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7 December 2022 Empirical orthogonal functions in heat contents of the World Ocean energetically active zones
A. A. Karakhanyan, S. I. Molodykh
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Proceedings Volume 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics; 123415W (2022) https://doi.org/10.1117/12.2644682
Event: 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 2022, Tomsk, Russia
Abstract
Based on data from the Met Office Hadley Centre, we studied variations in heat content of the upper active layer (UAL) at middle and high latitudes of the World Ocean using the method of empirical orthogonal functions (EOF). The maximum contribution to the UAL heat contents is provided by the first harmonic that refers to seasonal variations. We analyzed features of spatial distribution of the UAL heat content seasonal variations for the first few EOF modes. Meridional structures are descriptive of the first harmonic. One can observe the first vector maxima in the Atlantics south-western part and in the zone of its eastern coast, and in the Pacific north-western part. Differences in thermal regime between the Atlantics and Pacific western and eastern parts may be due to radiation heating and systems of warm currents. The second and third harmonics have zonal structures.
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A. A. Karakhanyan and S. I. Molodykh "Empirical orthogonal functions in heat contents of the World Ocean energetically active zones", Proc. SPIE 12341, 28th International Symposium on Atmospheric and Ocean Optics: Atmospheric Physics, 123415W (7 December 2022); https://doi.org/10.1117/12.2644682
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KEYWORDS
Temperature metrology
Signal analyzers
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