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February 5, 2026Australian meteorological magazine

Energy spectra within cut-off low regimes

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Authors

DBD. J. Beaumont

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Overview

Measures kinetic energy spectra in two cut-off low situations, indicating the significance of wavelength resolution.

Key Points

  • The aim is to analyze the kinetic energy structure in cut-off low situations using numerical filtering techniques.
  • Applied numerical filtering technique to 500 mb geopotential height fields.
  • Filtered data in east-west and north-south directions.
  • Extracted spectral data for u and v components of wind.
  • Compiled results into kinetic energy diagrams for better visualization.
  • Presented four kinetic energy diagrams for each cut-off low situation.
  • Diagrams showcase the kinetic energy spectral density distribution based on position and wavenumber.
  • Quantitative results indicate the need to resolve wavelengths of 1200 nautical miles or less for accurate analysis.

Cite This Study

D. J. Beaumont (1970) studied this question.

synapsesocial.com/papers/69843543f1d9ada3c1fb3d38https://doi.org/10.1071/es70014
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