Aproximación a los combustibles vegetales –carbón y leña– como proxy-data climático en el siglo XVIII y principios del XIX

The evolution in the consumption of charcoal and wood in ecclesiastical institutions in the city of Burgos, Salamanca and Seville, that has been registered – Cathedral, hospitals, churches, schools, … – makes possible, I think, argue that the rising evolution in, the usufruct of fuel is a powerful weather thermometer for the final period of the Old Regime. The increase in demand for charcoal and wood is not only related to the increase of the population served or to an improvement in the conditions of material culture but to the weather deterioration during the Malda fluctuation and the Dalton’s minimum. The colder weather and the more meteorological disasters, the more consumption of vegetable fuel.