Study compares logbooks during the Heroic Age of Antarctic Exploration (1897–1917) to satellite observations from the period 1989–2014, finding summer sea ice edge conditions were surprisingly comparable to the present day in many sectors.

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Study compares logbooks during the Heroic Age of Antarctic Exploration (1897–1917) to satellite observations from the period 1989–2014, finding summer sea ice edge conditions were surprisingly comparable to the present day in many sectors.