Imperial College London
Alternate

ProfessorPavelBerloff

Faculty of Natural Sciences, Department of Mathematics

Professor in Applied Mathematics
 
 
 
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Contact

 

+44 (0)20 7594 9662p.berloff Website

 
 
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Location

 

745Huxley BuildingSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Haigh:2021:10.1016/j.ocemod.2021.101845,
author = {Haigh, M and Sun, L and McWilliams, JC and Berloff, P},
doi = {10.1016/j.ocemod.2021.101845},
journal = {Ocean Modelling},
pages = {1--17},
title = {On eddy transport in the ocean. Part II: The advection tensor},
url = {http://dx.doi.org/10.1016/j.ocemod.2021.101845},
volume = {165},
year = {2021}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - This study considers the isopycnal eddy transport of mass and passive tracers in eddy-resolving doublegyre quasigeostrophic oceanic circulation. Here we focus on advective transport, whereas a companion paperfocuses on eddy-induced diffusive tracer transport. To work towards parameterising eddy tracer transport wequantify the eddy tracer flux using a transport tensor with eddies defined using a spatial filter, which leadsto results distinct from those obtained via a temporal Reynolds eddy decomposition. The advection tensoris the antisymmetric part of the transport tensor, and is so named since the associated tracer transport canbe expressed as advection of the large-scale tracer field by a rotational eddy-induced velocity (EIV) ∗ withstreamfunction . The EIV ∗is fastest (∼ 1 m s−1) where eddy activity is strongest, e.g., in the upper layer,near the eastward jet and western boundary current. Our results suggest that a stochastic closure for the eddytransport would be most suitable since  exhibits a probabilistic distribution when conditioned on, for example,the large-scale relative vorticity. Consistent with closures in ocean circulation models, we quantify eddy mass(isopycnal layer thickness) fluxes as eddy-induced advection by the thickness EIV ∗. The divergent part of∗– the only part relevant for mass transport in the quasigeostrophic limit – tends to be oriented down thethickness gradient suggesting it quantifies some baroclinic eddy effects similar to those parameterised by theGent & McWilliams (GM90) EIV. Although ∗has some qualitative similarities to ∗, our results suggest thateddy-induced tracer advection is driven by more than just the thickness-determined EIV and, in turn, morethan just the GM90 EIV.
AU  - Haigh,M
AU  - Sun,L
AU  - McWilliams,JC
AU  - Berloff,P
DO  - 10.1016/j.ocemod.2021.101845
EP  - 17
PY  - 2021///
SN  - 1463-5003
SP  - 1
TI  - On eddy transport in the ocean. Part II: The advection tensor
T2  - Ocean Modelling
UR  - http://dx.doi.org/10.1016/j.ocemod.2021.101845
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000686747000003&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.sciencedirect.com/science/article/pii/S1463500321000974?via%3Dihub
UR  - http://hdl.handle.net/10044/1/91618
VL  - 165
ER  -
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