Abstract: A multigrid finite-difference solver is developed for the Helmholtz equation on the sphere. The finite-difference grid resolution is constant in the latitudinal direction and variable in the longitudinal direction so as ...

Abstract: A novel UdwadiaKalaba approach for parallel manipulator dynamics analysis is presented. The approach segments a parallel manipulator system into several legsubsystems and the platform subsystem, which are connected by ...

Abstract: The monthly mean precipitation-air temperature (MMP-MMAT) relation over the United States has been examined by analyzing the observed MMP and MMAT during the period of 1931?87. The authors? main purpose is to examine the ...

Abstract: This study is intended to determine the spatially varying optimal time periods for calculating seasonal climate normals over the entire United States based on temperature data at 344 United States climate divisions during ...

Abstract: Quality analyses have been performed on a 21-yr record of monthly mean Northern Hemisphere extratropical 700-hPa height anomaly forecasts issued by the National Weather Service. A positive trend in skill noted a decade ago ...

Abstract: A long time series of monthly soil moisture data during the period of 1931?1993 over the entire U.S. continent has been created with a one-layer soil moisture model. The model is based on the water budget in the soil and ...

Abstract: xtreme weather events such as cold-air outbreaks (CAOs) pose great threats to human life and the socioeconomic well-being of modern society. In the past, our capability to predict their occurrences has been constrained by ...

Abstract: his study investigated monthly and annual reference evapotranspiration changes over southwestern China (SWC) from 1960 to 2012, using the Food and Agriculture Organization of the United Nations? report 56 (FAO-56) ...