M. Mohrmann, S. Swart, and C. Heuzé (2022) Observed Mixing at the Flanks of Maud Rise in the Weddell Sea, Geophysical Research Letters, vol 49, e2022GL098036, doi:10.1029/2022GL098036

At the beginning of his PhD under our supervision, Martin Mohrmann deployed two high frequency autonomous profilers with under ice capability by Maud Rise. That means that even in the middle of winter, we have daily profiles of the water column. The “fun” thing is that they drifted in opposite directions, so their synchronous sampling of two different locations revealed crucial spatial effects in that region.

Key findings (copied from the paper):

• High frequency (1–3 days) float profiles were collected over both Maud Rise and its vicinity over several seasonal cycles
• Temperature and salinity below the mixed layer are strongly bathymetry-dependent at Maud Rise
• Enhanced spiciness variability indicates intrusions and mixing between Maud Rise Deep Water and the surrounding Warm Deep Water

Stay tuned for paper number 3, to be submitted soon, where these profilers are compared to older floats to this time determine the temporal effects.

Download the full text here.