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RISEffects of Horizontal Geometrical Spreading on the Parameterization of Orographic Gravity Wave Drag. Part I: Numerical Transform Solutions
Publisher: American Meteorological Society
Abstract: umerical transform solutions for hydrostatic gravity waves generated by both uniform and sheared flow over elliptical obstacles are used to quantify effects of horizontal geometrical spreading on amplitude evolution with ...
Long-Term Changes in Ice Phenology of the Yellow River in the Past Decades
Publisher: American Meteorological Society
Abstract: The authors quantitatively describe the changes in the characteristics of ice phenology including the flow rate and freeze/breakup dates of the Yellow River based on observations of the past 50 yr. In both the upper and ...
Fourier-Ray Modeling of Transient Trapped Lee Waves
Publisher: American Meteorological Society
Abstract: The Fourier-ray method involves ray tracing in a Fourier-transform domain. The ray solutions are then Fourier synthesized to produce a spatial solution. Here previous steady-state developments of the Fourier-ray method are ...
Global Oceanic Precipitation Derived from TOPEX and TMR: Climatology and Variability
Publisher: American Meteorological Society
Abstract: A detailed study on global oceanic precipitation is carried out using the simultaneous TOPEX and TMR (TOPEX Microwave Radiometer) data. It is motivated by the success of a series of feasibility studies based on a few years ...
Fourier-Ray Modeling of Short-Wavelength Trapped Lee Waves Observed in Infrared Satellite Imagery near Jan Mayen
Publisher: American Meteorological Society
Abstract: A time-dependent generalization of a Fourier-ray method is presented and tested for fast numerical computation of high-resolution nonhydrostatic mountain-wave fields. The method is used to model mountain waves from Jan ...
Sensitivity of On-Skin Thermometry to Detecting Dermal Dehydration
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The recent development of flexible sensors that can measure temperatures at the surface of the skin opens novel possibilities for continuous health monitoring. Here, we investigate such sensors as 3ω thermometers to ...
Mesoscale Model Initialization of the Fourier Method for Mountain Waves
Publisher: American Meteorological Society
Abstract: A Fourier method is combined with a mesoscale model to simulate mountain waves. The mesoscale model describes the nonlinear low-level flow and predicts the emerging wave field above the mountain. This solution serves as ...
Stratospheric Analysis and Forecast Errors Using Hybrid and Sigma Coordinates
Publisher: American Meteorological Society
Abstract: ast investigations have documented large divergent wind anomalies in stratospheric reanalyses over steep terrain, which were attributed to discretization errors produced by the terrain-following (sigma) vertical coordinate ...
Momentum Fluxes of Gravity Waves Generated by Variable Froude Number Flow over Three-Dimensional Obstacles
Publisher: American Meteorological Society
Abstract: Fully nonlinear mesoscale model simulations are used to investigate the momentum fluxes of gravity waves that emerge at a ?far-field? height of 6 km from steady unsheared flow over both an axisymmetric and elliptical ...
Experimental Study on Comprehensive Performance of Sintering Biporous Wicks Prepared by Salt Dissolution and Cold Pressing Process
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Porous wicks are a key component of loop heat pipes (LHPs). In order to enhance the antigravity and long-distance operation ability of the LHP, a porous wick is required to have the characteristics of high permeability and ...