Temperature variability at depth near the Dotson Ice Shelf.
Time series of temperature at 753 m on the sediment trap mooring deployed during ASPIRE on 16 December 2010, retrieved 16 February 2012 (Ducklow et al., 2015). Trap was located at 73.82°S and 113.07°W (bottom depth 785 m). Also shown are the upper and lower temperature ranges observed by the Jacobs mooring (deployed at 74.06°S and 112.42°W during 2006–07, sensor depth 851 m, ranges based on Figure 7 in Jacobs et al., 2012). This time series shows considerable temporal variability, from weekly to seasonal. The latter differs somewhat from the seasonal variability observed at 851 m by the Jacobs mooring in 2006–2007 (the latter showed cooler temperature in ∼ March–May and ∼ September–October, whereas here cooler temperatures are distinct in December–February).