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The Trouble with Global Climate Models

Guest essay by Rud Istvan The IPCC’s Fifth Assessment Report, Working Group 1 (AR5 WG1) Summary for Policy Makers (SPM) was clear about the associated Coupled Model Intercomparison Project (CMIP5) archive of atmosphere/ocean general circulation models (AOGCMs, hereafter just GCM). CMIP5 results are available via the Royal [Koninklijk] Netherlands Meteorological Institute (KNMI). The SPM said…

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Pocket-calculator climate model outperforms billion-dollar brains

From Press Release:Four skeptical researchers’ new Chinese Academy paper devastatingly refutes climate campaigners’ attempt to criticize their simple model… In January 2015, a paper by four leading climate researchers published in the prestigious Science Bulletin of the Chinese Academy of Sciences was downloaded more than 30,000 times from the website at scibull.com. By a factor…

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Climate Model Inadequacies for Sea Ice

Via CO2science.org Near the start of the current century, Holland (2001) wrote that with respect to contemporary state-of-the-art global climate models, “some physical processes are absent from the models,” while noting that in light of the coarse-resolution grids employed by the models, “some physical processes are ill resolved” and that others are actually “missing from…

A three-dimensional spatial structure of mixing in an idealized ocean simulation, computed using Lagrangian particle statistics. CREDIT Los Alamos National Laboratory

Analyzing ocean mixing reveals insight on climate

Eddies pull carbon emissions into deep ocean, new model simulates complex process From DOE/LOS ALAMOS NATIONAL LABORATORY LOS ALAMOS, N.M., June 24, 2015–Scientists at Los Alamos National Laboratory have developed a computer model that clarifies the complex processes driving ocean mixing in the vast eddies that swirl across hundreds of miles of open ocean. “The…

Circulation in the ITCZ

Lamenting the Double ITCZ Bias in CMIP5 Climate Models

From CO2 Science, something that Willis Eschebach holds dear as a regulating mechanism: The Inter-Tropical Convergence Zone In what must be a difficult acknowledgement to make, Oueslati and Bellon (2015) write that “the double intertropical convergence zone (ITCZ) bias still affects all the models that participate in CMIP5,” – i.e. the Coupled Model Intercomparison Project,…