FN Archimer Export Format
PT J
TI Coherent dipoles in a mixed layer with variable buoyancy: Theory compared to observations
BT 
AF Lahaye, Noe
   Zeitlin, Vladimir
   Dubos, Thomas
AS 1:1;2:2,3;3:4;
FF 1:;2:;3:;
C1 Univ. Brest, CNRS, IRD, Ifremer, Laboratoire d’Oceanographie Physique et Spatiale (LOPS), IUEM, Brest, France
   LMD, Sorbonne University and Ecole Normale Superieure, 24 rue Lhomond, 75005 Paris, France
   Department of Mathematics, Southern University of Science and Technology, Shenzhen, China
   LMD, Ecole Polytechnique, 91128 Palaiseau, France
C2 CNES, FRANCE
   ENS, FRANCE
   UNIV SHENZHEN, CHINA
   ECOLE POLYTECH, FRANCE
UM LOPS
IN WOS Cotutelle UMR
   copubli-int-hors-europe
   copubli-sud
IF 3.686
TC 9
UR https://archimer.ifremer.fr/doc/00641/75311/75803.pdf
LA English
DT Article
DE ;Mixed layer;Vortex dipoles;Coherent structure
AB Motivated by recent observations of coherent dipolar cyclone-anticyclone structures in the ocean, the modons, and their signature in the surface temperature field, we demonstrate that the classical modon solutions of the barotropic quasi-geostrophic equations can be generalized to include buoyancy or temperature as an active tracer. The properties of such “thermal” modons, and especially their ability to carry heat anomaly over long distances, depend on the relative sign of the associated vorticity and buoyancy anomalies. We show using numerical simulations with the thermal shallow water equations, and their quasi-geostrophic version, that the evolution of the modons is consistent with the observations. 
PY 2020
PD SEP
SO Ocean Modelling
SN 1463-5003
PU Elsevier BV
VL 153
UT 000564119200002
DI 10.1016/j.ocemod.2020.101673
ID 75311
ER

EF