by Dan Hughes
I recently ran across the paper by Isenko et al. [2005] listed below. The second paragraph of the introduction states:
“According to the conservation of energy, the loss of potential energy for a volume of water is sufficient to warm it by 0.2 C for each 100 m of lowering.”
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by Judith Curry
I have a new article published in the latest issue of International Affairs Forum.
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by Dan Hughes
The contribution of viscous dissipation conversion of kinetic energy into thermal energy has been significantly over-estimated in three recent publications. The kinetic energy content of the macro-scale mean flow is assigned to be the heat dissipation into thermal energy. The estimate leads to temperature increases that make significant contributions to melting ice on Greenland.
A recent news release announced the findings of the research, and a video of a melt-lake draining into the glacier ice is in the news release and also at YouTube here.
A different estimate, in which the viscous dissipation is determined at the micro-scale of the flow, is calculated in these notes. This estimate, and the associated temperature increases in the flow, are significantly less than that based on the macro-scale. A PDF file with my analysis is here [BSLdissip02]
Comments, especially corrections for incorrectos, will be appreciated.
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by Robert Ellison
I don’t raise the alarm at all, but there are tipping points in the Earth system. Megafloods and megadroughts. Abrupt warming or cooling of many degrees C in years or decades. Glacials and interglacials. Solar energy driving patterns of planetary turbulence and an ice, cloud and biology response. These have always been with us. Our limited geophysical instrumental series reveal a variability that can’t be distinguished from anthropogenic warming effects (Koutsoyiannis 2020 ). So it’s happening but perhaps not quite the end of the world yet.
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by Judith Curry
Russia’s invasion of Ukraine is inextricably linked to the global energy crisis, which is inextricably linked to the so-called climate ‘crisis’.
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