Article (Scientific journals)
On the behaviour of the residence time at the bottom of the mixed layer
Deleersnijder, Eric; Beckers, Jean-Marie; Delhez, Eric
2006In Environmental Fluid Mechanics, 6 (6), p. 541-547
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Keywords :
mixed mayer; pycnocline; residence time; adjoint model
Abstract :
[en] To understand why the findings of Deleersnijder et al. [(2006), Environ Fluid Mech 6: 25-42]-the residence time in the mixed layer in not necessarily zero at the pycnocline-are consistent with those of Delhez and Deleersnijder [(2006), Ocean Dyn 56:139-150]-the residence time in a control domain vanishes at the open boundaries of this control domain-, it is necessary to consider a control domain that includes part of the pycnocline, in which the eddy diffusivity is assumed to be zero. Then, depending on the behaviour of the eddy diffusivity near the bottom of the mixed layer, the residence time may be seen to exhibit a discontinuity at the interface between the mixed layer and the pycnocline. If such a discontinuity exists, the residence time is non-zero in the former and zero in the latter. This is illustrated by analytical solutions obtained under the assumption that the eddy diffusivity is constant in the mixed layer.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Environmental sciences & ecology
Earth sciences & physical geography
Author, co-author :
Deleersnijder, Eric
Beckers, Jean-Marie  ;  Université de Liège - ULiège > Département d'astrophys., géophysique et océanographie (AGO) > Océanographie physique
Delhez, Eric ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Mathématiques générales
Language :
English
Title :
On the behaviour of the residence time at the bottom of the mixed layer
Publication date :
2006
Journal title :
Environmental Fluid Mechanics
ISSN :
1567-7419
eISSN :
1573-1510
Publisher :
Springer Science & Business Media B.V., Dordrecht, Netherlands
Volume :
6
Issue :
6
Pages :
541-547
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 18 December 2008

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