The abundant and convincing evidences on climatic change have originated in the last years a growing interest in the study of climate in the past. The short length of the instrumental records has increased the interest in the use of climate reconstruction techniques like dendrochronology, the study of the ice cores, the corals lake sediments, etc. Among all of them, the use of documentary sources presents evident advantages, allowing better temporal resolution than other most of the techniques. The interest shown by the scientific community has also been reflected in our country, where, specially in the last five years, numerous works have been developed in this direction. Thus, more than 30 papers have been published in peer-reviewed journals. There have been several European with Spanish research groups and national projects in this subject. However, the Spanish documentary sources are slightly explored in their double view: Reconstruction of the Iberian Climate and reconstruction of the global climate. The present project has as objective the creation of a thematic network promoting research in climate reconstruction from documentary sources, improving the cohesion between each research group, improving the multi-disciplinary character involving the documentary sources data archives with the research groups and increasing the diffusion of the obtained results and the potential use of the documentary sources. Finally the network expects to contribute to the work of each participating group in RECLIDO and tries to stimulate another research groups to participate in the project. It is a new initiative in our country in two senses: the scope and the multi-disciplinary character that includes climatology, meteorology, history, geography, etc. The main contents of the web will be: data bases, news interchange and diffusion of funding opportunities.