Russian Journal of Earth Sciences

1681-1208

51042

10.2205/2022ES000786

ОРИГИНАЛЬНЫЕ СТАТЬИ

ORIGINAL ARTICLES

ОРИГИНАЛЬНЫЕ СТАТЬИ

Seasonal variability of the potential vorticity in the Lofoten vortex

Novoselova

Elena

Novoselova

Elena

Saint Petersburg State University Санкт-Петербург Россия Saint Petersburg State University St. Petersburg Russian Federation

02 07 2022

22 3 1 16 12 01 2022 22 02 2022

https://rjes.ru/en/nauka/article/51042/view

The anticyclonic quasi-permanent Lofoten vortex is a strong dynamic formation in the center of the Lofoten Basin in the Norwegian Sea. We used the oceanic reanalysis data GLORYS12V1. We analyzed a seasonal distribution of the relative and potential vorticity, as well as the orbital velocities and the potential density in the Lofoten vortex. The main points of the potential vorticity calculating are considered. The values of the Lofoten vortex volume, the horizontal dimension (the diameter) as well as the vertical scale for the period from 2000 to 2019 are obtained, as well as the method for estimates of these characteristics is described in detail. It was shown that the intensification of the vortex occurs in the summer, and its relaxation -- in the winter.

North Atlantic Norwegian sea Lofoten basin Lofoten vortex potential vorticity relative vorticity

The authors acknowledge the support of the Russian Science Foundation (RSF, project No. 22-27-00004).

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