Mountains are of crucial importance for many environmental, scientific social and economical reasons. From a climatic point of view, they play a fundamental role in the climate system and are unique areas for the detection of climate change. Despite the importance of mountains, meteorological observations at these areas are scarce and lacking of good quality. Remoteness, extreme environmental conditions and difficulties of having powerful energy sources and good communications are the main reasons for this.
Peñalara Natural Park (Central System, Spain) has been object of numerous scientific programs under a wide spectrum of disciplines. Most of these programs require a scientific quality meteorological. Due to the complexity of the terrain it is necessary to conduct in situ measurements with a high density of sites in order to have representative data series.