Re: [geo] Wind and wave energies are not renewable after all

2011-04-02 Thread Alvia Gaskill
Wind and wave energy are the result of the conversion of solar energy into kinetic energy, i.e. the motion of molecules. Once converted into kinetic energy it's a use it or lose it proposition. Extracting kinetic energy from the atmosphere or the ocean doesn't mean it won't be replaced by

[geo] Re: Wind and wave energies are not renewable after all

2011-04-02 Thread Dan Whaley
Since one of the issues w/ warming is that the atmosphere can hold more energy-- more precip, storms wilder weather-- i suppose removing some excess could be considered a form of geoengineering... The magnitude of the changes was comparable to the changes to the climate caused by doubling

Re: [geo] Wind and wave energies are not renewable after all

2011-04-02 Thread Stephen Salter
Andrew Most of the energy in waves is at present dissipated as heat in water and sand at the beach. Data on the North Atlantic wave climate combined with the flow of the North Atlantic Drift suggest an increase in temperature on the beach by about 1/50 of a degree Celsius. If we built

Re: [geo] Wind and wave energies are not renewable after all

2011-04-02 Thread Nando
My reading of the article suggested that the authors of the study were principally claiming that wind has an impact on climate, so it is already being used. What wasn't clear from the article was *what type* of impact reducing the energy level of winds all over the globe through the prolific use

Re: [geo] Wind and wave energies are not renewable after all

2011-04-02 Thread JohnDuke
Indeed, the authors do not appear to understand that a watt (joule/second) is a rate of energy conversion, not a unit of energy. If energy is converted slower here, there is more to convert there. A more interesting line of inquiry is the evaporation effect of slowing down surface wind (but not