During the winters of 2013-2014 and 2014-2015, anomalously warm temperatures in western North America and anomalously cool temperatures in eastern North America resulted in substantial human and environmental impacts. Motivated by the impacts of these concurrent temperature extremes and the intrinsic atmospheric linkage between weather conditions in the western and eastern United States, we inv...

systems in which reaction terms are coupled to diffusion and advection transports arise in awide range of chemical engineering applications, physics, biology and environmental. in these cases, thecomponents of the unknown can denote concentrations or population sizes which represent quantities andthey need to remain positive. classical finite difference schemes may produce numerical drawbacks s...

A number of significant annual weather variables are known to be critical to the quantity and quality of vineyard harvest. In rain-fed viticulture regions for example, most quality wines are produced in areas where the annual precipitation is below 700 to 800 mm (Jackson and Shuster, 1987; Galet, 1993). Indeed, barring any moisture stress to the vine, a warm, dry growing season is generally ass...

We have tested four newly developed 3D advection schemes named Mol-rg, Split-u, Split-us and Split-rg. We compared these schemes with Slopes and Second Moment. Mol-rg and Split-rg make use of a reduced grid, a grid with less cells near the poles, to overcome the well known pole-singularity. Two tests were performed with all schemes: the solid-body rotation test and a radon test. The radon test ...

A hardware-based approach for visualizing unsteady flow fields by means of Lagrangian-Eulerian advection is presented. Both noise-based and dyebased texture advection is supported. The implementation allows the advection of each texture to be performed completely on the graphics hardware in a single-pass rendering. We discuss experiences with the interactive visualization of unsteady flow field...

This study investigates the origin of a commonly observed feature in the O3 profiles: mid tropospheric O3 maxima (300–500 hPa) over the tropical Indian Ocean. A comparison and analysis of model simulations, using a 3-D global climate-chemistry model, and measured O3 profiles from the INDOEX campaign is presented. European Centre for Medium-Range Weather Forecast (ECMWF) meteorological analyses ...

A strong relationship is observed between synoptic weather systems and atmospheric forcing of the ocean as estimated from buoy measurements made on the North Carolina inner shelf during August and October-November 1994 as part of the Coastal Ocean Processes (COOP) Inner Shelf Study. Synoptic variation (timescales of days to weeks) in the meteorological time series was primarily associated with ...

The Dynamics of the Madden–Julian Oscillation (DYNAMO) field campaign was conducted over the Indian Ocean (IO) from October 2011 to February 2012 to investigate the initiation of the Madden–Julian oscillation (MJO). Three MJOs accompanying westerly wind events (WWEs) occurred in late October, late November, and late December 2011. Momentum budget analysis is conducted to understand the contribu...