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RISA Multiconserving Discretization with Enthalpy as a Thermodynamic Prognostic Variable in Generalized Hybrid Vertical Coordinates for the NCEP Global Forecast System
Publisher: American Meteorological Society
Abstract: new vertical discretization used in the atmospheric dynamics of the National Centers for Environmental Prediction (NCEP) Global Forecast System (GFS) is illustrated, with enthalpy as the thermodynamic prognostic variable ...
A Reduced Spectral Transform for the NCEP Seasonal Forecast Global Spectral Atmospheric Model
Publisher: American Meteorological Society
Abstract: A reduced spectral transformation is applied to the NCEP atmospheric global spectral model for operational seasonal forecasts. The magnitude of the associated Legendre coefficient provides a basis for this new transformation, ...
Numerical Simulations of the Evolution of a Cold Front and Its Precipitation
Publisher: American Meteorological Society
Abstract: Short-range (36-h) simulations of a surface cold front that occurred over the Great Plains of the United States during the SESAME-AYE III period are made using a significantly modified version of a hydrostatic, sigma-coordinate, ...
The NCEP Mesoscale Spectral Model: A Revised Version of the Nonhydrostatic Regional Spectral Model
Publisher: American Meteorological Society
Abstract: This paper illustrates a modified nonhydrostatic version of the National Centers for Environmental Prediction regional spectral model (RSM). This nonhydrostatic version of the RSM can simulate atmospheric motions of all ...
An Eigensystem Realization Algorithm in Frequency Domain for Modal Parameter Identification
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper demonstrates the close conceptual relationships between time domain and frequency domain approaches to identification of modal parameters for linear systems. A frequency domain eigensystem ...
Bootstrapping for Characterizing the Effect of Uncertainty in Sample Statistics for Braced Excavations
Publisher: American Society of Civil Engineers
Abstract: A simple procedure for assessing the probability of serviceability failure in a braced excavation involving bootstrapping to characterize the effect of uncertainty in sample statistics is presented. Here, the failure is ...
A Multi-Point Force Appropriation Method Based Upon a Singular Value Decomposition Approach
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Force appropriation methods aim to provide an estimate for the force pattern required to excite a “pure” normal mode in a vibration test where multiple exciters are available. In this paper, ...
Discussion of “<i>Field Tests of Long‐Span Aluminum Culvert</i>” by David B. Beal (June, 1982)
Publisher: American Society of Civil Engineers
Air-Bearing Effects on Actuated Thermal Pole-Tip Protrusion for Hard Disk Drives
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Flying height (FH) control sliders with thermal actuation have been introduced recently in commercial products for compensating the static FH loss and reducing the risk of head-disk contacts. ...
CPT-Based Evaluation of Liquefaction Potential Accounting for Soil Spatial Variability at Multiple Scales
Publisher: American Society of Civil Engineers
Abstract: Understanding and assessing the spatial extent of liquefaction requires that the spatial dependence of soil properties to be taken into account. In this work, a cone penetration test (CPT)-based approach for the evaluation ...