Data Acquisition And Keypunching Codes For Marine Meteorological Observations At The Royal Netherlands Meteorological Institute, 1854–1968

A chronological review of Dutch historical marine meteorological codes and logbook instructions is presented for worldwide ships’ observations covering the period 1854-1982. In order to rescue the metadata of these observations, punch card formats that were used to process the observations mechanically, and codes for reproduction of the data are described. In addition some background information about the process of digitizing the observations is given.