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Plausibility of Substantial Dry Adiabatic Subsidence in a Tornado Core
Publisher: American Meteorological Society
Abstract: The question of whether or not the cores of some tornadoes are significantly warmed above the moist adiabatic temperature of their parent Cb by dry adiabatic subsidence is discussed in terms of limited supporting evidence ...
A Direct Method for Constructing Refined Regions in Unstructured Conforming Triangular–Hexagonal Computational Grids: Application to OLAM
Publisher: American Meteorological Society
Abstract: scheme is presented for constructing refined regions of 2D unstructured computational meshes composed of triangular cells. The method preserves the conforming property of the original unrefined mesh and does not produce ...
The Ocean–Land–Atmosphere Model (OLAM). Part II: Formulation and Tests of the Nonhydrostatic Dynamic Core
Publisher: American Meteorological Society
Abstract: The dynamic core of the Ocean?Land?Atmosphere Model (OLAM), which is a new global model that is partly based on the Regional Atmospheric Modeling System (RAMS), is described and tested. OLAM adopts many features of its ...
The Ocean–Land–Atmosphere Model (OLAM). Part I: Shallow-Water Tests
Publisher: American Meteorological Society
Abstract: The Ocean?Land?Atmosphere Model (OLAM) has been developed to extend the capabilities of the Regional Atmospheric Modeling System (RAMS) to a global model domain. OLAM adopts many features of its predecessor, including ...
Simulated Links between Deforestation and Extreme Cold Events in South America
Publisher: American Meteorological Society
Abstract: any modeling studies have indicated that deforestation will increase the average annual temperature in the Amazon. However, few studies have investigated the potential for deforestation to change the frequency and intensity ...
Effects of Deforestation on Spatiotemporal Distributions of Precipitation in South America
Publisher: American Meteorological Society
Abstract: his study investigates how future deforestation in the Amazon may alter precipitation statistics in South America using a variable-resolution GCM. The model?s grid mesh is set up to cover South America and nearby oceans ...
Elements of the Microphysical Structure of Numerically Simulated Nonprecipitating Stratocumulus
Publisher: American Meteorological Society
Abstract: A set of 500 simulated trajectories and a simple parcel model are used to (i) evaluate the performance of a large eddy simulation model coupled to a detailed representation of the droplet spectrum (the LES-BM model) and ...
Simulated Changes in Northwest U.S. Climate in Response to Amazon Deforestation
Publisher: American Meteorological Society
Abstract: umerical models have long predicted that the deforestation of the Amazon would lead to large regional changes in precipitation and temperature, but the extratropical effects of deforestation have been a matter of controversy. ...
Polynomial Fits to Saturation Vapor Pressure
Publisher: American Meteorological Society
Abstract: The authors describe eighth- and sixth-order polynomial fits to Wexler's and Hyland-Wexler's saturation-vapor-pressure expressions. Fits are provided in both least-squares and relative-error norms. Error analysis is ...
The Spurious Production of Cloud-Edge Supersaturations by Eulerian Models
Publisher: American Meteorological Society
Abstract: The production of anomalous supersaturations at cloud edges other than cloud base has presented a vexing challenge for modelers attempting to represent the evolution of a droplet spectrum across an Eulerian grid. Although ...