Magnetoreflection of the semimetals for circularly polarized radiation

Priestley, M. G.; Thomas, Miriam H.

doi:10.1016/0378-4363(77)90060-2

Cited by 5 publications

(8 citation statements)

References 7 publications

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“…Such eddies have been observed in the atmosphere with strong and uniform surface buoyancy flux (e.g. Priestley 1954; Lenschow et al 1980). As follows from perturbation analysis (Elperin et al 2002(Elperin et al , 2006 they can result from the convective flow instability, and are closer in nature to almost regular micro-circulations than to real, chaotic turbulence.…”

Section: Introductionmentioning

confidence: 90%

“…A heat-transfer model consistent with the above free-convection theory (Malkus 1954;Priestley 1954) is based on the assumption that the turbulent mixing processes are fully controlled by locally generated convective eddies. Because W c diminishes toward the surface, the depth of the near-surface viscous sub-layer ∼ν/W c (where ν is the molecular viscosity) should be large, so that even high-roughness elements are immersed in this sub-layer.…”

Section: Physical Background (A) Traditional Conceptsmentioning

confidence: 99%

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The influence of large convective eddies on the surface-layer turbulence

Zilitinkevich

Hunt

Esau

et al. 2006

Q. J. R. Meteorol. Soc.

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SUMMARYClose to the surface large coherent eddies consisting of plumes and downdraughts cause convergent winds blowing towards the plume axes, which in turn cause wind shears and generation of turbulence. This mechanism strongly enhances the convective heat/mass transfer at the surface and, in contrast to the classical formulation, implies an important role of the surface roughness. In this context we introduce the stability-dependence of the roughness length. The latter is important over very rough surfaces, when the height of the roughness elements becomes comparable with the large-eddy Monin-Obukhov length. A consistent theoretical model covering convective regimes over all types of natural surfaces, from the smooth still sea to the very rough city of Athens, is developed; it is also comprehensively validated against data from measurements at different sites and also through the convective boundary layer. Good correspondence between model results, field observations and large-eddy simulation is achieved over a wide range of surface roughness lengths and convective boundary-layer heights.

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Section: Introductionmentioning

confidence: 90%

Section: Physical Background (A) Traditional Conceptsmentioning

confidence: 99%

The influence of large convective eddies on the surface-layer turbulence

Zilitinkevich

Hunt

Esau

et al. 2006

Q. J. R. Meteorol. Soc.

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“…To widen the model capability globally, SWAT allows users to choose several methods to compute each hydrological process. In this research, the authors chose plant-evapotranspirationrelated estimation method of retention parameter used for surface runoff computation [56] and Priestley-Taylor method [57] to compute potential ET to represent hydrological characteristics of the watershed. Though Penman-Monteith method [58] is widely used in SWAT application, Priestley-Taylor method can also be used when the model is applied in wet condition, as seen in rice cultivated region, and it requires less climatic data input [29].…”

Section: The Application and Calibration Of Swat2012mentioning

confidence: 99%

Development of SWAT-PADDY for Simulating Lowland Paddy Fields

Tsuchiya

Kato

Jeong

et al. 2016

Preprint

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The consumption of rice, which recently increases globally, leads to requirement for planning sustainable water management for paddy cultivation. In this research, SWAT model was modified to evaluate sustainability of paddy cultivation. Modifications to simulate paddy cultivation are 1) to equip with a new water balance model of impounded fields, 2) to add an irrigation management option for paddy fields, which is characterized by flood irrigation managed by farmers on a daily basis, 3) to consider puddling operation that influences water quality and infiltration rate of soil. The enhanced model, named SWAT-PADDY, was applied to an agricultural watershed in Japan as a case study. The modified model succeeded in representing paddy cultivation in the study area. However, SWAT-PADDY underestimated base flow in irrigation period. The cause of this is inferred that the modified model doesn't represent return flow of excess withdrawal of river water. In conclusion, addition of the models of impoundment and management practices in paddy fields to SWAT improved field scale simulation of water balance and irrigation in paddy fields. However, further improvement of the model on irrigation return flow process is needed to better predict hydrology of watersheds dominated by paddy irrigation.

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“…Criteria for dry convection derived by Priestley (1953) yield thresholds between oscillatory and asymptotic modes and between asymptotic and absolute-buoyancy (limitless ascent) modes of the motion of a buoyant element, the thresholds depending on mixing rate and element size but not on initial conditions. For example, in an unstably stratified environment with I dTJdz -y,, I of the order lo-' to deg C m-I, the critical element radius for absolute buoyancy is of the order 100m.…”

Section: Top-hat Model (External Turbulence)mentioning

confidence: 99%

“…An alternative to turbulent entrainment is the mixing-rate (' open parcel ') theory of buoyant motion put forward by Priestley (1953Priestley ( , 1954. To date this theory has not been applied systematically to moist convection but Warner adapted it to Squires and Turner's model to derive the 1.w.c.…”

Section: Introductionmentioning

confidence: 99%

A numerical model of cumulonimbus convection generating a protected core

Berson

Baird

1975

Quart J Royal Meteoro Soc

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SUMMARYThe theory of buoyant motion in a turbulent environment due to Priestley (1953) is applied to steadystate Cb updraught. An axisymmetric numerical model of columnar convection is modified to allow for radial cloud structure and internal turbulence. In this model the net vertical body force on a fluid element is the buoyancy relative to adjacent elements, and represents a residual of environment-referred buoyancy and non-hydrostatic pressure gradient.Moisture exchange and lateral transfer of momentum and heat by mass exchange with the environment on the scale of the cloud are disregarded, yet the model gives realistic updraught velocities and cloud depth. It simulates such features as a dome rising from a protected core of the cloud, oscillating motion of cloud tops and penetration of the tropopause. In some respects the predicted behaviour compares favourably with actual measurements.An incidental result concerns the generating gross buoyancy which is determined by the ambient and pseudo-adiabatic temperature lapse rates. It appears that the values of the latter rate published in Smithonian Meteorological Tables and incorporated in pseudo-adiabats on aerological diagrams, are in error.

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Magnetoreflection of the semimetals for circularly polarized radiation

Cited by 5 publications

References 7 publications

The influence of large convective eddies on the surface-layer turbulence

The influence of large convective eddies on the surface-layer turbulence

Development of SWAT-PADDY for Simulating Lowland Paddy Fields

A numerical model of cumulonimbus convection generating a protected core

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