Long Swiss Meteorological Series
The project “Long Swiss Meteorological Series” provided revised as well as new long Swiss meteorological time series that reach back beyond the start of the official Swiss network in 1863.The two only previously available long series, Geneva and Basel, were complemented by digitising additional past segments. Long gaps that were hitherto filled with data from stations that are relatively far away could now partly be filled with data from the cities. Moreover, both series rely largely on few, long segments, whereas there are many further segments in both cases, which help to improve or confirm the quality of the records and support a better homogenisation. In addition to Geneva and Basel, the existing record from the Gr. St. Bernard was back-extended by two years. In addition, the project also provided new, long series. The two most important ones are those from Zurich and Bern, providing temperature records back to 1756 and 1760, respectively (the Zurich series reaches even back to 1708 for pressure and precipitation, though with long gaps). Both are composed of a larger number (17 and 19, respectively) of segments. Finally, the project also contributed to the digitisation and documentation of long meteorological series from Marschlins (1782-1863), Schaffhausen (1794-1845), Aarau (1807-1865), Delémont (1801-1832), Vevey (1805-1840), and St. Gallen (1812-1853) as well as many shorter records. All data have been submitted to the in-situ database of the Copernicus Climate Change Service, MeteoSwiss, and EURO-CLIMHIST. Homogenisation was undertaken for the temperature records from Zurich, Bern, Basel, and Geneva, yielding new and revised, long Swiss records.