A quasi-empirical model of the hurricane boundary layer

Elsberry, Russell L.; Pearson, Nils Alexander Silliman.; Corgnati, Leino B.

doi:10.1029/jc079i021p03033

Cited by 7 publications

(3 citation statements)

References 15 publications

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“…Under these assumptions the 0e fields can be predicted from time-dependent equations for the potential temperature and specific humidity distributions in the boundary layer. These equations are dependent on the surface heat and momentum fluxes, and in present experiments the variations are primarily due to the predicted sea surface temperature.A two-layer baroclinic model byCardone [1969] for the marine boundary layer was adapted byElsberry et al [1974].In this model an iterative method is used to solve for the vertical wind profile and implied heat flux given the wind speed at the top of the boundary layer from (7) and the air-sea temperature difference. The surface roughness is internally determined as a function of friction velocity.…”

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confidence: 97%

A mixed layer model of the oceanic thermal response to hurricanes

Elsberry¹,

Fraim²,

Trapnell³

1976

J. Geophys. Res.

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A two‐layer model of the upper ocean is used to simulate the thermal response to hurricane passage. Mixed layer temperature and depth equations similar to those of Kraus and Turner (1967) and Denman (1973) are used to describe the upper layer. Horizontal and vertical advection are calculated from Ekman theory, with an empirical partitioning of the input stress between the mechanical generation and entrainment mixing terms. A compensating return flow below the Ekman depth, but within the upper 100 m.of the seasonal thermocline, is imposed. The surface heat and momentum fluxes are calculated with the symmetrical hurricane model of Elsberry et al. (1974). The response to both a stationary and a moving hurricane of constant intensity is simulated. The model produces regions of near‐surface cooling, subsurface cooling induced by upwelling, and an intermediate layer of warming due to entrainment and convective mixing. A decrease in mixed layer depth near the center and an increase outside the radius of maximum winds are obtained. Oceanic heat budget calculations suggest that advective processes, rather than heat loss to the storm, play the dominant role in modifying the ocean thermal structure near the center of the storm. Effects of varying both oceanic and atmospheric model parameters are tested to illustrate the sensitivity of the model.

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confidence: 97%

A mixed layer model of the oceanic thermal response to hurricanes

Elsberry¹,

Fraim²,

Trapnell³

1976

J. Geophys. Res.

Self Cite

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show abstract

“…A sustained upwelling for 18 hours duration would account for the shallow minimum mixed-layer depth (Table IV) There were several key assumptions about the way in which the ocean and storm interact: 1) wind stress was partitioned into making currents and turbulence based on the mixed-layer depth, 2) ocean currents were assumed to be in Ekman balance and to respond immediately to changes in the stress pattern, 3) it was assumed that there were no gradients of temperature or ocean velocity across the path of the storm, 4) the storm was assumed to be wind-dominated, and 5) since the storm was mature at initiation the total stress imparted exponentially until 95% of the total stress was imparted to the ocean at 9 hours.…”

Section: Effect Of Storm Movement On Ocean Responsementioning

confidence: 99%

“…Integrating equation (3) (6) where the 6 symbols indicate a deviation from p = 1005 millibars and 9 =350 K. The radial pressure field was computed by integrating the gradient wind over the radius, using the wind speed from (1) and (2 …”

Section: Inside Rmentioning

confidence: 99%