Thermal emissions and climate change: Cooler options for future energy technology

Details Thermal emissions and climate change: Cooler options for future energy technology Thermal emissions and climate change: Cooler options for future energy technology

2008-11-04

arxiv.org/abs/0811.0476v2

Physics

Atmospheric and Oceanic Physics

Updated manuscript

Scientific paper

Global warming arises from 'temperature forcing', a net imbalance between energy fluxes entering and leaving the climate system and arising within it. Humanity introduces temperature forcing through greenhouse gas emissions, agriculture, and thermal emissions from fuel burning. Up to now climate projections, neglecting thermal emissions, typically foresee maximum forcing around the year 2050, followed by a decline. In this paper we show that, if humanity's energy use grows at 1%/year, slower than in recent history, and if thermal emissions are not controlled through novel energy technology, temperature forcing will increase indefinitely unless combated by geoengineering. Alternatively, and more elegantly, humanity may use renewable sources such as wind, wave, tidal, ocean thermal, and solar energy that exploit energy flows already present in the climate system, or act as effective sinks for thermal energy.

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