TY - JOUR

T1 - Interaction of the Lofoten Vortex with a Satellite Cyclone

AU - Belonenko, T. V.

AU - Zinchenko, V. A.

AU - Fedorov, A. M.

AU - Budyansky, M. V.

AU - Prants, S. V.

AU - Uleysky, M. Yu

N1 - Funding Information: The authors acknowledge the support of the Russian Science Foundation (RSF, Project no. 18-17-00027). We thank Copernicus Marine Environment Monitoring Service for providing GLORYS12V1 product as well as Aviso User Service for “Mesoscale Eddy Trajectory Atlas Product”. The work of MVB, SVP, and MYuU on Lagrangian simulation was supported by the Russian Foundation for Basic Research (RFBR, Project no. 20-05-00124 A). Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/1/1

Y1 - 2021/1/1

N2 - The Lagrangian-particles simulation in the Lofoten Basin area in the Norwegian Sea, based on the GLORYS12V1 reanalysis for the period from 2016-05-31 to 2016-06-28, was used to track the vortex pair consisting of the large quasi-permanent Lofoten Vortex (LV) and a cyclone generated nearby the LV. We show that the cyclone is a part of a shield around the LV. The core of the cyclone is partly located inside the LV. This structure forms an uneven vortex pair. We provide a complementary analysis of Lagrangian maps with temperature, salinity, and relative vorticity at 75 horizons from the surface to the bottom, consider the evolution of the vortex pair and obtain its characteristics. The cyclone moves around the LV passing along its periphery 348.97 km with a speed of 14 cm/s, which is comparable 23 cm/s, the orbital velocity of the LV during the study period. The orbital velocity of the satellite cyclone is 15 cm/s. The mean amplitude of the LV in the period from 2016-05-31 to 2016-06-28 is 12.50 cm, and the mean amplitude of the satellite cyclone for the same period is − 2.92 cm. The average radius of the LV is 57.48 km and 13.42 km for its satellite cyclone. The orbital velocities of the LV and its satellite cyclone (with their mean values of amplitude and radii) are 0.23 m/s and 0.15 m/s, respectively. The average integral (in a volume) relative vorticity of the eddies in the vortex pair is − 1.41 × 1018 c−1 for the LV and 3.19 × 109 c−1 for the satellite cyclone.

AB - The Lagrangian-particles simulation in the Lofoten Basin area in the Norwegian Sea, based on the GLORYS12V1 reanalysis for the period from 2016-05-31 to 2016-06-28, was used to track the vortex pair consisting of the large quasi-permanent Lofoten Vortex (LV) and a cyclone generated nearby the LV. We show that the cyclone is a part of a shield around the LV. The core of the cyclone is partly located inside the LV. This structure forms an uneven vortex pair. We provide a complementary analysis of Lagrangian maps with temperature, salinity, and relative vorticity at 75 horizons from the surface to the bottom, consider the evolution of the vortex pair and obtain its characteristics. The cyclone moves around the LV passing along its periphery 348.97 km with a speed of 14 cm/s, which is comparable 23 cm/s, the orbital velocity of the LV during the study period. The orbital velocity of the satellite cyclone is 15 cm/s. The mean amplitude of the LV in the period from 2016-05-31 to 2016-06-28 is 12.50 cm, and the mean amplitude of the satellite cyclone for the same period is − 2.92 cm. The average radius of the LV is 57.48 km and 13.42 km for its satellite cyclone. The orbital velocities of the LV and its satellite cyclone (with their mean values of amplitude and radii) are 0.23 m/s and 0.15 m/s, respectively. The average integral (in a volume) relative vorticity of the eddies in the vortex pair is − 1.41 × 1018 c−1 for the LV and 3.19 × 109 c−1 for the satellite cyclone.

KW - cross-sections

KW - Lagrangian maps

KW - Lagrangian modelling

KW - Lofoten Basin

KW - modon

KW - quasi-permanent Lofoten Vortex

KW - riders

KW - satellite cyclone

KW - vortex interaction

KW - MESOSCALE EDDIES

KW - CONVECTION

KW - SEA

KW - VERTICAL VELOCITY

KW - DYNAMICS

KW - BASIN

UR - http://www.scopus.com/inward/record.url?scp=85099081078&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/10fc5548-f4a4-315c-a535-e29d57331fc5/

U2 - 10.1007/s00024-020-02647-1

DO - 10.1007/s00024-020-02647-1

M3 - Article

AN - SCOPUS:85099081078

VL - 178

SP - 287

EP - 300

JO - Pure and Applied Geophysics

JF - Pure and Applied Geophysics

SN - 0033-4553

IS - 1

ER -