Historical press as a meteorological and climatic information recovery source. The case of Tarragona city (Spain)

The historical press is a source of meteorological and climatic information in addition to the traditional documentary sources. In this study is presented the recovery process of meteorological variables from the city of Tarragona (Spain) from old newspapers. Firstly, it details the process of locating data in digital form, scattered in different journals, data that has been manually digitized for preservation and subsequent handling. The analysis of different meteorological variables recovered can often see the different changes in measurements, locations and instruments used. It has metadata retrieval for subsequent manipulation of weather variables is as homogeneous as possible. Finally we show the strengths and weaknesses of meteorological data retrieval through old press.