Emergy assessment of global renewable sources

The empower that is derived from solar, geothermal and tidal sources drives the productive processes of the geobiosphere and is responsible for developing exergy gradients (work potential) to be transformed into secondary exergy sources (wind, and chemical potential of rain water) and tertiary sources (chemical and geopotential energy of river discharges and the available energy of breaking waves). In this paper we use the geobiosphere emergy baseline (GEB) to compute transformities for secondary and tertiary renewable exergy sources. We also refine methods used to compute secondary and tertiary sources.

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