Meteorological measurements and observations at Zákupy in 1718-1720

Meteorological observations of the physician Johann Carl Rost at Zákupy (north Bohemia) in the years 1718-1720, published in the overviews of meteorological observations from several European localities by a Wrocław physician Johann Kanold, are analysed. Whereas from October 1718 to December 1719 and from April to December 1720 it is only summary monthly information, from 21 December 1719 to 31 March 1720 Rost performed three times a day measurements of air temperature and pressure and observations of the wind direction and the course of the weather. These records are the object of detailed climatological analysis, completed by the reconstructed surface pressure field of these months. The summarising monthly information is compared with accessible data of Czech narrative sources. Rost's observations are so far the oldest systematic instrumental measurements in the Czech Lands.