SWhat changed
A continuous vertical-shear atmosphere can generate growing long waves; the paper connects a constrained stability eigenproblem to wave speed, thermal asymmetry and near-onset vertical structure.
Scientific scope
A continuous vertical-shear atmosphere can generate growing long waves; the paper connects a constrained stability eigenproblem to wave speed, thermal asymmetry and near-onset vertical structure. Small linear disturbances of an adiabatic compressible hydrostatic midlatitude zonal current; curvature neglected, meridional-independent perturbations with background coefficients evaluated at a mean latitude, prescribed lapse rate and continuous vertical shear. Ground impermeability, vanishing upper momentum and tropopause matching imposed. Slow-wave inequalities filter acoustic/shearing-gravity components and imply approximate meridional geostrophy. Further mean-temperature and continued-shear simplifications support graphical stability curves; unstable-wave speed/structure uses a near-critical expansion, not an unrestricted exact solution. Original 138–139/158 flags unrealistic upper-level extrema, unresolved frontal coupling, unfinished tropical extension and schematic values valid only in order of magnitude. Seasonal weather comparisons are not held-out forecast skill or proof for every real cyclone. exact equations, plotted curves and tables not independently certified/replayed. No nonlinear saturation, later Eady theory or numerical forecast implementation absorbed.
Evidence
Source-linked, scoped account of the original work. The published scope states the scientific assumptions and remaining verification limits. WRS has not independently certified the full proof, experimental result or system benchmark.
Contributors
- J. G. Charney · SCIENCE: Original source-listed scientific author of this scoped work; byline does not determine effort fractions.
Provisional WRS assessment, edition 2026-10-16.1. Independent expert calibration is pending. This grade does not certify correctness or assign ownership.
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