Air-Ice-Ocean Interaction: Turbulent Ocean Boundary Layer by Miles McPhee

By Miles McPhee

At a time whilst the polar areas are present process fast and unheard of switch, figuring out exchanges of momentum, warmth and salt on the ice-ocean interface is important for realistically predicting the long run nation of sea ice. by means of delivering a dimension platform principally unaffected via floor waves, drifting sea ice presents a distinct laboratory for learning points of geophysical boundary layer flows which are tremendous tough to degree in other places. This booklet attracts on either broad observations and theoretical rules to increase a concise description of the effect of tension, rotation, and buoyancy at the turbulence scales that regulate exchanges among the ambience and underlying ocean while sea ice is current. a number of attention-grabbing and specific observational information units are used to demonstrate diversified points of ice-ocean interplay starting from the influence of salt on melting within the Greenland Sea marginal ice area, to how nonlinearities within the equation of kingdom for seawater have an effect on blending within the Weddell Sea.

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Extra resources for Air-Ice-Ocean Interaction: Turbulent Ocean Boundary Layer Exchange Processes

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H. ) Scaling Laws in Ice Mechanics and Dynamics, pp. 315–323. Kluwer, Dordrecht (2001) Martinson, D. : Evolution of the Southern Ocean winter mixed layer and sea ice: Open ocean deepwater formation and ventilation. J. Geophys. , 95, 11641–11654 (1990) McPhee, M. : Analysis and prediction of short term ice drift. Transactions of the ASME, J. Offshore Mech. , 110, 94–100 (1988) McPhee, M. : Is thermobaricity a major factor in Southern Ocean ventilation? , 15 (1), 153–160 (2003) McPhee, M. : Upwelling of Arctic pycnocline associated with shear motion of sea ice.

2005). 2 During this time, we measured turbulent heat flux in the upper part of the boundary layer that was at least an order of magnitude greater than at any other time during the year-long deployment; enough to cause significant basal melting when the ice is normally at its coldest. The particular event that occurred on March 19 (day 78 of 1998) was part of a more widespread period of 2 A time-lapse video of the ice shear taken from the ship’s bridge was shown on the CBS Nightly News. 26 2 Basic Physical Concepts Fig.

4). Means of each artificial wT series were then assigned to the random variable y. Each panel in Fig. 31e−007 0 −4 −2 0 2 4 Fig. 5 Histograms of the artificial mean values (x) for 200 artificial time series from a random sampling of the original 15-min time series of the w T products (length: 7200). Abscissa is y = (x − x)/ ¯ σ were σ is the sample std. deviation. Dashed curves are a normal distribution for zero mean and unit standard deviation 48 3 Turbulence Basics with σy the sample standard deviation of the y variable, and where the ordinate is n N∆ z where n is the number of samples in each bin of width ∆ z out of the total population N (equal to 200).

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