An autonomous atmospheric pressure recorder for establishing polar sea surface height

Abstract

An autonomous low-power device for the precise measurement (+or-0.7 mbar) of atmospheric pressure versus date/time in Arctic conditions (-55 degrees C, 120-km/hr wind) is described. Data are stored using 'burned in silicon' technology. Measurements are made every hour on the hour over a period of 12 months. Static pressure is measured using a special port designed to be insensitive to the effects of wind. Endurance problems associated with a one-year instrument operating in extremely harsh conditions are discussed.<>