500 mb geopotential height spectral peaks in the 1- to 5-week range

Juhani Rinne; Annakaisa Sarkanen

doi:10.3402/tellusa.v37i4.11676

500 mb geopotential height spectral peaks in the 1- to 5-week range

Tellus

Volume 37 (1985): Issue 4

By: Juhani Rinne and Annakaisa Sarkanen

Open Access

|Jan 1985

Abstract

Spectral peaks in the range of 1 to 5 weeks are computed from the empirical orthogonal functions of the 500 mb geopotential height, 1946–79. The maximum entropy method is employed. The problems of the method are discussed. A number of peaks are found. Tentative explanations in terms of various Rossby modes may be offered as follows: 16, 5 and 4.5-4 day peaks as symmetric modes, 9 and 7 day peaks as antisymmetric modes and the 2.5 day peak as a Rossby-gravity mode. No explanation for 3, 6, 12 and approximately 30-day peaks are proposed. The 30-day peak is often the most dominant peak in the spectra in which it occurs.

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Articles in this issue

DOI: https://doi.org/10.3402/tellusa.v37i4.11676 | Journal eISSN: 3035-9554

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Language: English

Page range: 323 - 335

Submitted on: Feb 9, 1984

Accepted on: Mar 5, 1985

Published on: Jan 1, 1985

Published by: Stockholm University Press

In partnership with: Paradigm Publishing Services

© 1985 Juhani Rinne, Annakaisa Sarkanen, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.

Volume 37 (1985): Issue 4