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Moisture Modes and the Madden–Julian Oscillation
Publisher: American Meteorological Society
Abstract: Moisture mode instability is thought to occur in the tropical oceanic atmosphere when precipitation is a strongly increasing function of saturation fraction (precipitable water divided by saturated precipitable water) and ...
Large-Scale Modes of a Nonrotating Atmosphere with Water Vapor and Cloud–Radiation Feedbacks
Publisher: American Meteorological Society
Abstract: A minimal model of a moist equatorial atmosphere is presented in which the precipitation rate is assumed to depend on just the vertically averaged saturation deficit and the convective available potential energy. When ...
Large-Scale Modes in a Rotating Atmosphere with Radiative–Convective Instability and WISHE
Publisher: American Meteorological Society
Abstract: A highly simplified parameterization of diabatic processes is applied to linearized equations on a equatorial beta plane. The diabatic processes include moist convection, cloud?radiation interactions (CRI), and wind-induced ...
Effects of Varying the Shape of the Convective Heating Profile on Convectively Coupled Gravity Waves and Moisture Modes
Publisher: American Meteorological Society
Abstract: he analytical model of convectively coupled gravity waves and moisture modes of Raymond and Fuchs is extended to the case of top-heavy and bottom-heavy convective heating profiles. Top-heavy heating profiles favor gravity ...
Convectively Coupled Kelvin Waves: From Linear Theory to Global Models
Publisher: American Meteorological Society
Abstract: he authors analyze composite structures of tropical convectively coupled Kelvin waves (CCKWs) in terms of the theory of Raymond and Fuchs using radiosonde data, 3D analysis and reanalysis model output, and annual integrations ...
Frictional Convergence in a Decaying Weak Vortex
Publisher: American Meteorological Society
Abstract: ross-isobaric flow and Ekman pumping are investigated in the frictional spindown of an initially barotropic vortex in a stratified atmosphere. Consistent with early work by Holton and others, it is found that the stratification ...
Convective Forcing in the Intertropical Convergence Zone of the Eastern Pacific
Publisher: American Meteorological Society
Abstract: One of the goals of the East Pacific Investigation of Climate, year 2001 process study (EPIC2001), was to understand the mechanisms controlling the forcing of deep atmospheric convection over the tropical eastern Pacific. ...
The Risks of Contracting the Acquisition and Processing of the Nation’s Weather and Climate Data to the Private Sector
Publisher: American Meteorological Society