The first WMO Automatic Digital Barometer Intercomparison was held in De Bilt, the Netherlands at the Royal Netherlands Meteorological Institute from begin 1989 to July 1991. Thirty-three instruments of 14 different designs were entered by nine Members of WMO 1). This report contains a description of the procedures followed, the data acquisition, the data analysis, and a technical description of the principles of the instruments. Finally the results of the intercomparison are given in a general table and the result per instrument in detail. The report also includes recommendations for operational use. Also possible use of digital barometers as portable standards is discussed.
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