[Mitgcm-support] U. Conn status, c35 NOPP/FRONT testing

[mitgcm-support at dev.mitgcm.org]

chris wrote:
> 
> Hi Chris E.,
> 
>  Your mail crossed with c35 by the looks of it!
> 
>  e.g.
>  http://mitgcm.org/download/
>    :
>    :
>  c35.tar.gz              08-Feb-2001 15:48   1.5M
> 
>  There were a couple of tests which took slightly
>  longer to check they were OK.
> 
>  Let us know how you get on with it.
>  What time will you be around Friday?
> 
> Chris H.
> John Marshall wrote:
> >
> > Chris,
> >
> > back from a great trip to New York - it's nice to be occasionally elated at
> > the reception to one's work. A rare occurrence!!
> >
> > So the Stonybrook people didn't seem too surprised by your result on the
> > formation of a front by tidal rectification with a barotropic model. By the
> > way, how's that short write-up going, or are you going to wait for the big
> > one in to JPO.
> >
> > I'll talk to Alistair about when release c35 will be available.
> >
> > We look to your visit this Friday.
> >
> > All the best,
> > John
> >
> > > -----Original Message-----
> > > From: cae at abyss.dms.uconn.edu [mailto:cae at abyss.dms.uconn.edu]On Behalf
> > > Of cae at socrates.Berkeley.EDU
> > > Sent: Thursday, February 08, 2001 10:06 AM
> > > To: John Marshall
> > > Subject: RE: plans
> > >
> > >
> > > John,
> > >
> > >   Things are going fine.  I gave a talk at Stonybrook yesterday
> > > on this work
> > > [it was not for a position there], and had some good feedback.
> > > The people there
> > > have backgrounds studying fronts of the coastal ocean, and were
> > > pleased to hear
> > > about the project as a whole and about the modeling of the frontal region.
> > >
> > >   They agreed that one of the interesting aspects of our region is the
> > > combination of strong tides and buoyancy forcing from the plume.  In
> > > contrast, most studies have in the past emphasized the dominance of one
> > > mechanism over another.  Sorting out the relative roles may be a
> > > challenge,
> > > but they thought that that is new.  Another point they agreed was
> > > interesting
> > > was the interaction of the tidal residual, and tidal advection on
> > > the cross
> > > frontal exchange.  I didn't mention this to you when we spoke
> > > last time, but
> > > this is the scientific area that I think is probably most unusual
> > > or novel about
> > > this study.  The front is to some extent a material barrier.
> > > You can imagine a vertical exchange (flow along the bottom, until
> > > mixing stirs fluid to the surface, at which point advection takes hold and
> > > returns fluid away from the mixing region).  On the other hand,
> > > I've found a
> > > horizontal exchange here, with a tidal residual circulation around block
> > > island, combined with a tidal flux (u'T')bar that leads to
> > > noticeable terms in
> > > the heat budget.  There are some numerical issues here that we
> > > can talk about,
> > > but I think this is probably robust, while speculated about for decades, I
> > > think the number of examples of it occuring are small.  Finally,
> > > they pointed to
> > > some interesting dynamical questions about the vorticity balance
> > > of tidal flow
> > > and its residual around the headland of Montauk Point.  I had assumed this
> > > structure (which I'll point out to you when I'm next up there)
> > > was well known
> > > and understood.  I've seen papers going back to 1978, and there
> > > seems to be a
> > > reasonable literature on it since.  It's possible there's
> > > something in that,
> > > perhaps especially with the 3 dimensional structure, but I'm
> > > skeptical.  Indeed
> > > one person thought it unlikely to make an O(1) contribution in
> > > the area of the
> > > dynamics of the residual flow.
> > >
> > >   I haven't yet got KPP working.  When I was up there last,
> > > Alistair suggested
> > > it was version c35 that I wanted to use, which he thought would
> > > be out in a day
> > > or two.  In fact, it's not out yet.  In the meantime, I've been
> > > moving forward
> > > instead on the inverse side.  Trying to hammer all the details of
> > > the processing
> > > stream and do a first hindcast given a mooring record from May
> > > 2000.  That's
> > > really what's underway right now.
> > >
> > >   So, we have funds for regular trips up there throughout the rest of the
> > > project, as we discussed.  I can make my next visit at the end of
> > > next week, I
> > > think.  I have been invited out to Scripps for a talk, but the
> > > date is as yet
> > > unscheduled.  If that turns out to be the week after next (which
> > > I think is
> > > unlikely), I would probably prefer to spend the time further
> > > focussing on and
> > > developing what we have rather than pressing forward.  But at
> > > this point, I'm
> > > planning to come up again next Friday.  You and I can discuss these
> > > topics of  interest and I'll want to talk with Alistair are KPP and the
> > > possibility of a flux-corrected transport scheme that may improve
> > > our Salt and
> > > Heat budgets, particularly beneath the surface layer.
> > >
> > >   Ok.  That's all for now.
> > >
> > >                                                         -Chris
> > > --
> > > ---------------------------------------------------------------------
> > > Christopher Edwards                     christopher.edwards at uconn.edu
> > > Department of Marine Sciences           phone: (860) 405-9173
> > > University of Connecticut               fax: (860) 405-9153
> > > 1084 Shennecossett Road
> > > Groton, CT  06340
> > > ---------------------------------------------------------------------
> > >