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Peter D. Killworth

requires boundary conditions at rigid surfaces. The horizontal component of u + is related to the horizontal components of u ′ and u , and so vanishes on vertical sidewalls. The value of w + , the vertical component of u + , at surface or floor is less obvious. (Unlike the horizontal component of the quasi-Stokes velocity, there is no kinematic reason for w + to vanish, since w + exists to satisfy continuity.) The problems are best seen by considering recent direct eddy

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Surendra S. Parasnis

1 APRIL 1991 NOTES AND CORRESPONDENCE 999NOTES AND CORRESPONDENCEThe Convective Boundary Layer during Active and Break Conditions of Summer Monsoon SURENDRA S. PARASNISIndian Institute of Tropical Meteorology, Pune, India22 March 1990, and 22 October 1990 ABSTRACT A case study of the convective boundary layer (CBL) during active and break conditions of Indian summermonsoon has

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Biljana Music and Daniel Caya

investigation. A review of different approaches to regional climate modeling was recently provided by Laprise (2008) . Because of their limited area, RCMs require time-dependent lateral boundary conditions (LBCs). Low-resolution reanalyses or GCM simulations usually provide the LBCs to RCMs. Recent studies showed that, when driven by realistic (appropriate and accurate) boundary conditions, RCMs are capable of capturing the overall observed regional climate evolution and can add realistic higher

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William Blumen

1314 JOURNAL OF THE ATMOSPHERIC SCIENCES VOLUME$$ NOTES AND CORRESPONDENCE A Note on Horizontal Boundary Conditions and Stability of Quasi-Geostrophic Flow WILLIAM BLUMEN Astro-Geophysics Department, Universiiy of Colorado, t~oulder 80309 3 January 1978 and 28 March 1978 ABSTRACT Sufficient conditions are determined for the

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George F. Carnevale, Fabio Cavallini, and Fulvio Crisciani

flow through the boundary, which implies ψ = 0 on the boundary. The appearance of the lateral diffusion term requires an additional boundary condition, and there are several possibilities that are often discussed and are referred to as dynamic boundary conditions. Pedlosky (1996) considers four: no-slip ∂ ψ /∂ n = 0, free-slip (or stress free) ζ = 0, super-slip ∂ ζ /∂ n = 0, and hyper-slip ∂( ζ + βy )/∂ n = 0, where ∂/∂ n = n  · ∇, and n is the outward normal on the boundary. Note

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October 1971 767UDC 551.515.21:551.509.313THE RESPONSE OF A TROPICAL CYCLONE MODEL TO VARIATIONS IN BOUNDARY LAYER PARAMETERS, INITIAL CONDITIONS, LATERAL BOUNDARY CONDITIONS, AND DOMAIN SIZE STANLEY L. ROSENTHALNational Hurricane Research Laboratory, Environmental Research Laboratories, NOAA, Miami, Fla.ABSTRACT Tropical cyclone model experiments are summarized in which the drag coefficient and the analogous exchangecoefficients for sensible and latent heat are varied

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Robert A. Pearson

VOL. 31, NO. 6 JOURNAL OF THE ATMOSPHERIC SCIENCES SEPTEMBER 1974Consistent Boundary Conditions for Numerical Models of Systems that Admit Dispersive Waves~ ROBERT A. PEARSON2Rosenstiel School of Marine and A tmospherlc Science, University of Miami, Coral Gables, Fla. 33124(Manuscript received 19 February 1974, in revised form 3 May 1970,)ABSTRACT In numerical computation it is often

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Wanli Wu, Amanda H. Lynch, and Aaron Rivers

interface plays a fundamental role in most mesoscale circulations. The global analysis and global model output themselves contain biases. Interpolations are usually required to preprocess the global data onto regional model grids. The resulting inaccuracies pass through the mesh interface and have the potential to penetrate into the interior of the regional model domain. The accuracy of regional model simulations is then limited by the accuracy of the initial and lateral boundary conditions obtained

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Martin Hoerling, James Hurrell, Arun Kumar, Laurent Terray, Jon Eischeid, Philip Pegion, Tao Zhang, Xiaowei Quan, and TaiYi Xu

aforementioned studies in that we estimate the statistics of decadal North American climate that are consistent with various plausible scenarios of boundary conditions, whereas most other studies to date have followed an ensemble of integrations from a specific, observed initial state. Our forecast is thus constrained solely by the signal associated with the expected change in boundary conditions related to future anthropogenic greenhouse gas (GHG) forcing. A probabilistic decadal prediction is generated

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Talmor Meir, Julie Pullen, Alan F. Blumberg, Teddy R. Holt, Paul E. Bieringer, and George Bieberbach Jr.

Research (NCAR). The surface boundary conditions and presence of urban land characteristics are specified as high-density residential land use in the Noah land-surface model ( Liu et al. 2006 ). The NAM forecasting system outputs 3-hourly fields on a 25 × 23 grid. NAM has 39 vertical sigma levels, with 10 levels in the lower 1200 m of the atmosphere. b. Meteorological station data The Optical Remote Sensing Laboratory of The City College of New York aggregates meteorological observations at high

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