they likewise didn’t know about ours.

Mitchell et al. look at the surface, troposphere and stratosphere over the tropics (20N to 20S). John and I look at the tropical and global lower- and mid- troposphere.  Both papers test large samples of the latest generation (“Coupled Model Intercomparison Project version 6” or CMIP6) climate models, i.e. the ones being used for the next IPCC report, and compare model outputs to post-1979 observations. John and I were able to examine 38 models while Mitchell et al. looked at 48 models. The sheer number makes one wonder why so many are needed, if the science is settled. Both papers looked at “hindcasts,” which are reconstructions of recent historical temperatures in response to observed greenhouse gas emissions and other changes (e.g. aerosols and solar forcing). Across the two papers it emerges that the models overshoot historical warming from the near-surface through the upper troposphere, in the tropics and globally.

An anti–global warming hysteria book is driving Norwegian warming hysterics nuts

by G. Tomb, Apr 9, 2021 in AmercianThinker

Other than by misspelling “fjord,” how would an American geologist draw the ire of a pair of Norwegian politicians?  Answer: Write a book that counters the notion that human activity is causing the globe to warm with catastrophic consequences.

Gregory Wrightstone’s 2017 book, Inconvenient Facts: The Science that Al Gore Doesn’t Want You to Know, was published in Norway and is being promoted by the Climate Realists, a Norwegian organization, which shares the author’s view that modern warming is neither unusual nor unprecedented.

Backed with 90 illustrations and 15 pages of references, the book presents 60 footnoted facts inconvenient to the Western elite’s absurd narrative about global warming.  Among them: Most of the last 10,000 years have been warmer than today, including the Medieval Warm Period, when Vikings raised barley on Greenland, and the Roman Warm Period, when citrus grew in northern England.