We determine the optimal exploitation time-paths of two energy resources, one being depletable and polluting, namely a fossil fuel, the other being renewable and clean. These optimal paths are considered along with the two following features. First, the cumulative atmospheric pollution stock is...

Saltwater intrusion in coastal aquifers is one of the main causes of groundwater quality degradation. These intrusions are often due to excessive withdrawals in sensitive parts of coastal aquifers. The scope of this paper is to identify specific problems set by optimal management of such a...

Many countries are promoting biofuels as a substitute for scarce oil. This paper develops a dynamic model of land allocation between food and energy and shows how the model can be calibrated using standard optimization techniques. Some possible implications of the trade-offs between food and...

[fre] Les problèmes d'intrusion d'eau salée dans les aquiferes côtiers constituent aujourd'hui l'une des principales causes de détérioration de la qualité de leurs eaux. L'eau de mer, plus dense que l'eau douce, envahit ces aquiferes dès que les prélèvements sont suffisamment intenses...

[eng] Is there Cause for Concern over the Drop in Aquifer Levels ? . by Jean-Pierre Amigues, Pascal Favard and Michel Moreaux . This paper analyses the problems raised when managing continental aquifers replenished by the trickledown of surface water. These aquifers can be regarded as natural...

Using the Chakravorty et al. (J Econ Dyn Control 30:2875–2904, <CitationRef CitationID="CR6">2006</CitationRef>) ceiling model, we characterize the optimal consumption paths of three energy resources: dirty oil, which is non-renewable and carbon emitting; clean oil, which is also non-renewable but carbon-free thanks to an abatement...</citationref>

Inside a standard growth model with exhaustible resources, we study the optimal growth policy of an economy submitted to a climate constraint, taking the form of a ceiling over admissible atmospheric carbon concentrations. The optimal scenario is a three phases path: a rise of carbon...