Gradient adjustment in an axisymmetric vortex

Includes bibliographical references (page 47).Fall 1978.We consider gradient adjustment in an axisymmetric vortex. From an initially unbalanced state, the final adjusted state is obtained. Initially, the geopotential is flat and the velocity field is given by the Rankine vortex. (Note: To view the equation, open the pdf of the document.) We derive a system of equations governing the final adjusted state. This system of equations is solved numerically using the shooting method. We also present solutions for the geostrophic adjustment problem and compare these to the solutions for the gradient adjustment problem. In the gradient adjustment case, the results indicate that (i) the geopotential decrease at the centre is proportional to E/a. (ii) the decrease of the maximum tangential wind is dependent on E for smaller a (a is less than 1). For a greater or equal to 1, the decrease is independent of E. (iii) the stretching is proportional to E/a. (iv) the mass removed from within a given region tends to E for large r. Comparison between the solutions for the geostrophic and gradient adjustment problems shows significant differences for small a.Partially sponsored by the Government of Guyana and the National Science Foundation - ATM76-09370.Partially sponsored by the Government of Guyana and the National Science Foundation - ATM78-08125

Experiments with a spectral tropical cyclone model

July, 1983.Includes bibliographical references.Sponsored by the National Science Foundation ATM-8207563.Sponsored by the Office of Naval Research N00014-83-K-0068

Cumulus parameterization theory in terms of feedback and control

June 1974.Includes bibliographical references.Sponsored by NSF GA-33182

Design and execution of the marine stratocumulus experiment

September 1976.Includes bibliographical references (pages 70-74).Sponsored by the GARP Section of the Office ofClimate Dynamics, National Science Foundation ATM 76-09370.Sponsored by the GARP Section of the Office ofClimate Dynamics, National Science Foundation OCD 74-21678.Sponsored by the National Aeronautics and Space Administration GA 31588.Sponsored by the National Center for Atmospheric Research

Role of convective-scale processes in tropical cyclone development, The

December, 1980.Includes bibliographical references.Presents an eighteen-level axisymmetric primitive equation tropical cyclone model incorporating the Arakawa-Schubert (1974) spectral cumulus parameterization.Sponsored by the National Science Foundation under grant ATM-7808125 and the Office of Naval Research N00014-79-C-0793

Numerical simulation of eastern north Pacific stratocumulus

July, 1978.Includes bibliographical references.Sponsored by National Science Foundation ATM 76-09370.Sponsored by the GARP Section of the Office of Climate Dynamics

Design of an axisymmetric primitive equation tropical cyclone model

December 1976.Includes bibliographical references (pages 67-69).Sponsored by the Global Atmospheric Research Program, Climate Dynamics Research Section, National Science Foundation DES 74-11438.Sponsored by the Global Atmospheric Research Program, Climate Dynamics Research Section, National Science Foundation ATM 76-09370.Sponsored by the Global Atmospheric Research Program, Climate Dynamics Research Section, National Science Foundation OCD 74-21678