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Large-Scale Dynamics and Global Warming
Publisher: American Meteorological Society
Abstract: Predictions of future climate change raise a variety of issues in large-scale atmospheric and oceanic dynamics. Several of these are reviewed in this essay, including the sensitivity of the circulation of the Atlantic Ocean ...
Westward Propagating Normal Modes in the Presence of Stationary Background Waves
Publisher: American Meteorological Society
Abstract: Eigenvectors and eigenvalues of the nondivergent barotropic vorticity equation linearized about zonally asymmetric wintertime mean flows are calculated to determine which barotropic modes might contribute to westward ...
New Conservation Laws for Linear Quasi-Geostrophic Waves in Shear
Publisher: American Meteorological Society
Abstract: There exists an infinite set of quadratic conserved quantities for linear quasi-geostrophic waves in horizontal and vertical shear, the first two members of the set corresponding to the pseudomomentum and pseudo-energy ...
The Gap between Simulation and Understanding in Climate Modeling
Publisher: American Meteorological Society
Abstract: The problem of creating truly convincing numerical simulations of our Earth's climate will remain a challenge for the next generation of climate scientists. Hopefully, the ever increasing power of computers will make this ...
Pseudomomentum and the Orthogonality of Modes in Shear Flows
Publisher: American Meteorological Society
Abstract: Linear modes on shear flows are not orthogonal in the sense of energy; if two modes are present, the eddy energy is not equal to the sum of the eddy energy in the separate modes. However, linear modes are orthogonal in the ...
Momentum Transport by Quasi-Geostrophic Eddies
Publisher: American Meteorological Society
Abstract: Some results due to Kuo concerning momentum fluxes in barotropic flows are generalized so as to apply to quasi-geostrophic flows on a beta-plane. It is shown that linear, amplifying waves on an arbitrary zonal flow cause ...
The Tropospheric Lapse Rate and Climatic Sensitivity: Experiments with a Two-Level Atmospheric Model
Publisher: American Meteorological Society
Abstract: The sensitivity of both moist and dry versions of a two-level primitive equation atmospheric model to variations in the solar constant is analyzed. The models have fixed surface albedos, fixed cloudiness and a zero heat ...
The Vertical Scale of an Unstable Baroclinic Wave and Its Importance for Eddy Heat Flux Parameterizations
Publisher: American Meteorological Society
Abstract: Linear, quasi-geostrophic waves destabilized by a surface temperature gradient produce eddy potential vorticity fluxes which characteristically extend above the surface to a height where the vertical shear ?u?/?z, static ...
100 Years of Progress in Understanding the General Circulation of the Atmosphere
Publisher: American Meteorological Society
Abstract: AbstractSome of the advances of the past century in our understanding of the general circulation of the atmosphere are described, starting with a brief summary of some of the key developments from the first half of the ...
The Partitioning of the Poleward Energy Transport between the Tropical Ocean and Atmosphere
Publisher: American Meteorological Society
Abstract: The mass transport in the shallow, wind-driven, overturning cells in the tropical oceans is constrained to be close to the mass transport in the atmospheric Hadley cell, assuming that zonally integrated wind stresses on ...