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RISA Time Marching Integration for Semianalytical Solutions of Nonlinear Oscillators Based on Synchronization
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: An efficient method is proposed in this study for solving the semi-analytical solutions of periodic responses of nonlinear oscillators. The basic ideas come from the fact that any periodic response can be described by ...
A Second-Order Scheme for Nonlinear Fractional Oscillators Based on Newmark-β Algorithm
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an accurate and efficient hybrid solution method, based on Newmark-β algorithm, for solving nonlinear oscillators containing fractional derivatives (FDs) of arbitrary order. Basically, this method employs ...
Time-Dependent Decay Rate and Frequency for Free Vibration of Fractional Oscillator
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper presents an investigation on the free vibration of an oscillator containing a viscoelastic damping modeled by fractional derivative (FD). Based on the fact that the vibration has slowly changing decay rate and ...
A Polarized Delta-Four-Stream Approximation for Infrared and Microwave Radiative Transfer: Part I
Publisher: American Meteorological Society
Abstract: The delta-four-stream polarized (vector) thermal radiative transfer has been formulated and numerically tested specifically for application to satellite data assimilation in cloudy atmospheres. It is shown that for thermal ...
Effect of Cloud Types on the Earth Radiation Budget Calculated with the ISCCP Cl Dataset: Methodology and Initial Results
Publisher: American Meteorological Society
Abstract: A method is introduced to derive cloud effects on the earth radiation budget. The ISCCP Cl cloud data for daylight cases are used in combination with a radiative transfer model to estimate the outgoing broadband radiative ...
An Efficient Analytical Method Based on Averaging and MemoryFree Principle for Variable Fractional Oscillators
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: It has been a difficult task to solve fractional oscillators analytically, especially when variableorder fractional derivatives (FDs) are included. The major difficulty consists in deriving analytical expressions for the ...
Assimilation of Satellite-Derived Skin Temperature Observations into Land Surface Models
Publisher: American Meteorological Society
Abstract: Land surface (or ?skin?) temperature (LST) lies at the heart of the surface energy balance and is a key variable in weather and climate models. In this research LST retrievals from the International Satellite Cloud Climatology ...
Land Surface Precipitation in MERRA-2
Publisher: American Meteorological Society
Abstract: AbstractThe Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), features several major advances from the original MERRA reanalysis, including the use, outside of high latitudes, of ...
Assessment of MERRA-2 Land Surface Hydrology Estimates
Publisher: American Meteorological Society
Abstract: AbstractThe MERRA-2 atmospheric reanalysis product provides global, 1-hourly estimates of land surface conditions for 1980?present at ~50-km resolution. MERRA-2 uses observations-based precipitation to force the land (unlike ...
Community Support and Transition of Research to Operations for the Hurricane Weather Research and Forecasting Model
Publisher: American Meteorological Society
Abstract: he Hurricane Weather Research and Forecasting Model (HWRF) is an operational model used to provide numerical guidance in support of tropical cyclone forecasting at the National Hurricane Center. HWRF is a complex multicomponent ...