Measurements of Iceberg Melt Rates Using High?Resolution GPS and Iceberg Surface Scans

Increasing freshwater input to the subpolar North Atlantic through iceberg melting can influence fjord-scale basin-scale ocean circulation. However, magnitude, timing, and distribution of this have been challenging quantify due minimal direct observations subsurface geometry melt rates. Here we present novel in situ methods capturing change at high-temporal -spatial resolution using four high-precision GPS units deployed on two large icebergs (>500 m length). In combination with measurements surface geometry, calculate rates between 0.10 0.27 m/d over 9-day survey. These are lower than those proposed previous studies, likely individual geometries calculations. combining these new rate broad spatial coverage remote sensing, better predict impact increasing injection from Greenland Ice Sheet.