Figures & data
Fig. 1 Amundsen Gulf in Canada's western Arctic with the locations of the CCGS Amundsen for January through April 2008. There is one dot per day indicating the median ship position for that day.
Fig. 2 A time series of the fractional surface area of Amundsen Gulf that was open water or covered by new and/or young ice from 7 January to 5 May.
Fig. 3 (a) ABL (0–1000 m) microwave radiometric temperature profiles for 0500, 0600, and 0700 utc, 14 February 2008. (b) Heat flux convergence profiles for 100 m layers (positive values indicate heat accumulation), 14 February 2008. From 0500 to 0600 utc, the mesoscale sensible heat flux = 13.3 W m−2, and the heat flux convergence reached 350 m. From 0600 to 0700 utc, the mesoscale surface heat flux = 26.3 W m−2, and the heat flux convergence reached 450 m.
Fig. 4 (a) ABL (0–1000 m) microwave radiometric temperature profiles for 0700, 0800, and 0900 utc, 14 April 2008. (b) Heat flux convergence profiles for 100 m layers (positive values indicate heat accumulation) from 0700 to 0800 utc and from 0800 to 0900 utc, 14 April 2008.
Fig. 5 Median, 10, and 90th percentile heat flux convergence values attributed to sensible heat flux from the unconsolidated sea-ice surface for 100 m layers from the surface to 700 m. The best-fit curve for the median profile shows that the heat flux convergence decreased logarithmically with height.
Fig. 6 Frequency distribution for 520 hourly values of mesoscale sensible heat flux from the unconsolidated sea-ice surface of Amundsen Gulf from January through April 2008.
Fig. 7 Mesoscale sensible heat flux from the unconsolidated sea-ice surface of Amundsen Gulf versus the depth of heat flux convergence (heat accumulation).
