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. 2007 May 21;362(1488):2215–2232. doi: 10.1098/rstb.2006.1946

Figure 1.

Figure 1

Cold stable nature of McMurdo Sound seawater. (a) High resolution, continuous seawater temperature records from November 1999 to September 2004 at the McMurdo Station water intake jetty (30 m depth). Water temperatures remain steadfast at freezing (−1.91°C) from April through end of November each year. Peak water temperature from summer warming episodes is given for each of the five consecutive years. Maximum summer rise from freezing is as little as 0.6°C (2003), to less than 1.5°C (1999). (b) A CTD depth–temperature profile during austral spring (7 October 2004), showing no temperature variation from freezing from surface to below 400 m. (c) A CTD depth–temperature profile during austral summer (29 December 2000), showing slightly warmer temperature at surface, but little temperature variation from freezing at depths below approximately 100 m.