Abstract
This article discusses the possibilities of using the method of projection operators to analyze the results of observations of atmospheric parameters in order to isolate the contributions of planetary Rossby and Poincaré waves. In the upper atmosphere, planetary-scale wave disturbances are recorded during periods of geomagnetic disturbances and powerful dynamic processes in the lower atmosphere, such as hurricanes, meteorological storms, and sudden stratospheric warming. The method of projection operators expands the possibilities of analyzing such disturbances of the atmospheric parameters, making it possible to determine the amplitude characteristics of planetary waves, as well as their spatial and time scales. This paper presents a procedure for the derivation of finite-difference projection operators, which can be applied to the analysis of the time series of observations performed by individual stations. The results of the test studies of projection operators with an estimate of the accuracy of determining the characteristics of the Rossby and Poincaré waves are presented.
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This study was supported by the Russian Foundation for Basic Research, project no. 18-05-00184.
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Klopova, A.I., Leble, S.B. & Karpov, I.V. Projection Operators for Identification of Rossby and Poincaré Planetary Waves in the Atmosphere. Russ. J. Phys. Chem. B 15, 572–576 (2021). https://doi.org/10.1134/S1990793121030064
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DOI: https://doi.org/10.1134/S1990793121030064