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RISGravity Wave Generation by a Three-Dimensional Thermal Forcing
Publisher: American Meteorological Society
Abstract: Thermal forcing is one of the mechanisms of wave generation in convection. Although it does not account for all the wave generation mechanisms, thermal forcing is a good proxy for estimating the gravity wave spectrum forced ...
Effects of Convective Momentum Transport on the Atmospheric Circulation in the Community Atmosphere Model, Version 3
Publisher: American Meteorological Society
Abstract: Transport of momentum by convection is an important process affecting global circulation. Owing to the lack of global observations, the quantification of the impact of this process on the tropospheric climate is difficult. ...
An Analysis of Gravity Wave Spectral Characteristics in Moist Baroclinic Jet–Front Systems
Publisher: American Meteorological Society
Abstract: his study investigates gravity wave spectral characteristics based on high-resolution mesoscale simulations of idealized moist baroclinic jet?front systems with varying degrees of convective instability, with the intent ...
Sustainability of Concrete Infrastructures
Publisher: American Society of Civil Engineers
Abstract: Sustainability of modern civil engineering structures is the broad objective of the present paper. Infrastructures should be designed and built to be used satisfactorily over longer life spans without collapse or deterioration ...
On the Momentum Budget of the Quasi-Biennial Oscillation in the Whole Atmosphere Community Climate Model
Publisher: American Meteorological Society
Abstract: This study documents the contribution of equatorial waves and mesoscale gravity waves to the momentum budget of the quasi-biennial oscillation (QBO) in a 110-level version of the Whole Atmosphere Community Climate Model. ...
Global Distributions of Tropospheric and Stratospheric Gravity Wave Momentum Fluxes Resolved by the 9-km ECMWF Experiments
Publisher: American Meteorological Society
Abstract: Based on 20-day control forecasts by the 9-km Integrated Forecasting System (IFS) at the European Centre for Medium-Range Weather Forecasts (ECMWF) for selected periods of summer and winter events, this study investigates ...
Characteristics of Gravity Waves from Convection and Implications for Their Parameterization in Global Circulation Models
Publisher: American Meteorological Society
Abstract: haracteristic properties of gravity waves from convection over the continental United States are derived from idealized high-resolution numerical simulations. In a unique modeling approach, waves are forced by a realistic ...
The Impact of Convection on ENSO: From a Delayed Oscillator to a Series of Events
Publisher: American Meteorological Society
Abstract: The NCAR Community Climate System Model, version 3 (CCSM3) exhibits persistent errors in its simulation of the El Niño?Southern Oscillation (ENSO) mode of coupled variability. The amplitude of the oscillation is too strong, ...
Toward a Physically Based Gravity Wave Source Parameterization in a General Circulation Model
Publisher: American Meteorological Society
Abstract: Middle atmospheric general circulation models (GCMs) must employ a parameterization for small-scale gravity waves (GWs). Such parameterizations typically make very simple assumptions about gravity wave sources, such as ...
Generation and Trapping of Gravity Waves from Convection with Comparison to Parameterization
Publisher: American Meteorological Society
Abstract: Some parameterizations of gravity wave mean flow forcing in global circulation models (GCMs) add realism by describing wave generation by tropospheric convection. Because the convection in GCMs is itself a parameterized ...