In the present thesis, the climate station network WegenerNet is introduced as a pioneering experiment for long-term observation at very high resolution. The WegenerNet comprises 151meteorological stations within an area of about 20km15km in south- eastern Styria, Austria, centered near the town of Feldbach. The stations are arranged on a quasi-regular 1.4km1.4km grid and measure the main parameters air temperature, relative humidity and precipitation amount. Selected stations additionally provide measurements of wind and soil parameters. Furthermore, air pressure and net radiation are observed at one reference station. The collected data are processed by an automatic WegenerNet Processing System. The measurements are transferred from the stations to the dataserver by the GPRS-transmission technology of internet loggers (every hour in standard operation). The incoming data files are stored in a database and are checked by a Quality Control System. In seven quality layers the raw data are marked by a Quality Control Flag corresponding to their technical and physical plausibility. In the Data Product Generator, gridded data of the main parameters are derived on a regular 200m200m UTM grid from single station measurements by Inverse Distance Weighting. Subsequently, station data and gridded data (5-min data) are also averaged to various weather and climate data products (from half-hourly up to annual). For application purposes the resulting data and further information on the station network are available for users at the WegenerNet data portal (www.wegenernet.org) in near-real time (data latency is <1h to 2h in standard operation).The WegenerNet provides highly resolved single station data and regular grids since January 2007 as a new data source for research projects investigating local-scale climate and environmental change. Moreover, the data records serve as supporting information for various applications in the study region.