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SUMMARY:Novel Methods for Determining the Evolution of Turbulence in the S
 urface Boundary Layer - Natasha Lucas\, University of Bangor
DTSTART:20150514T100000Z
DTEND:20150514T110000Z
UID:TALK59058@talks.cam.ac.uk
CONTACT:Dr Alexander Brearley
DESCRIPTION:The Surface Boundary Layer (SBL) interfaces the fluxes of heat
  and momentum between oceans/lakes and the atmosphere\, governing surface 
 temperatures and mixed layer depths. Vertical exchange is driven by turbul
 ent mixing. A way of measuring this is through the rate of dissipation of 
 turbulent kinetic energy. \nTurbulent energy dissipation is notoriously di
 fficult to measure in the SBL\; most currently employed techniques involve
  ship borne surveys using free-falling microstructure profilers which is l
 abour intensive\, costly and can only be carried out for short surveys/cru
 ises. Moreover the ships wake and instrument limitations mean that near su
 rface measurements of dissipation are often contaminated. \nRecent work ha
 s been carried out as part of the NERC OSMOSIS project whereby two new tec
 hniques have been employed to sample the SBL\; the ADCP structure function
  technique and the Ocean Microstructure Glider. This work details observat
 ions and validation using these techniques\, and the usage of results to i
 nvestigate and parametrise the structure and evolution of the SBL.\n
LOCATION:British Antarctic Survey\, conference room
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